NEVGOLD ANNOUNCES MINERAL RESOURCE: ANTIMONY OF 29,600 TONNES MEASURED & INDICATED (0.26%) AND 48,100 TONNES INFERRED (0.18%); 100% OXIDE GOLD OF 181,400 OZS MEASURED & INDICATED AND 1,203,500 OZS INFERRED; STRATEGIC U.S. ANTIMONY RESOURCE

Original announcement by globenewswire on

Company
NevGold Corp.
Ticker
NAU
Exchange
Unavailable
Region
Nevada
Primary commodity
Gold
Secondary commodities
Antimony, Silver
Document categories
Resource update
Extracted
2026-08-20 20:37:49 UTC

Analysis by Minestarters Atlas

Minestarters Atlas analysis

Summary

NevGold Corp. announced a maiden gold-antimony Mineral Resource Estimate for its Limo Butte Project in Nevada, defining a large-scale, 100% oxide gold resource of 181,400 oz Measured & Indicated and 1,203,500 oz Inferred, alongside a strategic antimony resource of 29,600 tonnes Measured & Indicated and 48,100 tonnes Inferred. The NI 43-101 compliant estimate highlights the project's dual-commodity optionality and potential for near-term antimony production from already mined material. The company plans a 20,000-meter drill program in 2026 to expand the resource and advance economic studies.

Reasoning: The announcement presents a significant maiden Mineral Resource Estimate for the Limo Butte Project, establishing a large, dual-commodity gold-antimony resource in a strategic US location with potential for near-term production. The estimate is robust, compliant with NI 43-101, and supported by transparent assumptions and QA/QC.

Positive factors

  • Maiden MRE
  • Large scale resource
  • Dual-commodity optionality
  • Strategic critical mineral (antimony)
  • Potential for near-term antimony production
  • 100% oxide gold
  • NI 43-101 compliant
  • QP signed
  • Good QA/QC disclosure
  • Cut-off grade disclosed
  • Heap leach amenable

Negative factors

  • High inferred component (expected for maiden MRE)
  • No mine scheduling studies completed yet

Low confidence — this extraction should be reviewed alongside the original source.

Facts used in scoring: 79

Classification and evidence

Maiden Resourceneutral

First formal MRE for the project — establishes baseline but typically exploration-stage with high Inferred component.

Why it applies: The announcement explicitly states it is a 'maiden gold-antimony Mineral Resource Estimate'.

Evidence · text

“maiden gold-antimony Mineral Resource Estimate”

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: The mineral resource estimate was prepared in accordance with Canadian Institute of Mining, Metallurgy and Petroleum definitions, as required under National Instrument 43-101.

Evidence · text

“All mineral resources have been estimated in accordance with Canadian Institute of Mining, Metallurgy and Petroleum definitions, as required under National Instrument 43-101 (“ NI 43-101 ”).”

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: Mr. Greg Mosher, P. Geo, Principal of GMRS, is stated as an independent 'Qualified Person' under NI 43-101 and is responsible for the MRE.

Evidence · text

“Mr. Greg Mosher (P.Geo., M.Sc. Applied), Principal of GMRS is an independent “Qualified Person” under NI 43-101 and is responsible for the MRE.”

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: The document reports a significant portion of the resource in the Inferred category, such as '1,203,500 OZS INFERRED' for gold.

Evidence · text

“1,203,500 OZS INFERRED”

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: The document explicitly states the cut-off grade used for the base case as '0.30 g/t AuEq.'.

Evidence · text

“reported at a cut-off grade of 0.30 g/t AuEq.”

QA/QC Disclosedpositive · Story-specific tag

Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).

Why it applies: The release mentions that 'NevGold QA/QC protocols are followed on the Project and include insertion of duplicate, blank and standard samples in all drill holes'.

Evidence · text

“NevGold QA/QC protocols are followed on the Project and include insertion of duplicate, blank and standard samples in all drill holes.”

Lab Certifiedpositive · Story-specific tag

No canonical definition is currently available.

Why it applies: The assay lab, American Assay Labs, Reno, is specified as ISO 17025 certified.

Evidence · text

“ISO 17025 certified American Assay Labs, Reno”

Strategic Mineralpositive · Story-specific tag

No canonical definition is currently available.

Why it applies: The title and body of the document emphasize 'STRATEGIC U.S. ANTIMONY RESOURCE' and its role in building a domestic supply chain.

Evidence · text

“STRATEGIC U.S. ANTIMONY RESOURCE”

Oxide Orepositive · Story-specific tag

No canonical definition is currently available.

Why it applies: The resource is described as '100% OXIDE GOLD'.

Evidence · text

“100% OXIDE GOLD”

Heap Leach Amenablepositive · Story-specific tag

No canonical definition is currently available.

Why it applies: The document refers to a 'Heap-Leach Gold MRE' and assumes 'heap-leach process recovery of 80% for gold'.

Evidence · text

“Heap-Leach Gold MRE”

Extracted facts

Stored fact records: 79. Some facts used in scoring do not have a stored record.

Resource Estimates (79)

measuredLimo Butte Project · goldTonnes: 1000000Grade: 0.31Grade Unit: g/tContained Metal: 9500Contained Unit: ozView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
gold
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
measured
Tonnes
1000000
Grade
0.31
Grade Unit
g/t
Contained Metal
9500
Contained Unit
oz
Cutoff Grade
0.3

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is a measured resource for gold from the Leach Pads, part of the maiden MRE, indicating high confidence and good grade for an open-pit oxide deposit.

Positive factors

  • Maiden MRE
  • Measured Resource
  • 100% oxide gold
  • Cut-off grade disclosed

Evidence · table

“0.31”

Context: 1.0

measuredLimo Butte Project · silverTonnes: 1000000Grade: 2.8Grade Unit: g/tContained Metal: 87000Contained Unit: ozView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
silver
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
measured
Tonnes
1000000
Grade
2.8
Grade Unit
g/t
Contained Metal
87000
Contained Unit
oz
Cutoff Grade
0.3

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is a measured resource for silver from the Leach Pads, part of the maiden MRE, providing byproduct potential.

Positive factors

  • Maiden MRE
  • Measured Resource
  • Cut-off grade disclosed

Evidence · table

“2.80”

Context: 1.0

measuredLimo Butte Project · antimonyTonnes: 1000000Grade: 0.26Grade Unit: %Contained Metal: 2600Contained Unit: tView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
antimony
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
measured
Tonnes
1000000
Grade
0.26
Grade Unit
%
Contained Metal
2600
Contained Unit
t
Cutoff Grade
0.3

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is a measured resource for antimony from the Leach Pads, part of the maiden MRE, contributing to the strategic critical mineral component.

Positive factors

  • Maiden MRE
  • Measured Resource
  • Strategic critical mineral
  • Cut-off grade disclosed

Evidence · table

“0.26%”

Context: 1.0

indicatedLimo Butte Project · goldTonnes: 1200000Grade: 0.29Grade Unit: g/tContained Metal: 11600Contained Unit: ozView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
gold
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
indicated
Tonnes
1200000
Grade
0.29
Grade Unit
g/t
Contained Metal
11600
Contained Unit
oz
Cutoff Grade
0.3

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is an indicated resource for gold from the Leach Pads, part of the maiden MRE, showing good confidence for an open-pit oxide deposit.

