West Fork Exchange Prospect

The West Fork Exchange Prospect is a antimony mine located in Elmore county, Idaho at an elevation of 5,801 feet.

About the MRDS Data:

All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.

Mine Info

Name: West Fork Exchange Prospect  

State:  Idaho

County:  Elmore

Elevation: 5,801 Feet (1,768 Meters)

Commodity: Antimony

Lat, Long: 43.8586, -115.36000

Map: View on Google Maps

Satelite View

MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.

Satelite image of the West Fork Exchange Prospect

West Fork Exchange Prospect MRDS details

Site Name

Primary: West Fork Exchange Prospect
Secondary: Anderson - Bida Prospects


Primary: Antimony


State: Idaho
County: Elmore
District: Black Warrior Basin

Land Status

Land ownership: National Forest
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.
Administrative Organization: Boise National Forest


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Owner Name: West Fork Mining Co.
Info Year: 1953


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Record Type: Site
Operation Category: Prospect
Deposit Type: Vein
Operation Type: Surface-Underground
Discovery Method: Unknown
Years of Production:
Significant: N
Deposit Size: S


General Physiographic Area: Rocky Mountain System
Physiographic Province: Northern Rocky Mountains
Physiographic Detail: Sawtooth Mountains

Mineral Deposit Model

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Name: Plutonic Rock
Role: Associated
Age Type: Associated Rock
Age Young: Pliocene

Name: Granite
Role: Host
Age Type: Host Rock
Age Young: Late Jurassic

Analytical Data

Not available


Gangue: Quartz


Comment (Location): Less than 1 mi. SW of Hermada Mine

Comment (Location): Original coordinates for line#1 were: lat/long NAD27 43-51-16N 115-21-19W (43.85444 -115.35528); UTM N4856800 E632200 Z11N; PLSS line# 1: Meridian- Boise, TWNSHP 006N, RNG 009E, Sect 14, Sect_fract . Original coordinates for line#1 (10070737) were: lat/long NAD27 43-51-26N 115-21-23W (43.85722 -115.35639); UTM N4857100 E632100 Z11N; PLSS line# 1: Meridian- Boise, TWNSHP 006N, RNG 009E, Sect 14, Sect_fract .

Comment (Workings): Few Shallow Surface Workings


Reference (Deposit): Popoff, C. C., 1953, Hermada Antimony Deposit, Elmore County, Idaho: USBM Rept. Inv. 4950, 21 P

Reference (Deposit): U.S. Bureau Of Mines Report Of Investigation 4950, 1953, Figs. 2 And 10; P. 13-14.

Reference (Deposit): Hustedde, IBMG Mines & Prospects Of Hailey Quad, 1981

Idaho Gold

Where to Find Gold in Idaho

"Where to Find Gold in Idaho" looks at the density of modern placer mining claims along with historical gold mining locations and mining district descriptions to determine areas of high gold discovery potential in Idaho. Read more at Where to Find Gold in Idaho.