The Oro Cache Mine is a gold mine located in Lemhi county, Idaho at an elevation of 8,501 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
Elevation: 8,501 Feet (2,591 Meters)
Commodity: Gold
Lat, Long: 45.2836, -113.69190
Map: View on Google Maps
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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.
Oro Cache Mine MRDS details
Site Name
Primary: Oro Cache Mine
Secondary: Ore Cash
Secondary: Freeman
Secondary: California
Secondary: Idaho Veins
Secondary: Marc Claims
Commodity
Primary: Gold
Secondary: Lead
Secondary: Silver
Tertiary: Copper
Tertiary: Zinc
Location
State: Idaho
County: Lemhi
District: Carmen Creek 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: Salmon National Forest
Holdings
Type: Located Claim
Workings
Type: Underground
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Underground
Year First Production: 1897
Year Last Production: 1912
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Rocky Mountain System
Physiographic Province: Northern Rocky Mountains
Physiographic Detail: Beaverhead Mountains
Mineral Deposit Model
Not available
Orebody
Form: TABULAR, DISCONTINUOUS
Structure
Type: R
Structure: Miner Lake Fault
Description: Miner Lake Fault
Alterations
Alteration Type: L
Alteration: Oxidation
Rocks
Name: Quartzite
Role: Host
Age Type: Host Rock Unit
Age Young: Neoproterozoic
Name: Quartzite
Role: Host
Age Type: Host Rock
Age Young: Neoproterozoic
Analytical Data
Analytical Data: GALENA ASSAYED 20 OZ AG/TON
Materials
Ore: Chalcopyrite
Ore: Sphalerite
Ore: Gold
Gangue: Quartz
Gangue: Pyrite
Gangue: Magnetite
Gangue: Limonite
Comments
Comment (Location): In Freeman Ck Cirque, 1 Mi Nne Of Freeman Peak. ; Info From Land.St :(1978)
Comment (Production): Primary Production From Or0 Cache Vein. Estimated Total Production: Over $100,000 In Au, Ag And Pb.
Comment (Development): Steam Powered 10-Stamp Mill, Equipped For Amalgamation And Concentration (1897-1914). Freeman Vein Was Originally Separate Operation.
Comment (Deposit): 4 Veins- California, Idaho, Oro Cache, Freeman. Oro Cache Was 4-6 Ft Wide, Deeply Oxidized Shear Zone. Others Were Qtz-Galena Veins, .5-5 Ft Wide. Idaho Vein Was Higest Grade, But Thin And Discontinuous.
Comment (Workings): 9 Adits, Lowest Adit Is 700 Ft Long. All Workings Inaccessible (1976)
Comment (Deposit): Quartzite Trends N20-55e, Steep W Dip ; Info.Src : 1 Pub Lit; 2 Unpub Rept
Comment (Geology): Original alteration entry: Local - Oxidation
Comment (Geology): Original ore control entry: Shear Zone, Subsidiary Fractures To Miner Lake Fault
References
Reference (Deposit): Mackenzie, W. O., 1949, Geology And Ore Deposits Of A Section Of The Beaverhead Range, East Of Salmon, Lemhi County, Idaho: Moscow, Idaho, Univ. Of Idaho, M. S. Thesis, 52 P.
Reference (Deposit): Umpleby, J.B., 1913, Geology and Ore Deposits Of Lemhi County, Idaho; USGS Bulletin528, P.125, 126
Reference (Deposit): Bell, Robert N., 1904, Report Of The Mining Districts Of Idaho For The Year 1903, P. 105.
Reference (Deposit): Peters, D. W., 1976, Divide Planning Unit- Salmon Nat For Rept
Reference (Deposit): Min Res Of Us, 1912-1915, For Years 1911-1914
Reference (Production): Peters, D. W., 1976, Divide Planning Unit- Salmon Nat For Rept
Reference (Deposit): Lipton, D. A., And Others, 1988, Mineral Resources Of The West Big Hole Study Area, Beaverhead County, Montana: U.S. Bureau Of Mines Open File Report MLA 16-88, Appendix B, No. 8, P. 102-105; Plate 1, No. 16.
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.
