Marifil Reports a Positive Opening NI 43-101 Resource at San Roque
Original announcement by tmx on
- Company
- Marifil Mines Limited
- Ticker
- MFM
- Exchange
- TSX
- Region
- Rio Negro Province, Argentina
- Primary commodity
- Gold
- Secondary commodities
- Zinc, Silver, Indium, Lead
- Document categories
- Resource update
- Extracted
- 2026-08-21 12:57:32 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
Marifil Mines Limited has announced its first NI 43-101 mineral resource estimate for the San Roque property in Argentina. The maiden Inferred resource totals 32.89 million tonnes at 1.42 g/t gold equivalent, featuring significant gold, zinc, silver, indium, and lead content.
Reasoning: The announcement reports a maiden NI 43-101 resource of 32.9 Mt at 1.42 g/t AuEq. While the scale is significant, the entire resource is in the Inferred category and lacks metallurgical validation.
Positive factors
- Maiden resource establishment
- Large polymetallic scale
- Significant indium and silver credits
Negative factors
- 100% Inferred category
- No metallurgical recovery tests completed
- Conceptual pit shells only
Low confidence — this extraction should be reviewed alongside the original source.
Facts used in scoring: 11
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 company announces it has received the first mineral resource estimate for the San Roque property.
Evidence · text
“announces that it has received the first mineral resource estimate”
Inferred Resourcenegative
Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.
Why it applies: The entire resource is classified as Inferred.
Evidence · text
“conceptual open pit constrained Inferred Mineral Resource”
NI 43-101 Compliantpositive
Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.
Why it applies: The resource was prepared in accordance with NI 43-101 standards.
Evidence · text
“prepared in accordance National Instrument 43-101”
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: While cut-offs are mentioned in the text for the summary, the specific compositing rules for the reported intervals are not explicitly detailed in the summary table.
Evidence · text
“The estimated resource Cut-Off grades were derived from the following assumptions”
Extracted facts
Stored fact records: 11. Some facts used in scoring do not have a stored record.
Resource Estimates (11)
inferredgoldTonnes: 32891400Grade: 1.42Grade Unit: g/t AuEqContained Metal: 1499900Contained Unit: oz AuEqView all detailsHide details
Identity
- Commodity
- gold
- Ticker
- MFM
Resource Data
- Category
- inferred
- Tonnes
- 32891400
- Grade
- 1.42
- Grade Unit
- g/t AuEq
- Contained Metal
- 1499900
- Contained Unit
- oz AuEq
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2019-07-22T00:00:00.000Z
Reasoning: Maiden resource estimate for the project.
Positive factors
- Maiden resource
Negative factors
- All Inferred
Evidence · text
“conceptual open pit constrained Inferred Mineral Resource of 32,891,400 tonnes of 1.42 grams per tonne gold equivalent”
inferredgoldTonnes: 7121500Grade: 0.72Grade Unit: g/tView all detailsHide details
Identity
- Commodity
- gold
- Ticker
- MFM
Resource Data
- Category
- inferred
- Tonnes
- 7121500
- Grade
- 0.72
- Grade Unit
- g/t
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2019-07-22T00:00:00.000Z
Reasoning: Oxide component of the maiden resource.
Evidence · table
“0.72”
Context: 7,121,500
inferredsilverTonnes: 7121500Grade: 8.78Grade Unit: g/tView all detailsHide details
Identity
- Commodity
- silver
- Ticker
- MFM
Resource Data
- Category
- inferred
- Tonnes
- 7121500
- Grade
- 8.78
- Grade Unit
- g/t
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2019-07-22T00:00:00.000Z
Reasoning: Silver grade in oxide zone.
Evidence · table
“8.78”
Context: 7,121,500
inferredleadTonnes: 7121500Grade: 0.28Grade Unit: %View all detailsHide details
Identity
- Commodity
- lead
- Ticker
- MFM
Resource Data
- Category
- inferred
- Tonnes
- 7121500
- Grade
- 0.28
- Grade Unit
- %
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2019-07-22T00:00:00.000Z
Reasoning: Lead grade in oxide zone.
Evidence · table
“0.28”
Context: 7,121,500
inferredzincTonnes: 7121500Grade: 0.37Grade Unit: %View all detailsHide details
Identity
- Commodity
- zinc
- Ticker
- MFM
Resource Data
- Category
- inferred
- Tonnes
- 7121500
- Grade
- 0.37
- Grade Unit
- %
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2019-07-22T00:00:00.000Z
Reasoning: Zinc grade in oxide zone.
Evidence · table
“0.37”
Context: 7,121,500
inferredindiumTonnes: 7121500Grade: 7.7Grade Unit: g/tView all detailsHide details
Identity
- Commodity
- indium
- Ticker
- MFM
Resource Data
- Category
- inferred
- Tonnes
- 7121500
- Grade
- 7.7
- Grade Unit
- g/t
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2019-07-22T00:00:00.000Z
Reasoning: Indium grade in oxide zone.
Evidence · table
“7.70”
Context: 7,121,500
inferredgoldTonnes: 25769900Grade: 0.39Grade Unit: g/tView all detailsHide details
Identity
- Commodity
- gold
- Ticker
- MFM
Resource Data
- Category
- inferred
- Tonnes
- 25769900
- Grade
- 0.39
- Grade Unit
- g/t
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2019-07-22T00:00:00.000Z
Reasoning: Sulphide component of the maiden resource.
Evidence · table
“0.39”
Context: 25,769,900
inferredsilverTonnes: 25769900Grade: 12.99Grade Unit: g/tView all detailsHide details
Identity
- Commodity
- silver
- Ticker
- MFM
Resource Data
- Category
- inferred
- Tonnes
- 25769900
- Grade
- 12.99
- Grade Unit
- g/t
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2019-07-22T00:00:00.000Z
Reasoning: Silver grade in sulphide zone.
Evidence · table
“12.99”
Context: 25,769,900
inferredleadTonnes: 25769900Grade: 0.41Grade Unit: %View all detailsHide details
Identity
- Commodity
- lead
- Ticker
- MFM
Resource Data
- Category
- inferred
- Tonnes
- 25769900
- Grade
- 0.41
- Grade Unit
- %
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2019-07-22T00:00:00.000Z
Reasoning: Lead grade in sulphide zone.
Evidence · table
“0.41”
Context: 25,769,900
inferredzincTonnes: 25769900Grade: 0.89Grade Unit: %View all detailsHide details
Identity
- Commodity
- zinc
- Ticker
- MFM
Resource Data
- Category
- inferred
- Tonnes
- 25769900
- Grade
- 0.89
- Grade Unit
- %
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2019-07-22T00:00:00.000Z
Reasoning: Zinc grade in sulphide zone.
Evidence · table
“0.89”
Context: 25,769,900
inferredindiumTonnes: 25769900Grade: 13.06Grade Unit: g/tView all detailsHide details
Identity
- Commodity
- indium
- Ticker
- MFM
Resource Data
- Category
- inferred
- Tonnes
- 25769900
- Grade
- 13.06
- Grade Unit
- g/t
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2019-07-22T00:00:00.000Z
Reasoning: Indium grade in sulphide zone.
Evidence · table
“13.06”
Context: 25,769,900
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.