Leaching

McEwen Copper: Los Azules – New Assay Results

Retrieved on: 
Friday, May 5, 2023

TORONTO, May 04, 2023 (GLOBE NEWSWIRE) -- McEwen Copper Inc., 52%-owned by McEwen Mining Inc. (NYSE: MUX) (TSX: MUX), today reports the latest assay results from Los Azules, where an ongoing infill drilling program continues to delineate copper mineralization in the core of the deposit. Infill drilling serves several purposes: providing better data density to upgrade confidence in the mineral resources, providing material and data for metallurgical, geotechnical, and hydrological studies, and potentially defining higher grade mineralization by drilling inclined holes across vertical structures (such as breccias).

Key Points: 
  • Below the Enriched zone, the Primary (or Hypogene) zone is formed by ascending copper-rich thermal fluids having a much deeper magmatic origin.
  • The green line indicates the pit floor of the 30-year pit shell from the 2017 NI 43-101 Preliminary Economic Assessment (PEA).
  • In addition, the laboratory performs its own internal QAQC checks, with results made available on certificates for Company review.
  • Link to drill results, locations and lengths of drillhole collars corresponding to January 2023 through April 2023 at Los Azules:

McEwen Copper: Los Azules – New Assay Results

Retrieved on: 
Wednesday, April 5, 2023

TORONTO, April 05, 2023 (GLOBE NEWSWIRE) -- McEwen Copper Inc., 52%-owned by McEwen Mining Inc. (NYSE: MUX) (TSX: MUX), is pleased to report the latest assay results from Los Azules, where an ongoing drilling program continues to deliver consistent infill results. Located in San Juan, Argentina, the Los Azules Project has many features comparable to world-class copper-gold deposits in South America, including a thick blanket of higher-grade Enriched (or Supergene) mineralization.

Key Points: 
  • Below the Enriched zone, the Primary (or Hypogene) zone is formed by ascending copper-rich thermal fluids having a much deeper magmatic origin.
  • The breccia unit is the highest-grade domain modelled at Los Azules.
  • In addition, the laboratory performs its own internal QAQC checks, with results made available on certificates for Company review.
  • Link to geochemical results, locations and lengths of drill-hole collars corresponding to October 2022 through January 2023 at Los Azules:

Tombstone Exploration Corporation Announces Production Has Started at the Bonanza Harquahala Mine

Retrieved on: 
Tuesday, July 13, 2021

First results have been received from production in June that started at the Bonanza Harquahala Mine.

Key Points: 
  • First results have been received from production in June that started at the Bonanza Harquahala Mine.
  • The leaching commenced at the Bonanza Harquahala Mine on June 3, 2021 when pH levels increased to allow for safe sustained leaching.
  • Bonanza will continue to move forward with production with ounce production expected to increase as we perfect the leach process over the upcoming months.
  • Tombstone Exploration Corporation is a gold, silver and copper exploration & mining company based in Phoenix, Arizona.

U3O8 Corp. Reports a Positive Start to Retooling Its Battery Commodities - Uranium Project - the Berlin Deposit

Retrieved on: 
Tuesday, July 13, 2021

Toronto, Ontario--(Newsfile Corp. - July 13, 2021) - U3O8 Corp. (TSXV: UWE.H), ("U3O8" or the "Company") announces a positive start to studies designed to improve the bottom line of the Company's Berlin Project.

Key Points: 
  • Toronto, Ontario--(Newsfile Corp. - July 13, 2021) - U3O8 Corp. (TSXV: UWE.H), ("U3O8" or the "Company") announces a positive start to studies designed to improve the bottom line of the Company's Berlin Project.
  • Modelling shows that the metal- and phosphate-bearing solution that would be generated by leaching the mineralized rock from the Berlin Deposit is amenable to treatment by membrane separation.
  • The initial study on membrane separation of the Berlin PLS indicates the potential to recover a suite of products apt for the critical metals and battery markets.
  • U3O8 Corp. is focused on exploration and development of the Berlin uranium and battery commodities deposit in Colombia.

American Lithium Obtains 82% Lithium Extraction Using Roasting and Water Leaching on TLC Claystones

Retrieved on: 
Tuesday, June 29, 2021

Ongoing process work at Hazen Research Inc. has shown that roasting TLC lithium bearing claystones with sulfate and chloride salts, followed by water leaching, results in 82% of lithium being extracted with a significantly lower impurity load as compared to acid leaching.

