Announcement Date: 2023-02-28
Announcement Type: Pre-Feasibility Study
Announcement Code: NI43-101
Company name: Excelsior Mining Corp.
Project name: Gunnison
Location: United States
Commodities: Copper
Highlight: Pre-Feasibility Study result incl. Post Tax NPV (7.5%) of USD $1167M & IRR of 37.5%
Resources: only available to subscribers
CP/QP: only available to subscribers
Announcement summary: M3 Engineering & Technology Corporation (M3) was commissioned by Excelsior Mining Corp. (“Excelsior”) to prepare an updated Prefeasibility Study (PFS) in accordance with the Canadian National Instrument 43-101 (“NI 43-101”) standards for reporting mineral properties, for the Gunnison Copper Project (the “Gunnison Project” or the “Project”) in Cochise County, Arizona, USA. The Project utilizes in-situ recovery (ISR) methods to leach copper from a buried copper oxide deposit and extract the copper by conventional solvent extraction-electrowinning (SX-EW) technology. The ISR process involves injecting leach solutions acidified with sulfuric acid into the oxidized mineralization to get soluble copper into solution. Recovery wells pump the copper-bearing pregnant leach solution (PLS) to the surface for copper recovery by SX-EW into salable copper cathodes.
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