Overview

Mine Type	Open Pit
Stage	Residual leach
Commodities	Gold Silver
Production Start	...
Shapshot	The El Gallo mine was an open pit gold mine and heap leach operation that McEwen Mining operated from September 2012 to June 2018, when it ceased active mining. Residual leaching production and ongoing closure and reclamation activities continued through 2023. McEwen Mining is currently reviewing reprocessing heap leach material at the El Gallo mine (“HLM”) as well as new silver processing operations (“El Gallo Silver”) in the immediate vicinity as part of its Fenix Project.
Related Asset	Fenix Expansion Project

Deposit type

• Breccia pipe / Stockwork
• Vein / narrow vein
• Epithermal

Summary:

Gold mineralization in the El Gallo 1 mine area occurs in six deposits along two distinct structural trends, northwest and northeast. A northwest trending structural zone hosts the Samaniego and San Rafael deposits. San Dimas also is hosted by a northwest-striking structure. The second structural trend is northeast-striking and includes the Sagrado Corazón, Lupita and Central deposits. Along these structural trends the mineralization is located within numerous sub-structures that may be parallel, oblique or even perpendicular to the principal trends. Mineralization among the various deposits of the El Gallo 1 area is generally similar, with the individual structural zones consisting of quartz stockwork, breccia, and local quartz vein mineralization occurring within propylitically altered andesitic volcanic rocks. The Samaniego, San Rafael, Lupita, Sagrado Corazon and Central deposits are characterized by gold accompanied by iron oxide and variable copper; the San Dimas deposit is polymetallic containing gold, silver, copper, lead and zinc.

Mining Methods

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Comminution

Crushers and Mills

Processing

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Production

Operational metrics

Personnel

Mine Management

Source

Job Title	Name	Profile	Ref. Date
.......................	.......................		Apr 25, 2024
.......................	.......................		Apr 25, 2024

Total Workforce	Year
	2017
	2016