Positive factors

  • Maiden MRE
  • Indicated Resource
  • 100% oxide gold
  • Cut-off grade disclosed

Evidence · table

“0.29”

Context: 1.2

indicatedLimo Butte Project · silverTonnes: 1200000Grade: 2.43Grade Unit: g/tContained Metal: 96700Contained Unit: ozView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
silver
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
indicated
Tonnes
1200000
Grade
2.43
Grade Unit
g/t
Contained Metal
96700
Contained Unit
oz
Cutoff Grade
0.3

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is an indicated resource for silver from the Leach Pads, part of the maiden MRE, providing byproduct potential.

Positive factors

  • Maiden MRE
  • Indicated Resource
  • Cut-off grade disclosed

Evidence · table

“2.43”

Context: 1.2

indicatedLimo Butte Project · antimonyTonnes: 1200000Grade: 0.3Grade Unit: %Contained Metal: 3700Contained Unit: tView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
antimony
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
indicated
Tonnes
1200000
Grade
0.3
Grade Unit
%
Contained Metal
3700
Contained Unit
t
Cutoff Grade
0.3

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is an indicated resource for antimony from the Leach Pads, part of the maiden MRE, contributing to the strategic critical mineral component.

Positive factors

  • Maiden MRE
  • Indicated Resource
  • Strategic critical mineral
  • Cut-off grade disclosed

Evidence · table

“0.30%”

Context: 1.2

indicatedLimo Butte Project · goldTonnes: 90000Grade: 0.3Grade Unit: g/tContained Metal: 900Contained Unit: ozView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
gold
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
indicated
Tonnes
90000
Grade
0.3
Grade Unit
g/t
Contained Metal
900
Contained Unit
oz
Cutoff Grade
0.3

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is an indicated resource for gold from the Pre-Strip Dump, part of the maiden MRE, showing good confidence for an open-pit oxide deposit.

Positive factors

  • Maiden MRE
  • Indicated Resource
  • 100% oxide gold
  • Cut-off grade disclosed

Evidence · table

“0.30”

Context: 0.09

indicatedLimo Butte Project · silverTonnes: 90000Grade: 0.13Grade Unit: g/tContained Metal: 400Contained Unit: ozView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
silver
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
indicated
Tonnes
90000
Grade
0.13
Grade Unit
g/t
Contained Metal
400
Contained Unit
oz
Cutoff Grade
0.3

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is an indicated resource for silver from the Pre-Strip Dump, part of the maiden MRE, providing byproduct potential.

Positive factors

  • Maiden MRE
  • Indicated Resource
  • Cut-off grade disclosed

Evidence · table

“0.13”

Context: 0.09

indicatedLimo Butte Project · antimonyTonnes: 90000Grade: 0.65Grade Unit: %Contained Metal: 600Contained Unit: tView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
antimony
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
indicated
Tonnes
90000
Grade
0.65
Grade Unit
%
Contained Metal
600
Contained Unit
t
Cutoff Grade
0.3

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is an indicated resource for antimony from the Pre-Strip Dump, part of the maiden MRE, contributing to the strategic critical mineral component.

Positive factors

  • Maiden MRE
  • Indicated Resource
  • Strategic critical mineral
  • Cut-off grade disclosed

Evidence · table

“0.65%”

Context: 0.09

indicatedLimo Butte Project · goldTonnes: 12900000Grade: 0.38Grade Unit: g/tContained Metal: 159400Contained Unit: ozView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
gold
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
indicated
Tonnes
12900000
Grade
0.38
Grade Unit
g/t
Contained Metal
159400
Contained Unit
oz
Cutoff Grade
0.3

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is a significant indicated resource for gold from the Resurrection zone, part of the maiden MRE, showing good confidence for an open-pit oxide deposit.

Positive factors

  • Maiden MRE
  • Indicated Resource
  • 100% oxide gold
  • Cut-off grade disclosed

Evidence · table

“0.38”

Context: 12.9

indicatedLimo Butte Project · silverTonnes: 12900000Grade: 0.91Grade Unit: g/tContained Metal: 378100Contained Unit: ozView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
silver
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
indicated
Tonnes
12900000
Grade
0.91
Grade Unit
g/t
Contained Metal
378100
Contained Unit
oz
Cutoff Grade
0.3

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is an indicated resource for silver from the Resurrection zone, part of the maiden MRE, providing byproduct potential.

Positive factors

  • Maiden MRE
  • Indicated Resource
  • Cut-off grade disclosed

Evidence · table

“0.91”

Context: 12.9

indicatedLimo Butte Project · antimonyTonnes: 12900000Grade: 0.19Grade Unit: %Contained Metal: 24900Contained Unit: tView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
antimony
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
indicated
Tonnes
12900000
Grade
0.19
Grade Unit
%
Contained Metal
24900
Contained Unit
t
Cutoff Grade
0.3

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is a significant indicated resource for antimony from the Resurrection zone, part of the maiden MRE, contributing to the strategic critical mineral component.

Positive factors

  • Maiden MRE
  • Indicated Resource
  • Strategic critical mineral
  • Cut-off grade disclosed

Evidence · table

“0.19%”

Context: 12.9

indicatedLimo Butte Project · goldTonnes: 15200000Grade: 0.37Grade Unit: g/tContained Metal: 181400Contained Unit: ozView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
gold
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
indicated
Tonnes
15200000
Grade
0.37
Grade Unit
g/t
Contained Metal
181400
Contained Unit
oz
Cutoff Grade
0.3

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This represents the total Measured and Indicated gold resource, a significant component of the maiden MRE, demonstrating high confidence and scale.

Positive factors

  • Maiden MRE
  • Indicated Resource
  • Large scale resource
  • 100% oxide gold
  • Cut-off grade disclosed

Evidence · table

“0.37”

Context: 15.2

indicatedLimo Butte Project · silverTonnes: 15200000Grade: 1.15Grade Unit: g/tContained Metal: 562200Contained Unit: ozView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
silver
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
indicated
Tonnes
15200000
Grade
1.15
Grade Unit
g/t
Contained Metal
562200
Contained Unit
oz
Cutoff Grade
0.3

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This represents the total Measured and Indicated silver resource, a significant byproduct component of the maiden MRE.

Positive factors

  • Maiden MRE
  • Indicated Resource
  • Cut-off grade disclosed

Evidence · table

“1.15”

Context: 15.2

indicatedLimo Butte Project · antimonyTonnes: 15200000Grade: 0.21Grade Unit: %Contained Metal: 31800Contained Unit: tView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
antimony
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
indicated
Tonnes
15200000
Grade
0.21
Grade Unit
%
Contained Metal
31800
Contained Unit
t
Cutoff Grade
0.3

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This represents the total Measured and Indicated antimony resource, a significant and strategic component of the maiden MRE.

