82.6% Copper Recovery Backs Fitzroy's Heap Leach Plan for Buen Retiro
Original announcement by cruxinvestor on
- Company
- Fitzroy Minerals
- Ticker
- FTZ
- Exchange
- Unavailable
- Region
- Chile
- Primary commodity
- Copper
- Secondary commodities
- Gold, Silver
- Document categories
- Metallurgy
- Extracted
- 2026-09-24 17:04:25 UTC
Analysis by Minestarters Atlas
Atlas analysis published:
Minestarters Atlas analysis
Summary
Fitzroy Minerals reported successful mini-column metallurgical tests at the Buen Retiro copper project in Chile, with copper recoveries reaching up to 82.6% for mixed material after 21 days. Preliminary 1-meter column tests are trending even higher, supporting the company's heap leach development plan.
Reasoning: Strong preliminary metallurgical results for heap leach processing of three ore types, supporting the project's development path.
Positive factors
- High copper recoveries in mini-column tests (up to 82.6%)
- Low acid consumption reported
- Soft material indicated by low Bond Work Index
- Chloride addition improves recoveries
- Preliminary 1-meter column results trending higher
Negative factors
- 1-meter column metallurgical balance not yet closed
- Industrial recovery requires scaling factor reduction (0.8-0.9)
Facts used in scoring: 6
Classification and evidence
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: The testing is focused on heap leaching, which is a specific processing route.
Evidence · text
“establish how the deposit responds to heap leaching”
High Recoverypositive
Recovery at or above the exceptional band for the commodity and processing route.
Why it applies: Copper recoveries of up to 82.6% in mini-columns and trending 95% in columns are strong for heap leach.
Evidence · text
“82.6% Copper Recovery Backs Fitzroy's Heap Leach Plan”
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: 6. Some facts used in scoring do not have a stored record.
Metallurgical Results (6)
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
- Sample
- high-grade oxide mini-column
- Leach Time
- 504 hours
Recovery
- Recovery
- 71.8 %
- Recovery Basis
- actual_test
- Head Grade
- 0.95
- Head Grade Unit
- %
Reagents
- Acid
- 4.9 kg/t
Lab
- Laboratory
- SGS Laboratories
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-23T00:00:00.000Z
Reasoning: Solid recovery for high-grade oxide in mini-column testing.
Positive factors
- 71.8% recovery at 21 days
Evidence · text
“total copper recoveries reached 71.8% for high-grade oxide”
Tags used in scoring
Low Recoverynegative
Recovery below the weak band for the commodity and processing route.
Why it applies: 71.8% is below the weak band (80%)
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
- Sample
- low-grade oxide mini-column
- Leach Time
- 504 hours
Recovery
- Recovery
- 59.9 %
- Recovery Basis
- actual_test
- Head Grade
- 0.35
- Head Grade Unit
- %
Reagents
- Acid
- 11.2 kg/t
Lab
- Laboratory
- SGS Laboratories
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-23T00:00:00.000Z
Reasoning: Lower recovery and higher acid consumption compared to other ore types.
Negative factors
- Higher acid consumption (11.2 kg/kg Cu)
- Lower recovery (59.9%)
Evidence · text
“59.9% for low-grade oxide”
Tags used in scoring
Low Recoverynegative
Recovery below the weak band for the commodity and processing route.
Why it applies: 59.9% is below the weak band (80%)
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
- Sample
- mixed material mini-column
- Leach Time
- 504 hours
Recovery
- Recovery
- 82.6 %
- Recovery Basis
- actual_test
- Head Grade
- 1.24
- Head Grade Unit
- %
Reagents
- Acid
- 3.4 kg/t
Lab
- Laboratory
- SGS Laboratories
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-23T00:00:00.000Z
Reasoning: Excellent recovery and low acid consumption for mixed material.
Positive factors
- High recovery of 82.6%
- Low acid consumption of 3.4 kg/kg Cu
Evidence · text
“82.6% for mixed material after 21 days of leaching”
columnBuen Retiro · copperRecovery: 85 %View all detailsHide details
Identity
- Project
- Buen Retiro
- Commodity
- copper
- Region
- chile
- Reported Region
- Chile
- Ticker
- FTZ
Test Work
- Program Status
- preliminary
- Test Type
- column
- Sample
- high-grade oxide 1-meter column
Recovery
- Recovery
- 85 %
- Recovery Basis
- actual_test
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-23T00:00:00.000Z
Reasoning: Preliminary column results show positive trends.
Positive factors
- Trending toward 85% recovery
Negative factors
- Preliminary results, metallurgical balance not yet closed
Evidence · text
“trending toward preliminary recoveries of ... 85% for high-grade oxide”
columnBuen Retiro · copperRecovery: 74 %View all detailsHide details
Identity
- Project
- Buen Retiro
- Commodity
- copper
- Region
- chile
- Reported Region
- Chile
- Ticker
- FTZ
Test Work
- Program Status
- preliminary
- Test Type
- column
- Sample
- low-grade oxide 1-meter column
Recovery
- Recovery
- 74 %
- Recovery Basis
- actual_test
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-23T00:00:00.000Z
Reasoning: Preliminary column results show positive trends.
Positive factors
- Trending toward 74% recovery
Negative factors
- Preliminary results, metallurgical balance not yet closed
Evidence · text
“74% for low-grade oxide”
Tags used in scoring
Low Recoverynegative
Recovery below the weak band for the commodity and processing route.
Why it applies: 74% is below the weak band (80%)
columnBuen Retiro · copperRecovery: 95 %View all detailsHide details
Identity
- Project
- Buen Retiro
- Commodity
- copper
- Region
- chile
- Reported Region
- Chile
- Ticker
- FTZ
Test Work
- Program Status
- preliminary
- Test Type
- column
- Sample
- mixed material 1-meter column
Recovery
- Recovery
- 95 %
- Recovery Basis
- actual_test
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-23T00:00:00.000Z
Reasoning: Preliminary column results show very strong trends for mixed material.
Positive factors
- Trending toward 95% recovery
Negative factors
- Preliminary results, metallurgical balance not yet closed
Evidence · text
“approximately 95% for mixed material”
Tags used in scoring
High Recoverypositive
Recovery at or above the exceptional band for the commodity and processing route.
Why it applies: 95% is at or above the exceptional band (92%)
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.