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United States
Coeur Mine (Galena Complex)

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 Location:
2.5 km W from Silverton, Idaho, United States

  Address:
1041 Lake Gulch Road
P.O. Box 440
Wallace
Idaho, United States
83873
Phone  ...  Subscription required
WebsiteWeb
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  • Owners
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Overview

StatusCare and Maintenance
Mine TypeUnderground
Commodities
  • Silver
  • Copper
  • Lead
Mining Method
  • Cut & Fill
Processing
  • Flotation
Coeur mine and Coeur processing plant are currently on care and maintenance since April 2016.


Owners & OPERATOR

Source: p. 36
CompanyInterestOwnership
Americas Gold and Silver Corp. (operator) 60 % Indirect
The Galena Complex is owned 60% by Americas Gold and Silver and 40% by Mr. Eric Sprott (2176423 Ontario Ltd.) as announced in the September 9, 2019 press release regarding the strategic joint venture agreement to recapitalize the mining operations. Americas Gold and Silver owns and operates the Galena Complex through its wholly owned subsidiary, U.S. Silver Idaho Inc.

Deposit Type

  • Vein / narrow vein


Summary:

Silver-lead veins may or may not contain minor amounts of sphalerite. Silver-copper veins can also contain minor chalcopyrite, pyrite, and galena as well as trace amounts of other sulfosalts.

The Coeur Mine mineralization generally resembles that of the Galena Mine, in containing a complex vein set controlled largely by the pattern of faults, and the rheology of the Revett quartzitic and argillitic units. Mineralization at Coeur is entirely in tetrahedrite-dominated veins, with no galena-dominated veins.

The tetrahedrite of the Coeur Mine has a lower silver:copper ratio than that in the Galena Mine, about 20 ounces of silver per percent of copper.


Mining Methods

  • Cut & Fill


Summary:

The Coeur shaft is a three-compartment shaft, 4,100 feet deep, which is used for exhaust ventilation and when needed for hoisting of silver-lead ore from the Galena Mine and silvercopper ore from the Coeur Mine. The two mines are connected on the Coeur 3400/Galena 3700 Level.

The primary mining method at the Coeur mine is conventional cut and fill stopes.

The Coeur mine and shaft is currently on care and maintenance. The Coeur shaft is used for ventilation purposes and provides an alternative means of egress.


Crushing and Grinding


Processing

  • Flotation

Source: Subscription required

Summary:

The 450 tonne-per-day capacity Coeur mill is currently on care-and-maintenance since April 2016.

The majority of the mine production over the past few years has been silver-copper ores. This ore is treated in the Galena mill to produce a copper concentrate. Silver-lead ores are also produced, which are currently being treated in the Coeur mill.

The mill flow sheet for the Coeur mill is similar to the Galena mill.

The Galena processing plant follows a conventional flowsheet:

* Crushing and Screening
* Grinding and Cycloning
* Flotation Concentration
* Concentrate Dewatering
* Tailings Pumping for Sand Fill
* Tailings Pumping for Osburn Tailings Storage Facility

Ore from the mine is hauled in 5-ton cars and directly tipped into a 400-ton coarse ore bin located adjacent to the plant. A Pioneer pan feeder feeds material to a 2-foot by 3-foot Kue Ken jaw crusher. The secondary crushing circuit consists of a ........


Combined production numbers are reported under Galena Complex

Operational Metrics:

Metrics201920182017
Daily milling capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Combined reserves/resources are reported under Galena Complex



Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Apr 10, 2020
....................... Subscription required ....................... Subscription required Subscription required Apr 10, 2020
....................... Subscription required ....................... Subscription required Subscription required Apr 10, 2020
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2019
................................... Subscription required 2018
Annual Information Form 2017
Technical Report 2013
Subscription required - Subscription is required.

Aerial view:

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