Positive factors

  • Maiden MRE
  • Indicated Resource
  • Strategic critical mineral
  • Cut-off grade disclosed

Evidence · table

“0.21%”

Context: 15.2

inferredLimo Butte Project · goldTonnes: 50000Grade: 0.28Grade Unit: g/tContained Metal: 400Contained Unit: ozView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
gold
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
inferred
Tonnes
50000
Grade
0.28
Grade Unit
g/t
Contained Metal
400
Contained Unit
oz
Cutoff Grade
0.3

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is an inferred resource for gold from the Pre-Strip Dump, part of the maiden MRE, with lower confidence due to its inferred category.

Positive factors

  • Maiden MRE
  • 100% oxide gold
  • Cut-off grade disclosed

Negative factors

  • Inferred Resource

Evidence · table

“0.28”

Context: 0.05

inferredLimo Butte Project · silverTonnes: 50000Grade: 0.03Grade Unit: g/tContained Metal: 40Contained Unit: ozView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
silver
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
inferred
Tonnes
50000
Grade
0.03
Grade Unit
g/t
Contained Metal
40
Contained Unit
oz
Cutoff Grade
0.3

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is an inferred resource for silver from the Pre-Strip Dump, part of the maiden MRE, with lower confidence and low grade.

Positive factors

  • Maiden MRE
  • Cut-off grade disclosed

Negative factors

  • Inferred Resource

Evidence · table

“0.03”

Context: 0.05

inferredLimo Butte Project · antimonyTonnes: 50000Grade: 0.99Grade Unit: %Contained Metal: 500Contained Unit: tView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
antimony
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
inferred
Tonnes
50000
Grade
0.99
Grade Unit
%
Contained Metal
500
Contained Unit
t
Cutoff Grade
0.3

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is an inferred resource for antimony from the Pre-Strip Dump, part of the maiden MRE, contributing to the strategic critical mineral component with good grade.

Positive factors

  • Maiden MRE
  • Strategic critical mineral
  • Cut-off grade disclosed

Negative factors

  • Inferred Resource

Evidence · table

“0.99%”

Context: 0.05

inferredLimo Butte Project · goldTonnes: 28500000Grade: 0.29Grade Unit: g/tContained Metal: 261600Contained Unit: ozView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
gold
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
inferred
Tonnes
28500000
Grade
0.29
Grade Unit
g/t
Contained Metal
261600
Contained Unit
oz
Cutoff Grade
0.3

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is a significant inferred resource for gold from the Resurrection zone, part of the maiden MRE, with lower confidence due to its inferred category.

Positive factors

  • Maiden MRE
  • 100% oxide gold
  • Cut-off grade disclosed

Negative factors

  • Inferred Resource

Evidence · table

“0.29”

Context: 28.5

inferredLimo Butte Project · silverTonnes: 28500000Grade: 0.87Grade Unit: g/tContained Metal: 799100Contained Unit: ozView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
silver
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
inferred
Tonnes
28500000
Grade
0.87
Grade Unit
g/t
Contained Metal
799100
Contained Unit
oz
Cutoff Grade
0.3

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is an inferred resource for silver from the Resurrection zone, part of the maiden MRE, providing byproduct potential with lower confidence.

Positive factors

  • Maiden MRE
  • Cut-off grade disclosed

Negative factors

  • Inferred Resource

Evidence · table

“0.87”

Context: 28.5

inferredLimo Butte Project · antimonyTonnes: 28500000Grade: 0.12Grade Unit: %Contained Metal: 34600Contained Unit: tView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
antimony
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
inferred
Tonnes
28500000
Grade
0.12
Grade Unit
%
Contained Metal
34600
Contained Unit
t
Cutoff Grade
0.3

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is a significant inferred resource for antimony from the Resurrection zone, part of the maiden MRE, contributing to the strategic critical mineral component with lower confidence.

Positive factors

  • Maiden MRE
  • Strategic critical mineral
  • Cut-off grade disclosed

Negative factors

  • Inferred Resource

Evidence · table

“0.12%”

Context: 28.5

inferredLimo Butte Project · goldTonnes: 57200000Grade: 0.37Grade Unit: g/tContained Metal: 686500Contained Unit: ozView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
gold
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
inferred
Tonnes
57200000
Grade
0.37
Grade Unit
g/t
Contained Metal
686500
Contained Unit
oz
Cutoff Grade
0.3

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is a large inferred resource for gold from the Cadillac Valley zone, part of the maiden MRE, with lower confidence due to its inferred category.

Positive factors

  • Maiden MRE
  • Large scale resource
  • 100% oxide gold
  • Cut-off grade disclosed

Negative factors

  • Inferred Resource

Evidence · table

“0.37”

Context: 57.2

inferredLimo Butte Project · silverTonnes: 57200000Grade: 0.49Grade Unit: g/tContained Metal: 895700Contained Unit: ozView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
silver
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
inferred
Tonnes
57200000
Grade
0.49
Grade Unit
g/t
Contained Metal
895700
Contained Unit
oz
Cutoff Grade
0.3

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is an inferred resource for silver from the Cadillac Valley zone, part of the maiden MRE, providing byproduct potential with lower confidence.

Positive factors

  • Maiden MRE
  • Cut-off grade disclosed

Negative factors

  • Inferred Resource

Evidence · table

“0.49”

Context: 57.2

inferredLimo Butte Project · antimonyTonnes: 57200000Grade: 0.07Grade Unit: %Contained Metal: 40600Contained Unit: tView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
antimony
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
inferred
Tonnes
57200000
Grade
0.07
Grade Unit
%
Contained Metal
40600
Contained Unit
t
Cutoff Grade
0.3

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is a significant inferred resource for antimony from the Cadillac Valley zone, part of the maiden MRE, contributing to the strategic critical mineral component with lower confidence.

Positive factors

  • Maiden MRE
  • Strategic critical mineral
  • Cut-off grade disclosed

Negative factors

  • Inferred Resource

Evidence · table

“0.07%”

Context: 57.2

inferredLimo Butte Project · goldTonnes: 31700000Grade: 0.25Grade Unit: g/tContained Metal: 255000Contained Unit: ozView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
gold
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
inferred
Tonnes
31700000
Grade
0.25
Grade Unit
g/t
Contained Metal
255000
Contained Unit
oz
Cutoff Grade
0.15

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is a significant inferred resource for gold from the Northern Zones, part of the maiden MRE, with lower confidence due to its inferred category and lack of antimony data.

Positive factors

  • Maiden MRE
  • 100% oxide gold
  • Cut-off grade disclosed

Negative factors

  • Inferred Resource
  • No antimony data

Evidence · table

“0.25”

Context: 31.7

inferredLimo Butte Project · goldTonnes: 117500000Grade: 0.32Grade Unit: g/tContained Metal: 1203500Contained Unit: ozView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
gold
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
inferred
Tonnes
117500000
Grade
0.32
Grade Unit
g/t
Contained Metal
1203500
Contained Unit
oz
Cutoff Grade
0.3

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This represents the total Inferred gold resource, a very large component of the maiden MRE, indicating significant exploration potential but with lower confidence.

