Arizona Gold & Silver Reports Up To 99% Gold Recovery From Agitation Leach And 84% Gold Recovery From Heap Leach Cyanide Processing Of Bulk Sample From The Philadelphia Project, Arizona
Original announcement by tmx on
- Company
- Arizona Gold & Silver Inc.
- Ticker
- AZS
- Exchange
- TSX
- Region
- Arizona
- Primary commodity
- Gold
- Secondary commodities
- Silver
- Document categories
- Metallurgy
- Extracted
- 2026-09-19 10:37:09 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
Arizona Gold & Silver reported successful metallurgical test results from a bulk sample at the Philadelphia gold-silver project. Agitation leach achieved up to 99% gold recovery, while heap leach using HPGR crushing achieved 84% gold recovery.
Reasoning: Strong metallurgical results from bulk sampling demonstrating high recovery potential for both agitation and heap leach routes, supported by professional oversight.
Positive factors
- High gold recovery (up to 99%) in agitation leach
- Effective heap leach recovery (84%) using HPGR crushing
- Low cyanide and lime consumption
- QA/QC disclosed with QP sign-off
Facts used in scoring: 4
Classification and evidence
High Recoverypositive
Recovery at or above the exceptional band for the commodity and processing route.
Why it applies: Gold recovery of 91-99% in agitation leach is in the exceptional band.
Evidence · text
“Gold recovery of 91-99% was achieved by agitation leach cyanidation”
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: Agitation leach is a mill-based processing route.
Evidence · text
“Gold recovery of 91-99% was achieved by agitation leach cyanidation”
Heap Leach Routeneutral
Processing via heap leach — lower CAPEX and OPEX, lower recovery expected.
Why it applies: Results include heap leach cyanidation testing.
Evidence · text
“Gold recovery of 84% was achieved by heap leach”
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 names a Qualified Person (Gregory Hahn) and an independent commercial lab (KCA/Florin).
Evidence · text
“Qualified Person Gregory Hahn... is a Qualified Person under National Instrument 43-101”
Single Domain Onlynegative
Testing limited to one composite or domain — representativeness not established.
Why it applies: only one composite was tested
Extracted facts
Stored fact records: 4. Some facts used in scoring do not have a stored record.
Metallurgical Results (4)
bottle rollPhiladelphia · goldRecovery: 99 %Head Grade: 1.958Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- Philadelphia
- Commodity
- gold
- Region
- usa_az
- Reported Region
- Arizona
- Ticker
- AZS
Test Work
- Program Status
- preliminary
- Test Type
- bottle roll
- Processing Route
- agitation leach cyanidation
- Sample
- bulk sample from fresh bench cut
- Grind P80
- 110 µm
Recovery
- Recovery
- 99 %
- Recovery Basis
- actual_test
- Head Grade
- 1.958
- Head Grade Unit
- g/t
Reagents
- Cyanide
- 0.145 kg/t
- Lime
- 0.5 kg/t
Lab
- Laboratory
- Kappes, Cassidy & Associates (KCA)
- Consultant
- Process Engineering LLC
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-30T00:00:00.000Z
Reasoning: High recovery on a representative bulk sample.
Positive factors
- Exceptional gold recovery
Evidence · text
“Gold recovery of 91-99% was achieved by agitation leach cyanidation”
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the mill_cil signal
High Recoverypositive
Recovery at or above the exceptional band for the commodity and processing route.
Why it applies: 99% is at or above the exceptional band (95%)
bottle rollPhiladelphia · silverRecovery: 72 %Head Grade: 3.08Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- Philadelphia
- Commodity
- silver
- Region
- usa_az
- Reported Region
- Arizona
- Ticker
- AZS
Test Work
- Program Status
- preliminary
- Test Type
- bottle roll
- Processing Route
- agitation leach cyanidation
- Sample
- bulk sample from fresh bench cut
Recovery
- Recovery
- 72 %
- Recovery Basis
- actual_test
- Head Grade
- 3.08
- Head Grade Unit
- g/t
Lab
- Laboratory
- Kappes, Cassidy & Associates (KCA)
- Consultant
- Process Engineering LLC
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-30T00:00:00.000Z
Reasoning: Silver recovery is moderate but consistent with gold results.
Positive factors
- Solid silver recovery
Evidence · text
“Silver recovery of 49-72% was achieved by agitation leach cyanidation”
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the mill_cil signal
Low Recoverynegative
Recovery below the weak band for the commodity and processing route.
Why it applies: 72% is below the weak band (75%)
column leachPhiladelphia · goldRecovery: 84 %Head Grade: 1.958Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- Philadelphia
- Commodity
- gold
- Region
- usa_az
- Reported Region
- Arizona
- Ticker
- AZS
Test Work
- Program Status
- preliminary
- Test Type
- column leach
- Processing Route
- heap leach cyanidation
- Sample
- bulk material crushed to -6.3mm using HPGR
Recovery
- Recovery
- 84 %
- Recovery Basis
- actual_test
- Head Grade
- 1.958
- Head Grade Unit
- g/t
Reagents
- Cyanide
- 2.27 kg/t
- Lime
- 1 kg/t
Lab
- Laboratory
- Kappes, Cassidy & Associates (KCA)
- Consultant
- Process Engineering LLC
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-30T00:00:00.000Z
Reasoning: Strong heap leach performance demonstrated via HPGR crushing.
Positive factors
- Effective heap leach recovery using HPGR
Negative factors
- Higher reagent consumption in column tests
Evidence · text
“Gold recovery of 84% was achieved by heap leach on bulk material crushed to -6.3mm using HPGR”
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: 84% is at or above the exceptional band (75%)
column leachPhiladelphia · silverRecovery: 37 %Head Grade: 1.958Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- Philadelphia
- Commodity
- silver
- Region
- usa_az
- Reported Region
- Arizona
- Ticker
- AZS
Test Work
- Program Status
- preliminary
- Test Type
- column leach
- Processing Route
- heap leach cyanidation
- Sample
- bulk material crushed to -6.3mm using HPGR
Recovery
- Recovery
- 37 %
- Recovery Basis
- actual_test
- Head Grade
- 1.958
- Head Grade Unit
- g/t
Lab
- Laboratory
- Kappes, Cassidy & Associates (KCA)
- Consultant
- Process Engineering LLC
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-30T00:00:00.000Z
Reasoning: Silver recovery in heap leach is significantly lower than gold.
Negative factors
- Lower silver recovery in heap leach
Evidence · text
“silver recoveries from bulk material under heap leach was 37%”
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
Low Recoverynegative
Recovery below the weak band for the commodity and processing route.
Why it applies: 37% is below the weak band (75%)
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.