Key Points: 
  • Ongoing process work at Hazen Research Inc. has shown that roasting TLC lithium bearing claystones with sulfate and chloride salts, followed by water leaching, results in 82% of lithium being extracted with a significantly lower impurity load as compared to acid leaching.
  • Full roasting / water leaching results will be compared to results for sulfuric acid leaching to ascertain which method is best from an economic and environmental perspective.
  • Dr. Laurence Stefan, COO of American Lithium, states, The early success of roasting demonstrates once again the robust nature of the TLC lithium resource and its processing versatility.
  • American Lithium Provides TLC Process Update:
    The TLC project has previously shown that its Li-rich claystones are amenable to rapid sulfuric acid leaching, with lithium extraction in sulfate solution reaching 92% in 10 minutes, for some of the samples.

Mexus Gold Production At Its Santa Elena Mine Improving

Retrieved on: 
Monday, June 14, 2021

CABORCA, Mexico, June 14, 2021 (GLOBE NEWSWIRE) -- Mexus Gold US (OTCQB: MXSG) (Mexus or the Company) announced that leaching recovery and mineral quality continue to improve at its Santa Elena mine located in Caborca, MX.

Key Points: 
  • CABORCA, Mexico, June 14, 2021 (GLOBE NEWSWIRE) -- Mexus Gold US (OTCQB: MXSG) (Mexus or the Company) announced that leaching recovery and mineral quality continue to improve at its Santa Elena mine located in Caborca, MX.
  • Gold sales will support continuing operations and expansion of the heap leach area as the mineral supply now supports it.
  • Mexus Gold US is an American based mining company with holdings in Mexico.
  • Founded in 2009, Mexus Gold US is committed to protecting the environment, mine safety and employing members of the communities in which it operates.

P2 Gold Initiates Metallurgical Program at Gabbs Project; Phase One Drilling Planned for Third Quarter

Retrieved on: 
Tuesday, June 8, 2021

Prior metallurgical test work at Gabbs focused on the recovery of oxide mineralization by both heap leaching and conventional milling.

Key Points: 
  • Prior metallurgical test work at Gabbs focused on the recovery of oxide mineralization by both heap leaching and conventional milling.
  • Depending on the method, historical metallurgical recoveries were reported to range from 70% to 85% for copper and 85% to 95% for gold.
  • P2s initial metallurgical program is focused on the oxide mineralization as the Inferred Mineral Resource for Gabbs assumes zero recovery of oxide copper mineralization.
  • Ken McNaughton, M.A.Sc., P.Eng., Chief Exploration Officer, P2 Gold, is the QP responsible for the Gabbs Project exploration program.

Sixth Wave Innovations Inc. and Barry Hollinger Gold Mine Ltd Sign LOI for IXOS(R) Mining Technology Testing

Retrieved on: 
Tuesday, May 18, 2021

Historical records from BHGM indicate production of slightly more than 250,000 tonnes of mill feed from which ~80,000 ounces of gold are reported to have been recovered.

Key Points: 
  • Historical records from BHGM indicate production of slightly more than 250,000 tonnes of mill feed from which ~80,000 ounces of gold are reported to have been recovered.
  • It is estimated there are approximately 200,000 tons of tailings on the property which have been indicated to contain up to 16,000 ounces of gold.
  • [1]\nUnder the terms of the LOI, BHGM will send representative ore samples to Sixth Wave for testing and analysis with the primary goal of determining the efficacy of using SIXW molecular imprinted polymer beads (IXOS\xc2\xae\xef\xb8\x8f) on BHGM mine tailings.
  • Sixth Wave will perform a combination of leaching and recovery tests, expected to start in June 2021, baring COVID-19 restrictions.

Americas Gold and Silver Corporation Reports First Quarter 2021 Results and Provides Operational Update

Retrieved on: 
Monday, May 17, 2021

At Relief Canyon, following months of study, we have decided to transition to run-of-mine heap leaching to simplify the flowsheet and improve performance.

Key Points: 
  • At Relief Canyon, following months of study, we have decided to transition to run-of-mine heap leaching to simplify the flowsheet and improve performance.
  • As part of this analysis, the Company identified naturally occurring carbonaceous material within the Relief Canyon pit.
  • Offsetting these challenges was that the definition of the gold mineralized zones through blasthole sampling reconciled reasonably to the block model.
  • Americas Gold and Silver does not give any assurance (1) that Americas Gold and Silver will achieve its expectations, or (2) concerning the result or timing thereof.

Global Mining Equipment Market Report 2021: Historical Data for 2009, 2014, and 2019 and Forecasts to 2024 and 2029 - ResearchAndMarkets.com

Retrieved on: 
Thursday, May 6, 2021

b'Mineral processing and other miscellaneous mining equipment (e.g., beneficiation, in situ leaching, and underwater mining equipment)\n'

Key Points: 

b'Mineral processing and other miscellaneous mining equipment (e.g., beneficiation, in situ leaching, and underwater mining equipment)\n'