Positive factors

  • Maiden MRE
  • Large scale resource
  • 100% oxide gold
  • Cut-off grade disclosed

Negative factors

  • Inferred Resource

Evidence · table

“0.32”

Context: 117.5

inferredLimo Butte Project · silverTonnes: 117500000Grade: 0.61Grade Unit: g/tContained Metal: 1694840Contained Unit: ozView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
silver
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
inferred
Tonnes
117500000
Grade
0.61
Grade Unit
g/t
Contained Metal
1694840
Contained Unit
oz
Cutoff Grade
0.3

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This represents the total Inferred silver resource, a significant byproduct component of the maiden MRE, with lower confidence.

Positive factors

  • Maiden MRE
  • Cut-off grade disclosed

Negative factors

  • Inferred Resource

Evidence · table

“0.61”

Context: 117.5

inferredLimo Butte Project · antimonyTonnes: 117500000Grade: 0.09Grade Unit: %Contained Metal: 75700Contained Unit: tView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
antimony
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
inferred
Tonnes
117500000
Grade
0.09
Grade Unit
%
Contained Metal
75700
Contained Unit
t
Cutoff Grade
0.3

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This represents the total Inferred antimony resource, a significant and strategic component of the maiden MRE, with lower confidence.

Positive factors

  • Maiden MRE
  • Strategic critical mineral
  • Cut-off grade disclosed

Negative factors

  • Inferred Resource

Evidence · table

“0.09%”

Context: 117.5

measuredLimo Butte Project · goldTonnes: 1000000Grade: 0.31Grade Unit: g/tContained Metal: 9500Contained Unit: ozView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
gold
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
measured
Tonnes
1000000
Grade
0.31
Grade Unit
g/t
Contained Metal
9500
Contained Unit
oz
Cutoff Grade
0.1

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is a measured resource for gold from the Leach Pads antimony subdomain, part of the maiden MRE, indicating high confidence and good grade for an open-pit oxide deposit.

Positive factors

  • Maiden MRE
  • Measured Resource
  • 100% oxide gold
  • Cut-off grade disclosed

Evidence · table

“0.31”

Context: 1.0

measuredLimo Butte Project · silverTonnes: 1000000Grade: 2.8Grade Unit: g/tContained Metal: 87000Contained Unit: ozView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
silver
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
measured
Tonnes
1000000
Grade
2.8
Grade Unit
g/t
Contained Metal
87000
Contained Unit
oz
Cutoff Grade
0.1

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is a measured resource for silver from the Leach Pads antimony subdomain, part of the maiden MRE, providing byproduct potential.

Positive factors

  • Maiden MRE
  • Measured Resource
  • Cut-off grade disclosed

Evidence · table

“2.80”

Context: 1.0

measuredLimo Butte Project · antimonyTonnes: 1000000Grade: 0.26Grade Unit: %Contained Metal: 2600Contained Unit: tView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
antimony
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
measured
Tonnes
1000000
Grade
0.26
Grade Unit
%
Contained Metal
2600
Contained Unit
t
Cutoff Grade
0.1

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is a measured resource for antimony from the Leach Pads antimony subdomain, part of the maiden MRE, contributing to the strategic critical mineral component.

Positive factors

  • Maiden MRE
  • Measured Resource
  • Strategic critical mineral
  • Cut-off grade disclosed

Evidence · table

“0.26%”

Context: 1.0

indicatedLimo Butte Project · goldTonnes: 1200000Grade: 0.29Grade Unit: g/tContained Metal: 11600Contained Unit: ozView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
gold
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
indicated
Tonnes
1200000
Grade
0.29
Grade Unit
g/t
Contained Metal
11600
Contained Unit
oz
Cutoff Grade
0.1

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is an indicated resource for gold from the Leach Pads antimony subdomain, part of the maiden MRE, showing good confidence for an open-pit oxide deposit.

Positive factors

  • Maiden MRE
  • Indicated Resource
  • 100% oxide gold
  • Cut-off grade disclosed

Evidence · table

“0.29”

Context: 1.2

indicatedLimo Butte Project · silverTonnes: 1200000Grade: 2.44Grade Unit: g/tContained Metal: 96700Contained Unit: ozView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
silver
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
indicated
Tonnes
1200000
Grade
2.44
Grade Unit
g/t
Contained Metal
96700
Contained Unit
oz
Cutoff Grade
0.1

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is an indicated resource for silver from the Leach Pads antimony subdomain, part of the maiden MRE, providing byproduct potential.

Positive factors

  • Maiden MRE
  • Indicated Resource
  • Cut-off grade disclosed

Evidence · table

“2.44”

Context: 1.2

indicatedLimo Butte Project · antimonyTonnes: 1200000Grade: 0.3Grade Unit: %Contained Metal: 3700Contained Unit: tView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
antimony
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
indicated
Tonnes
1200000
Grade
0.3
Grade Unit
%
Contained Metal
3700
Contained Unit
t
Cutoff Grade
0.1

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is an indicated resource for antimony from the Leach Pads antimony subdomain, part of the maiden MRE, contributing to the strategic critical mineral component.

Positive factors

  • Maiden MRE
  • Indicated Resource
  • Strategic critical mineral
  • Cut-off grade disclosed

Evidence · table

“0.30%”

Context: 1.2

indicatedLimo Butte Project · goldTonnes: 90000Grade: 0.3Grade Unit: g/tContained Metal: 900Contained Unit: ozView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
gold
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
indicated
Tonnes
90000
Grade
0.3
Grade Unit
g/t
Contained Metal
900
Contained Unit
oz
Cutoff Grade
0.1

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is an indicated resource for gold from the Pre-Strip Dump antimony subdomain, part of the maiden MRE, showing good confidence for an open-pit oxide deposit.

Positive factors

  • Maiden MRE
  • Indicated Resource
  • 100% oxide gold
  • Cut-off grade disclosed

Evidence · table

“0.30”

Context: 0.09

indicatedLimo Butte Project · silverTonnes: 90000Grade: 0.13Grade Unit: g/tContained Metal: 400Contained Unit: ozView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
silver
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
indicated
Tonnes
90000
Grade
0.13
Grade Unit
g/t
Contained Metal
400
Contained Unit
oz
Cutoff Grade
0.1

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is an indicated resource for silver from the Pre-Strip Dump antimony subdomain, part of the maiden MRE, providing byproduct potential.

Positive factors

  • Maiden MRE
  • Indicated Resource
  • Cut-off grade disclosed

Evidence · table

“0.13”

Context: 0.09

indicatedLimo Butte Project · antimonyTonnes: 90000Grade: 0.65Grade Unit: %Contained Metal: 600Contained Unit: tView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
antimony
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
indicated
Tonnes
90000
Grade
0.65
Grade Unit
%
Contained Metal
600
Contained Unit
t
Cutoff Grade
0.1

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is an indicated resource for antimony from the Pre-Strip Dump antimony subdomain, part of the maiden MRE, contributing to the strategic critical mineral component.

