# Metallic Minerals Reports Successful Electrochemical Recovery of 99.9% Pure Copper Metal from La Plata Sulphide Mineralization Canonical Atlas analysis: https://atlas-extractions.minestarters.com/news/metallic-minerals-reports-successful-electrochemical-recovery-of-99-9-pure-coppe--b14699af-6777-47a0-96a4-57ba1ed1ec29 Original source: https://money.tmx.com/en/quote/MMG/news/8070358922787622/metallic-minerals-reports-successful-electrochemical-recovery-of-99-9-pure-coppe Publisher: tmx Original announcement: 2026-02-26T12:00:00.000Z Analysis by Minestarters Atlas Atlas analysis published: Unknown date Atlas analysis updated: Unknown date - Company: Metallic Minerals Corp. - Ticker: MMG - Exchange: TSX - Region: Colorado - Primary commodity: Copper - Secondary commodities: Silver, Gold, Platinum - Document categories: Metallurgy - Extracted: 2026-09-16 10:51:54 UTC Narrative sentiment: 0.60 · Bullish ## Minestarters Atlas summary Metallic Minerals Corp. has demonstrated a proof-of-concept electrochemical oxidative leaching process that recovers 99.9% pure copper from La Plata sulphide material at ambient temperatures. The process achieves approximately 70% copper recovery and naturally partitions silver, gold, PGEs, and REEs into a solid residue for potential secondary recovery. Reasoning: The release reports successful laboratory-scale proof-of-concept for a novel electrochemical leaching process that selectively recovers high-purity copper while partitioning other valuable metals into a residue. - Positive factor: Successful proof-of-concept for direct electrochemical recovery - Positive factor: High purity \(99.9%\) copper produced - Positive factor: Natural metal partitioning allows for secondary recovery of Ag, Au, PGEs, and REEs - Positive factor: Ambient temperature process avoids high-energy roasting or pressure oxidation - Negative factor: Laboratory-scale results only - Negative factor: Copper recovery \(70%\) is relatively low for a commercial process - Negative factor: Scalability and economic viability are unproven Facts used in scoring: 1 ## Classification and evidence **Bench Scale Only** Polarity: negative Definition: Only preliminary bench tests completed — no locked-cycle or pilot work. Why it applies: The results are described as initial laboratory-scale proof-of-concept testing. Evidence · text > These results demonstrate, for the first time on La Plata mineralized samples, that direct electrochemical oxidative leaching can effectively dissolve copper **Mill Route** Polarity: neutral Definition: Processing via mill or concentrator \(CIL, CIP, tank leach, flotation\). Why it applies: The process involves leaching followed by electrodeposition, which is a chemical/electrochemical processing route. Evidence · text > streamlined two-stage process-leaching followed by electrodeposition **QP/CP Signed** Polarity: positive Story-specific tag Definition: 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: The metallurgical testing disclosure was reviewed and approved by Scott Petsel, a Qualified Person \(P. Geo\). Evidence · text > reviewed and approved by Scott Petsel, M.S., CPG, P. Geo., President, Metallic Minerals Corp., who is a Qualified Person **POX/BIOX Route** Polarity: neutral Definition: Pressure or bio-oxidation for refractory ore — high CAPEX and OPEX. Why it applies: the document describes a pox\_biox route \("pressure oxidation"\) **Single Domain Only** Polarity: negative Definition: Testing limited to one composite or domain — representativeness not established. Why it applies: only one composite was tested ## Extracted facts Stored fact records: 1. Some facts used in scoring do not have a stored record. ## Metallurgical Results (1) ### electrochemical oxidative leaching [Link to this fact](https://atlas-extractions.minestarters.com/news/metallic-minerals-reports-successful-electrochemical-recovery-of-99-9-pure-coppe--b14699af-6777-47a0-96a4-57ba1ed1ec29#fact-metallurgical-facts-0) La Plata · copper #### Identity - Project: La Plata - Commodity: copper - Region: usa\_co - Reported Region: Colorado - Ticker: MMG #### Test Work - Program Status: scoping - Test Type: electrochemical oxidative leaching - Processing Route: ambient-temperature electrochemical oxidative leaching - Sample: whole La Plata chalcopyrite-dominant sulphide material from drill samples #### Recovery - Recovery: 70 % - Recovery Basis: actual\_test - Conc. Grade: 99.9 - Conc. Grade Unit: % #### Lab - Consultant: Columbia University's Gadikota Research Group #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-26T00:00:00.000Z Reasoning: Achieved 70% recovery of copper into a 99.9% pure metallic form via a novel ambient-temperature process. - Positive factor: High purity 99.9% metal achieved - Positive factor: Ambient temperature operation - Negative factor: 70% recovery is relatively low - Negative factor: Laboratory scale only Evidence · text > approximately 70% of the copper contained in sulphide from drill samples was selectively solubilized #### Tags used in scoring **Low Recovery** Polarity: negative Definition: Recovery below the weak band for the commodity and processing route. Why it applies: 70% is below the weak 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.