Fitzroy Minerals Reports Copper Recoveries of up to 82.6% from Mini-Column Testing, with Preliminary Larger-Scale Results Trending Higher, at the Buen Retiro Copper Project, Chile
Original announcement by prospectors_exchange on
- Company
- Fitzroy Minerals Inc.
- Ticker
- FTZ
- Exchange
- Unavailable
- Region
- Chile
- Primary commodity
- Copper
- Secondary commodities
- None reported
- Document categories
- Metallurgy
- Extracted
- 2026-09-23 12:49:43 UTC
Analysis by Minestarters Atlas
Atlas analysis published:
Minestarters Atlas analysis
Summary
Fitzroy Minerals has reported successful initial metallurgical test results for the Buen Retiro Copper Project in Chile, with mini-column copper recoveries reaching up to 82.6%. Preliminary results from larger-scale 1-metre column tests are trending higher, suggesting potential long-term recoveries of up to 95% for mixed material. The project also benefits from favourable rock hardness and low acid consumption in key units.
Reasoning: The metallurgical testwork provides strong technical validation for a heap-leach development plan at Buen Retiro, with recoveries exceeding expectations and trending upwards in larger-scale tests.
Positive factors
- High copper recoveries (up to 82.6%) in mini-column tests
- Preliminary 1-metre column results trending higher
- Low-to-moderate acid consumption
- Favourable rock hardness (soft)
- QA/QC disclosed with SGS laboratory and QP sign-off
Negative factors
- Low-grade oxide unit shows higher specific acid consumption (11.2 kg/kg)
Facts used in scoring: 3
Classification and evidence
High Recoverypositive
Recovery at or above the exceptional band for the commodity and processing route.
Why it applies: Mixed unit achieved 82.6% recovery in 21 days, which is strong for heap leach.
Evidence · text
“total copper (“CuT”) recovery of ... 82.6% (mixed) after 21 days”
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: Release mentions SGS laboratory accreditation to ISO/IEC 17025 and QP sign-off.
Evidence · text
“accredited to ISO/IEC 17025 ... Qualified Person (“QP”) Dr. Scott Jobin-Bevans ... has reviewed and approved”
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: The testing is specifically for a heap-leach development plan.
Evidence · text
“evaluating the response of the Project’s three principal geometallurgical units ... to heap-leach processing”
Heap Leach Routeneutral
Processing via heap leach — lower CAPEX and OPEX, lower recovery expected.
Why it applies: the document describes a heap_leach route ("heap leach")
Multi-Domain Testedpositive
Variability across ore domains (oxide, transition, fresh) has been addressed.
Why it applies: 3 distinct composites were tested
Extracted facts
Stored fact records: 3. Some facts used in scoring do not have a stored record.
Metallurgical Results (3)
mini-columnBuen Retiro · copperRecovery: 71.8 %Head Grade: 0.95Head Grade Unit: %View all detailsHide details
Identity
- Project
- Buen Retiro
- Commodity
- copper
- Region
- chile
- Reported Region
- Chile
- Ticker
- FTZ
Test Work
- Program Status
- preliminary
- Test Type
- mini-column
- Processing Route
- heap leach
- Sample
- high-grade oxide composite
Recovery
- Recovery
- 71.8 %
- Recovery Basis
- actual_test
- Head Grade
- 0.95
- Head Grade Unit
- %
Reagents
- Acid
- 4.9 kg/t
Lab
- Laboratory
- SGS
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-23T00:00:00.000Z
Reasoning: Strong initial recovery for high-grade oxide unit.
Positive factors
- 71.8% recovery in 21 days
- Low acid consumption (4.9 kg/kg)
Evidence · text
“total copper (“CuT”) recovery of 71.8% (high-grade oxide)”
Tags used in scoring
Heap Leach Routeneutral
Processing via heap leach — lower CAPEX and OPEX, lower recovery expected.
Why it applies: processing_route matches the heap_leach signal
mini-columnBuen Retiro · copperRecovery: 59.9 %Head Grade: 0.35Head Grade Unit: %View all detailsHide details
Identity
- Project
- Buen Retiro
- Commodity
- copper
- Region
- chile
- Reported Region
- Chile
- Ticker
- FTZ
Test Work
- Program Status
- preliminary
- Test Type
- mini-column
- Processing Route
- heap leach
- Sample
- low-grade oxide composite
Recovery
- Recovery
- 59.9 %
- Recovery Basis
- actual_test
- Head Grade
- 0.35
- Head Grade Unit
- %
Reagents
- Acid
- 11.2 kg/t
Lab
- Laboratory
- SGS
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-23T00:00:00.000Z
Reasoning: Recovery is lower and acid consumption is higher for the low-grade oxide unit.
Negative factors
- Lower recovery (59.9%)
- Higher acid consumption (11.2 kg/kg)
Evidence · text
“59.9% (low-grade oxide) ... specific acid consumptions of ... 11.2 kg H+/kg Cu”
Tags used in scoring
Heap Leach Routeneutral
Processing via heap leach — lower CAPEX and OPEX, lower recovery expected.
Why it applies: processing_route matches the heap_leach signal
mini-columnBuen Retiro · copperRecovery: 82.6 %Head Grade: 1.24Head Grade Unit: %View all detailsHide details
Identity
- Project
- Buen Retiro
- Commodity
- copper
- Region
- chile
- Reported Region
- Chile
- Ticker
- FTZ
Test Work
- Program Status
- preliminary
- Test Type
- mini-column
- Processing Route
- heap leach
- Sample
- mixed material composite
Recovery
- Recovery
- 82.6 %
- Recovery Basis
- actual_test
- Head Grade
- 1.24
- Head Grade Unit
- %
Reagents
- Acid
- 3.4 kg/t
Lab
- Laboratory
- SGS
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-23T00:00:00.000Z
Reasoning: Excellent recovery and low acid consumption for the mixed unit.
Positive factors
- Highest recovery (82.6%)
- Lowest acid consumption (3.4 kg/kg)
Evidence · text
“82.6% (mixed) after 21 days, with low-to-moderate net acid consumption (3.4 to 11.2 kg/kg)”
Tags used in scoring
Heap Leach Routeneutral
Processing via heap leach — lower CAPEX and OPEX, lower recovery expected.
Why it applies: processing_route matches the heap_leach signal
High Recoverypositive
Recovery at or above the exceptional band for the commodity and processing route.
Why it applies: 82.6% is at or above the exceptional band (80%)
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.