Positive factors

  • Maiden MRE
  • Indicated Resource
  • Strategic critical mineral
  • Cut-off grade disclosed

Evidence · table

“0.65%”

Context: 0.09

indicatedLimo Butte Project · goldTonnes: 9100000Grade: 0.37Grade Unit: g/tContained Metal: 107500Contained Unit: ozView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
gold
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
indicated
Tonnes
9100000
Grade
0.37
Grade Unit
g/t
Contained Metal
107500
Contained Unit
oz
Cutoff Grade
0.1

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is a significant indicated resource for gold from the Resurrection antimony subdomain, part of the maiden MRE, showing good confidence for an open-pit oxide deposit.

Positive factors

  • Maiden MRE
  • Indicated Resource
  • 100% oxide gold
  • Cut-off grade disclosed

Evidence · table

“0.37”

Context: 9.1

indicatedLimo Butte Project · silverTonnes: 9100000Grade: 0.97Grade Unit: g/tContained Metal: 283500Contained Unit: ozView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
silver
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
indicated
Tonnes
9100000
Grade
0.97
Grade Unit
g/t
Contained Metal
283500
Contained Unit
oz
Cutoff Grade
0.1

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is an indicated resource for silver from the Resurrection antimony subdomain, part of the maiden MRE, providing byproduct potential.

Positive factors

  • Maiden MRE
  • Indicated Resource
  • Cut-off grade disclosed

Evidence · table

“0.97”

Context: 9.1

indicatedLimo Butte Project · antimonyTonnes: 9100000Grade: 0.25Grade Unit: %Contained Metal: 22700Contained Unit: tView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
antimony
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
indicated
Tonnes
9100000
Grade
0.25
Grade Unit
%
Contained Metal
22700
Contained Unit
t
Cutoff Grade
0.1

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is a significant indicated resource for antimony from the Resurrection antimony subdomain, part of the maiden MRE, contributing to the strategic critical mineral component.

Positive factors

  • Maiden MRE
  • Indicated Resource
  • Strategic critical mineral
  • Cut-off grade disclosed

Evidence · table

“0.25%”

Context: 9.1

indicatedLimo Butte Project · goldTonnes: 11300000Grade: 0.36Grade Unit: g/tContained Metal: 129500Contained Unit: ozView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
gold
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
indicated
Tonnes
11300000
Grade
0.36
Grade Unit
g/t
Contained Metal
129500
Contained Unit
oz
Cutoff Grade
0.1

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This represents the total Measured and Indicated gold resource for the antimony subdomain, a significant component of the maiden MRE, demonstrating high confidence and scale.

Positive factors

  • Maiden MRE
  • Indicated Resource
  • Large scale resource
  • 100% oxide gold
  • Cut-off grade disclosed

Evidence · table

“0.36”

Context: 11.3

indicatedLimo Butte Project · silverTonnes: 11300000Grade: 1.28Grade Unit: g/tContained Metal: 467600Contained Unit: ozView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
silver
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
indicated
Tonnes
11300000
Grade
1.28
Grade Unit
g/t
Contained Metal
467600
Contained Unit
oz
Cutoff Grade
0.1

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This represents the total Measured and Indicated silver resource for the antimony subdomain, a significant byproduct component of the maiden MRE.

Positive factors

  • Maiden MRE
  • Indicated Resource
  • Cut-off grade disclosed

Evidence · table

“1.28”

Context: 11.3

indicatedLimo Butte Project · antimonyTonnes: 11300000Grade: 0.26Grade Unit: %Contained Metal: 29600Contained Unit: tView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
antimony
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
indicated
Tonnes
11300000
Grade
0.26
Grade Unit
%
Contained Metal
29600
Contained Unit
t
Cutoff Grade
0.1

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This represents the total Measured and Indicated antimony resource for the antimony subdomain, a significant and strategic component of the maiden MRE.

Positive factors

  • Maiden MRE
  • Indicated Resource
  • Strategic critical mineral
  • Cut-off grade disclosed

Evidence · table

“0.26%”

Context: 11.3

inferredLimo Butte Project · goldTonnes: 40000Grade: 0.28Grade Unit: g/tContained Metal: 400Contained Unit: ozView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
gold
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
inferred
Tonnes
40000
Grade
0.28
Grade Unit
g/t
Contained Metal
400
Contained Unit
oz
Cutoff Grade
0.1

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is an inferred resource for gold from the Pre-Strip Dump antimony subdomain, part of the maiden MRE, with lower confidence due to its inferred category.

Positive factors

  • Maiden MRE
  • 100% oxide gold
  • Cut-off grade disclosed

Negative factors

  • Inferred Resource

Evidence · table

“0.28”

Context: 0.04

inferredLimo Butte Project · silverTonnes: 40000Grade: 0.03Grade Unit: g/tContained Metal: 40Contained Unit: ozView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
silver
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
inferred
Tonnes
40000
Grade
0.03
Grade Unit
g/t
Contained Metal
40
Contained Unit
oz
Cutoff Grade
0.1

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is an inferred resource for silver from the Pre-Strip Dump antimony subdomain, part of the maiden MRE, with lower confidence and low grade.

Positive factors

  • Maiden MRE
  • Cut-off grade disclosed

Negative factors

  • Inferred Resource

Evidence · table

“0.03”

Context: 0.04

inferredLimo Butte Project · antimonyTonnes: 40000Grade: 1.02Grade Unit: %Contained Metal: 500Contained Unit: tView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
antimony
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
inferred
Tonnes
40000
Grade
1.02
Grade Unit
%
Contained Metal
500
Contained Unit
t
Cutoff Grade
0.1

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is an inferred resource for antimony from the Pre-Strip Dump antimony subdomain, part of the maiden MRE, contributing to the strategic critical mineral component with good grade.

Positive factors

  • Maiden MRE
  • Strategic critical mineral
  • Cut-off grade disclosed

Negative factors

  • Inferred Resource

Evidence · table

“1.02%”

Context: 0.04

inferredLimo Butte Project · goldTonnes: 14100000Grade: 0.19Grade Unit: g/tContained Metal: 87300Contained Unit: ozView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
gold
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
inferred
Tonnes
14100000
Grade
0.19
Grade Unit
g/t
Contained Metal
87300
Contained Unit
oz
Cutoff Grade
0.1

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is an inferred resource for gold from the Resurrection antimony subdomain, part of the maiden MRE, with lower confidence due to its inferred category.

Positive factors

  • Maiden MRE
  • 100% oxide gold
  • Cut-off grade disclosed

Negative factors

  • Inferred Resource

Evidence · table

“0.19”

Context: 14.1

inferredLimo Butte Project · silverTonnes: 14100000Grade: 0.61Grade Unit: g/tContained Metal: 275700Contained Unit: ozView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
silver
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
inferred
Tonnes
14100000
Grade
0.61
Grade Unit
g/t
Contained Metal
275700
Contained Unit
oz
Cutoff Grade
0.1

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is an inferred resource for silver from the Resurrection antimony subdomain, part of the maiden MRE, providing byproduct potential with lower confidence.

