Wildhorse Mine

The Wildhorse Mine is a tungsten mine located in Custer county, Idaho at an elevation of 7,999 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

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.

Site Name

Primary: Wildhorse Mine
Secondary: Beaver
Secondary: Steep Climb
Secondary: Hard To Find

Commodity

Primary: Tungsten
Tertiary: Beryllium
Tertiary: Molybdenum

Location

State: Idaho
County: Custer
District: Alto District

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: Challis National Forest

Holdings

Not available

Workings

Not available

Ownership

Owner Name: John Rosenkranze

Owner Name: Sanders Associates, Inc.

Production

Year: 1955
Time Period: 1954-1955
Material type: ORE
Description: Cp_Grade: ^0.87% Wo3

Deposit

Record Type: Site
Operation Category: Producer
Operation Type: Unknown
Year First Production: 1954
Discovery Year: 1953
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

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

Mineral Deposit Model

Not available

Orebody

Form: LINEAR

Structure

Type: L
Description: Asymmetric Anticline, Axis N 20 Deg W, Steep Flank On The East

Alterations

Alteration Type: L
Alteration Text: Sericitized

Rocks

Name: Diorite
Role: Associated
Age Type: Host Rock
Age Young: Late Cretaceous

Name: Diorite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Late Cretaceous

Name: Diorite
Role: Associated
Age Type: Associated Rock
Age Young: Late Cretaceous

Analytical Data

Analytical Data: STEEP CLIMB OUTCROP FROM 1.89 - 2.25% WO3, HARD TO FIND OUTCROP FROM 1.5-2.48% WO3, BEAVER OUTCROP AVE 0.25% WO3. TACTITE DEPOSITS CONTAINED 0.002 - 0.013 % BEO TACTITE DEPOSITS CONTAINED 0.002 - 0.013 % BEO

Materials

Ore: Molybdenite
Ore: Scheelite
Gangue: Calcite
Gangue: Quartz
Gangue: Garnet
Gangue: Actinolite
Gangue: Tremolite
Gangue: Chlorite
Gangue: Diopside
Gangue: Pyrite

Comments

Comment (Deposit): DESCRIPTION ABOVE FOR TACTITE ZONE IN THE HARD TO FIND PIT; TACTITE ZONE ON BEAVER CLAIMS IS 40 FT LONG, 17 FT WIDE, TRENDS N 20 DEG W, AND DIPS 63 DEG E; A 3RD TACTITE ZONE TRENDS N 12 DEG E, DIPS 60 DEG E, IS 51 FT LONG, AND 15 FT WIDE

Comment (Geology): LEUCOGRANODIORITE DIKES REFERRED TO AS ALASKITE BY LEE, 1955. AND PATTEE, 196, AND PATTEE, 196,

Comment (Location): ABOUT 4 MI NE OF HYNDMAN PEAK

Comment (Production): GROSS VALUE OF $212,000.

Comment (Development): 40 - TON MILL

References

Reference (Deposit): 1975 COMPILE USBM, ACTIVITY OF IDAHO MINING PROPERTIES

Reference (Production): COOK, E. F., 1956, IDAHO BUREAU OF MINES & GEOL. PAM. 108, P. 12

Reference (Deposit): LEE, H., 1955 , TUNGSTEN MINERALIZATION AT THE WILDHORSE MINE, CUSTER COUNTY, IDAHO: MOSCOW, IDAHO, UNIV. OF IDAHO, M.S. THESIS, 45 P.

Reference (Deposit): 5) PATTEE, E.C., AND OTHERS, 1968 , BERYLLIUM RESOURCES OF IDAHO, WASHINGTON, MONTANA, AND OREGON: USBM REPT. INV. 7148, 169 P.

Reference (Deposit): UMPLEBY, J.R., 1930, USGS BULL 814.

Reference (Deposit): 1955 GEOLMAP IDAHO BUREAU OF MINES & GEOL. PAMPHLET 108

Reference (Deposit): 1975 COMPILE IDAHO DEPT. LABOR ANNUAL REPORT

Reference (Deposit): COOK, E. F., 1956, TUNGSTEN DEPOSITS OF SOUTH - CENTRAL IDAHO, IDAHO BUREAU OF MINES AND GEOLOGY PAMPHLET 108, 43 P.

Reference (Deposit): USBM, 1975, ACTIVITY OF IDAHO MINING PROPERTIES, 1974, USBM, BOISE, IDAHO, 61 P.

Reference (Deposit): IDAHO DEPT. OF LABOR AND INDUSTRIAL SERVICES, JULY 1974 - JUNE 1975, FIRST ANNUAL REPT. ADDENDUM, 95 P.

Idaho Gold

"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: Where to Find Gold in Idaho.