The Oro Mine is a silver and gold mine located in Boise county, Idaho at an elevation of 9,701 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: 9,701 Feet (2,957 Meters)
Commodity: Silver, Gold
Lat, Long: 44.0097, -115.84030
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.
Oro Mine MRDS details
Site Name
Primary: Oro Mine
Commodity
Primary: Silver
Primary: Gold
Tertiary: Lead
Tertiary: Zinc
Location
State: Idaho
County: Boise
District: Grimes Pass 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: Boise National Forest
Holdings
Not available
Workings
Type: Underground
Ownership
Owner Name: Oro Mining Co.
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Deposit Type: Vein
Operation Type: Unknown
Discovery Method: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Rocky Mountain System
Physiographic Province: Northern Rocky Mountains
Physiographic Detail: Sawtooth Mountains
Mineral Deposit Model
Not available
Orebody
Form: LENSES, PODS, BUNCHES, STRINGERS
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: Sericitized, Bleaching
Rocks
Name: Quartz Monzonite
Role: Associated
Age Type: Host Rock
Age Young: Miocene
Name: Quartz Monzonite
Role: Associated
Age Type: Associated Rock
Age Young: Pliocene
Analytical Data
Analytical Data: QUARTZ ASSAYED 31.12 OZ AU/TON, 7.8 OZ AG/TON.
Analytical Data: SULFIDE BOULDERS ASSAYED 0.08 OZ AU/TON, 39.3 OZ AG/TON
Materials
Ore: Sphalerite
Ore: Tetrahedrite
Ore: Galena
Ore: Chalcopyrite
Ore: Gold
Gangue: Quartz
Gangue: Pyrite
Gangue: Calcite
Comments
Comment (Location): ON GRIMES CR. 1 MI. BELOW GRIMES PASS.
Comment (Development): 25 TON MILL
Comment (Workings): 2 TUNNELS, 2 SHAFTS
Comment (Geology): SHEAR ZONE TRENDS N 10 DEG E, DIPS STEEPLY W.
References
Reference (Deposit): GORDON, F., 1934, THE GEOLOGY OF THE ORO MINE, BOISE BASIN, IDAHO: MOSCOW, IDAHO, UNIV. OF IDAHO BS THESIS, 12 P.
Reference (Deposit): 1947 GEOLMAP ANDERSON, A. L., BULL. 944-
Reference (Production): ANDERSON, A. L., 1947, USGS BULL. 944-C.
Reference (Deposit): ANDERSON, A. L., 1947, GEOLOGY AND ORE DEPOSITS OF BOISE BASIN, IDAHO: USGS BULL. 944-C, P. 119 - 319.
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.