Positive factors

  • Maiden MRE
  • Cut-off grade disclosed

Negative factors

  • Inferred Resource

Evidence · table

“0.61”

Context: 14.1

inferredLimo Butte Project · antimonyTonnes: 14100000Grade: 0.2Grade Unit: %Contained Metal: 27600Contained Unit: tView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
antimony
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
inferred
Tonnes
14100000
Grade
0.2
Grade Unit
%
Contained Metal
27600
Contained Unit
t
Cutoff Grade
0.1

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is an inferred resource for antimony from the Resurrection antimony subdomain, part of the maiden MRE, contributing to the strategic critical mineral component with lower confidence.

Positive factors

  • Maiden MRE
  • Strategic critical mineral
  • Cut-off grade disclosed

Negative factors

  • Inferred Resource

Evidence · table

“0.20%”

Context: 14.1

inferredLimo Butte Project · goldTonnes: 12700000Grade: 0.26Grade Unit: g/tContained Metal: 108400Contained Unit: ozView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
gold
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
inferred
Tonnes
12700000
Grade
0.26
Grade Unit
g/t
Contained Metal
108400
Contained Unit
oz
Cutoff Grade
0.1

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is an inferred resource for gold from the Cadillac Valley antimony subdomain, part of the maiden MRE, with lower confidence due to its inferred category.

Positive factors

  • Maiden MRE
  • 100% oxide gold
  • Cut-off grade disclosed

Negative factors

  • Inferred Resource

Evidence · table

“0.26”

Context: 12.7

inferredLimo Butte Project · silverTonnes: 12700000Grade: 0.53Grade Unit: g/tContained Metal: 218100Contained Unit: ozView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
silver
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
inferred
Tonnes
12700000
Grade
0.53
Grade Unit
g/t
Contained Metal
218100
Contained Unit
oz
Cutoff Grade
0.1

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is an inferred resource for silver from the Cadillac Valley antimony subdomain, part of the maiden MRE, providing byproduct potential with lower confidence.

Positive factors

  • Maiden MRE
  • Cut-off grade disclosed

Negative factors

  • Inferred Resource

Evidence · table

“0.53”

Context: 12.7

inferredLimo Butte Project · antimonyTonnes: 12700000Grade: 0.16Grade Unit: %Contained Metal: 20000Contained Unit: tView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
antimony
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
inferred
Tonnes
12700000
Grade
0.16
Grade Unit
%
Contained Metal
20000
Contained Unit
t
Cutoff Grade
0.1

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is an inferred resource for antimony from the Cadillac Valley antimony subdomain, part of the maiden MRE, contributing to the strategic critical mineral component with lower confidence.

Positive factors

  • Maiden MRE
  • Strategic critical mineral
  • Cut-off grade disclosed

Negative factors

  • Inferred Resource

Evidence · table

“0.16%”

Context: 12.7

inferredLimo Butte Project · goldTonnes: 26900000Grade: 0.23Grade Unit: g/tContained Metal: 196100Contained Unit: ozView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
gold
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
inferred
Tonnes
26900000
Grade
0.23
Grade Unit
g/t
Contained Metal
196100
Contained Unit
oz
Cutoff Grade
0.1

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This represents the total Inferred gold resource for the antimony subdomain, a significant component of the maiden MRE, indicating significant exploration potential but with lower confidence.

Positive factors

  • Maiden MRE
  • Large scale resource
  • 100% oxide gold
  • Cut-off grade disclosed

Negative factors

  • Inferred Resource

Evidence · table

“0.23”

Context: 26.9

inferredLimo Butte Project · silverTonnes: 26900000Grade: 0.57Grade Unit: g/tContained Metal: 493840Contained Unit: ozView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
silver
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
inferred
Tonnes
26900000
Grade
0.57
Grade Unit
g/t
Contained Metal
493840
Contained Unit
oz
Cutoff Grade
0.1

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This represents the total Inferred silver resource for the antimony subdomain, a significant byproduct component of the maiden MRE, with lower confidence.

Positive factors

  • Maiden MRE
  • Cut-off grade disclosed

Negative factors

  • Inferred Resource

Evidence · table

“0.57”

Context: 26.9

inferredLimo Butte Project · antimonyTonnes: 26900000Grade: 0.18Grade Unit: %Contained Metal: 48100Contained Unit: tView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
antimony
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
inferred
Tonnes
26900000
Grade
0.18
Grade Unit
%
Contained Metal
48100
Contained Unit
t
Cutoff Grade
0.1

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This represents the total Inferred antimony resource for the antimony subdomain, a significant and strategic component of the maiden MRE, with lower confidence.

Positive factors

  • Maiden MRE
  • Strategic critical mineral
  • Cut-off grade disclosed

Negative factors

  • Inferred Resource

Evidence · table

“0.18%”

Context: 26.9

indicatedLimo Butte Project · goldTonnes: 8900000Grade: 0.51Grade Unit: g/tContained Metal: 144200Contained Unit: ozView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
gold
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
indicated
Tonnes
8900000
Grade
0.51
Grade Unit
g/t
Contained Metal
144200
Contained Unit
oz
Cutoff Grade
0.6

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is a higher-grade indicated gold resource at a 0.60 g/t AuEq cut-off, part of the maiden MRE, demonstrating good confidence and improved grade.

Positive factors

  • Maiden MRE
  • Indicated Resource
  • Higher grade
  • 100% oxide gold
  • Cut-off grade disclosed

Evidence · table

“0.51”

Context: 8.9

indicatedLimo Butte Project · silverTonnes: 8900000Grade: 1.41Grade Unit: g/tContained Metal: 400000Contained Unit: ozView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
silver
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
indicated
Tonnes
8900000
Grade
1.41
Grade Unit
g/t
Contained Metal
400000
Contained Unit
oz
Cutoff Grade
0.6

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is an indicated silver resource at a 0.60 g/t AuEq cut-off, part of the maiden MRE, providing byproduct potential.

Positive factors

  • Maiden MRE
  • Indicated Resource
  • Cut-off grade disclosed

Evidence · table

“1.41”

Context: 8.9

indicatedLimo Butte Project · antimonyTonnes: 8900000Grade: 0.28Grade Unit: %Contained Metal: 25100Contained Unit: tView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
antimony
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
indicated
Tonnes
8900000
Grade
0.28
Grade Unit
%
Contained Metal
25100
Contained Unit
t
Cutoff Grade
0.6

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is an indicated antimony resource at a 0.60 g/t AuEq cut-off, part of the maiden MRE, contributing to the strategic critical mineral component with improved grade.

Positive factors

  • Maiden MRE
  • Indicated Resource
  • Strategic critical mineral
  • Cut-off grade disclosed

Evidence · table

“0.28%”

Context: 8.9

inferredLimo Butte Project · goldTonnes: 51800000Grade: 0.41Grade Unit: g/tContained Metal: 690700Contained Unit: ozView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
gold
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
inferred
Tonnes
51800000
Grade
0.41
Grade Unit
g/t
Contained Metal
690700
Contained Unit
oz
Cutoff Grade
0.6

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is a large, higher-grade inferred gold resource at a 0.60 g/t AuEq cut-off, part of the maiden MRE, indicating significant exploration potential with improved grade but lower confidence.

Positive factors

  • Maiden MRE
  • Large scale resource
  • Higher grade
  • 100% oxide gold
  • Cut-off grade disclosed

Negative factors

  • Inferred Resource

Evidence · table

“0.41”

Context: 51.8

inferredLimo Butte Project · silverTonnes: 51800000Grade: 1.08Grade Unit: g/tContained Metal: 700220Contained Unit: ozView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
silver
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
inferred
Tonnes
51800000
Grade
1.08
Grade Unit
g/t
Contained Metal
700220
Contained Unit
oz
Cutoff Grade
0.6

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is an inferred silver resource at a 0.60 g/t AuEq cut-off, part of the maiden MRE, providing byproduct potential with lower confidence.

Positive factors

  • Maiden MRE
  • Cut-off grade disclosed

Negative factors

  • Inferred Resource

Evidence · table

“1.08”

Context: 51.8

inferredLimo Butte Project · antimonyTonnes: 51800000Grade: 0.14Grade Unit: %Contained Metal: 28600Contained Unit: tView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
antimony
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
inferred
Tonnes
51800000
Grade
0.14
Grade Unit
%
Contained Metal
28600
Contained Unit
t
Cutoff Grade
0.6

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is an inferred antimony resource at a 0.60 g/t AuEq cut-off, part of the maiden MRE, contributing to the strategic critical mineral component with lower confidence.

Positive factors

  • Maiden MRE
  • Strategic critical mineral
  • Cut-off grade disclosed

Negative factors

  • Inferred Resource

Evidence · table

“0.14%”

Context: 51.8

indicatedLimo Butte Project · goldTonnes: 11300000Grade: 0.44Grade Unit: g/tContained Metal: 160600Contained Unit: ozView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
gold
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
indicated
Tonnes
11300000
Grade
0.44
Grade Unit
g/t
Contained Metal
160600
Contained Unit
oz
Cutoff Grade
0.45

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is a higher-grade indicated gold resource at a 0.45 g/t AuEq cut-off, part of the maiden MRE, demonstrating good confidence and improved grade.

Positive factors

  • Maiden MRE
  • Indicated Resource
  • Higher grade
  • 100% oxide gold
  • Cut-off grade disclosed

Evidence · table

“0.44”

Context: 11.3

indicatedLimo Butte Project · silverTonnes: 11300000Grade: 1.28Grade Unit: g/tContained Metal: 463100Contained Unit: ozView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
silver
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
indicated
Tonnes
11300000
Grade
1.28
Grade Unit
g/t
Contained Metal
463100
Contained Unit
oz
Cutoff Grade
0.45

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is an indicated silver resource at a 0.45 g/t AuEq cut-off, part of the maiden MRE, providing byproduct potential.

Positive factors

  • Maiden MRE
  • Indicated Resource
  • Cut-off grade disclosed

Evidence · table

“1.28”

Context: 11.3

indicatedLimo Butte Project · antimonyTonnes: 11300000Grade: 0.25Grade Unit: %Contained Metal: 28400Contained Unit: tView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
antimony
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
indicated
Tonnes
11300000
Grade
0.25
Grade Unit
%
Contained Metal
28400
Contained Unit
t
Cutoff Grade
0.45

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is an indicated antimony resource at a 0.45 g/t AuEq cut-off, part of the maiden MRE, contributing to the strategic critical mineral component with improved grade.

Positive factors

  • Maiden MRE
  • Indicated Resource
  • Strategic critical mineral
  • Cut-off grade disclosed

Evidence · table

“0.25%”

Context: 11.3

inferredLimo Butte Project · goldTonnes: 70300000Grade: 0.38Grade Unit: g/tContained Metal: 868000Contained Unit: ozView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
gold
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
inferred
Tonnes
70300000
Grade
0.38
Grade Unit
g/t
Contained Metal
868000
Contained Unit
oz
Cutoff Grade
0.45

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is a large, higher-grade inferred gold resource at a 0.45 g/t AuEq cut-off, part of the maiden MRE, indicating significant exploration potential with improved grade but lower confidence.

Positive factors

  • Maiden MRE
  • Large scale resource
  • Higher grade
  • 100% oxide gold
  • Cut-off grade disclosed

Negative factors

  • Inferred Resource

Evidence · table

“0.38”

Context: 70.3

inferredLimo Butte Project · silverTonnes: 70300000Grade: 0.83Grade Unit: g/tContained Metal: 1036340Contained Unit: ozView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
silver
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
inferred
Tonnes
70300000
Grade
0.83
Grade Unit
g/t
Contained Metal
1036340
Contained Unit
oz
Cutoff Grade
0.45

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is an inferred silver resource at a 0.45 g/t AuEq cut-off, part of the maiden MRE, providing byproduct potential with lower confidence.

Positive factors

  • Maiden MRE
  • Cut-off grade disclosed

Negative factors

  • Inferred Resource

Evidence · table

“0.83”

Context: 70.3

inferredLimo Butte Project · antimonyTonnes: 70300000Grade: 0.12Grade Unit: %Contained Metal: 46000Contained Unit: tView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
antimony
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
inferred
Tonnes
70300000
Grade
0.12
Grade Unit
%
Contained Metal
46000
Contained Unit
t
Cutoff Grade
0.45

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is an inferred antimony resource at a 0.45 g/t AuEq cut-off, part of the maiden MRE, contributing to the strategic critical mineral component with lower confidence.

Positive factors

  • Maiden MRE
  • Strategic critical mineral
  • Cut-off grade disclosed

Negative factors

  • Inferred Resource

Evidence · table

“0.12%”

Context: 70.3

indicatedLimo Butte Project · goldTonnes: 15200000Grade: 0.37Grade Unit: g/tContained Metal: 181400Contained Unit: ozView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
gold
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
indicated
Tonnes
15200000
Grade
0.37
Grade Unit
g/t
Contained Metal
181400
Contained Unit
oz
Cutoff Grade
0.3

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is a significant indicated gold resource at a 0.30 g/t AuEq cut-off, part of the maiden MRE, demonstrating high confidence and scale.

Positive factors

  • Maiden MRE
  • Indicated Resource
  • Large scale resource
  • 100% oxide gold
  • Cut-off grade disclosed

Evidence · table

“0.37”

Context: 15.2

indicatedLimo Butte Project · silverTonnes: 15200000Grade: 1.15Grade Unit: g/tContained Metal: 562200Contained Unit: ozView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
silver
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
indicated
Tonnes
15200000
Grade
1.15
Grade Unit
g/t
Contained Metal
562200
Contained Unit
oz
Cutoff Grade
0.3

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is an indicated silver resource at a 0.30 g/t AuEq cut-off, part of the maiden MRE, providing byproduct potential.

Positive factors

  • Maiden MRE
  • Indicated Resource
  • Cut-off grade disclosed

Evidence · table

“1.15”

Context: 15.2

indicatedLimo Butte Project · antimonyTonnes: 15200000Grade: 0.21Grade Unit: %Contained Metal: 31800Contained Unit: tView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
antimony
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
indicated
Tonnes
15200000
Grade
0.21
Grade Unit
%
Contained Metal
31800
Contained Unit
t
Cutoff Grade
0.3

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is an indicated antimony resource at a 0.30 g/t AuEq cut-off, part of the maiden MRE, contributing to the strategic critical mineral component.

Positive factors

  • Maiden MRE
  • Indicated Resource
  • Strategic critical mineral
  • Cut-off grade disclosed

Evidence · table

“0.21%”

Context: 15.2

inferredLimo Butte Project · goldTonnes: 117500000Grade: 0.32Grade Unit: g/tContained Metal: 1203500Contained Unit: ozView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
gold
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
inferred
Tonnes
117500000
Grade
0.32
Grade Unit
g/t
Contained Metal
1203500
Contained Unit
oz
Cutoff Grade
0.3

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is a very large inferred gold resource at a 0.30 g/t AuEq cut-off, part of the maiden MRE, indicating significant exploration potential but with lower confidence.

Positive factors

  • Maiden MRE
  • Large scale resource
  • 100% oxide gold
  • Cut-off grade disclosed

Negative factors

  • Inferred Resource

Evidence · table

“0.32”

Context: 117.5

inferredLimo Butte Project · silverTonnes: 117500000Grade: 0.61Grade Unit: g/tContained Metal: 1694840Contained Unit: ozView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
silver
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
inferred
Tonnes
117500000
Grade
0.61
Grade Unit
g/t
Contained Metal
1694840
Contained Unit
oz
Cutoff Grade
0.3

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is an inferred silver resource at a 0.30 g/t AuEq cut-off, part of the maiden MRE, providing byproduct potential with lower confidence.

Positive factors

  • Maiden MRE
  • Cut-off grade disclosed

Negative factors

  • Inferred Resource

Evidence · table

“0.61”

Context: 117.5

inferredLimo Butte Project · antimonyTonnes: 117500000Grade: 0.09Grade Unit: %Contained Metal: 75700Contained Unit: tView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
antimony
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
inferred
Tonnes
117500000
Grade
0.09
Grade Unit
%
Contained Metal
75700
Contained Unit
t
Cutoff Grade
0.3

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is an inferred antimony resource at a 0.30 g/t AuEq cut-off, part of the maiden MRE, contributing to the strategic critical mineral component with lower confidence.

Positive factors

  • Maiden MRE
  • Strategic critical mineral
  • Cut-off grade disclosed

Negative factors

  • Inferred Resource

Evidence · table

“0.09%”

Context: 117.5

indicatedLimo Butte Project · goldTonnes: 23100000Grade: 0.28Grade Unit: g/tContained Metal: 204900Contained Unit: ozView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
gold
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
indicated
Tonnes
23100000
Grade
0.28
Grade Unit
g/t
Contained Metal
204900
Contained Unit
oz
Cutoff Grade
0.15

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is a large indicated gold resource at a 0.15 g/t AuEq cut-off, part of the maiden MRE, demonstrating high confidence and increased tonnage at a lower cut-off.

Positive factors

  • Maiden MRE
  • Indicated Resource
  • Large scale resource
  • 100% oxide gold
  • Cut-off grade disclosed

Evidence · table

“0.28”

Context: 23.1

indicatedLimo Butte Project · silverTonnes: 23100000Grade: 0.98Grade Unit: g/tContained Metal: 729300Contained Unit: ozView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
silver
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
indicated
Tonnes
23100000
Grade
0.98
Grade Unit
g/t
Contained Metal
729300
Contained Unit
oz
Cutoff Grade
0.15

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is an indicated silver resource at a 0.15 g/t AuEq cut-off, part of the maiden MRE, providing byproduct potential.

Positive factors

  • Maiden MRE
  • Indicated Resource
  • Cut-off grade disclosed

Evidence · table

“0.98”

Context: 23.1

indicatedLimo Butte Project · antimonyTonnes: 23100000Grade: 0.16Grade Unit: %Contained Metal: 36100Contained Unit: tView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
antimony
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
indicated
Tonnes
23100000
Grade
0.16
Grade Unit
%
Contained Metal
36100
Contained Unit
t
Cutoff Grade
0.15

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is an indicated antimony resource at a 0.15 g/t AuEq cut-off, part of the maiden MRE, contributing to the strategic critical mineral component.

Positive factors

  • Maiden MRE
  • Indicated Resource
  • Strategic critical mineral
  • Cut-off grade disclosed

Evidence · table

“0.16%”

Context: 23.1

inferredLimo Butte Project · goldTonnes: 221900000Grade: 0.23Grade Unit: g/tContained Metal: 1628900Contained Unit: ozView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
gold
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
inferred
Tonnes
221900000
Grade
0.23
Grade Unit
g/t
Contained Metal
1628900
Contained Unit
oz
Cutoff Grade
0.15

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is a very large inferred gold resource at a 0.15 g/t AuEq cut-off, part of the maiden MRE, indicating significant exploration potential but with lower confidence.

Positive factors

  • Maiden MRE
  • Very large scale resource
  • 100% oxide gold
  • Cut-off grade disclosed

Negative factors

  • Inferred Resource

Evidence · table

“0.23”

Context: 221.9

inferredLimo Butte Project · silverTonnes: 221900000Grade: 0.49Grade Unit: g/tContained Metal: 2997940Contained Unit: ozView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
silver
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
inferred
Tonnes
221900000
Grade
0.49
Grade Unit
g/t
Contained Metal
2997940
Contained Unit
oz
Cutoff Grade
0.15

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is an inferred silver resource at a 0.15 g/t AuEq cut-off, part of the maiden MRE, providing byproduct potential with lower confidence.

Positive factors

  • Maiden MRE
  • Cut-off grade disclosed

Negative factors

  • Inferred Resource

Evidence · table

“0.49”

Context: 221.9

inferredLimo Butte Project · antimonyTonnes: 221900000Grade: 0.06Grade Unit: %Contained Metal: 114000Contained Unit: tView all details
Link to this fact

Identity

Project
Limo Butte Project
Commodity
antimony
Region
usa_nv
Reported Region
Nevada
Ticker
NAU

Resource Data

Category
inferred
Tonnes
221900000
Grade
0.06
Grade Unit
%
Contained Metal
114000
Contained Unit
t
Cutoff Grade
0.15

Location

Loc. Confidence
inferred

Review

Needs Review
No
Historical
No

Dates

Event date
2026-07-15T00:00:00.000Z

Reasoning: This is an inferred antimony resource at a 0.15 g/t AuEq cut-off, part of the maiden MRE, contributing to the strategic critical mineral component with lower confidence.

Positive factors

  • Maiden MRE
  • Strategic critical mineral
  • Cut-off grade disclosed

Negative factors

  • Inferred Resource

Evidence · table

“0.06%”

Context: 221.9

How Atlas produces this analysis

Minestarters Atlas uses automated extraction to summarize mining announcements, identify reported measurements, and classify supporting evidence. Sentiment reflects the extracted narrative and classification rules; it is an interpretation, not a reported measurement. Evidence quotes and context are provided where available. Missing data, low-confidence results, and review flags indicate limitations. Check the original publisher announcement before relying on an interpretation.