The Black Rock is a nickel, chromium, and silver mine located in Grant county, Oregon.
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:
Commodity: Nickel, Chromium, Silver
Lat, Long: 44.33222, -118.78472
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.
Black Rock MRDS details
Site Name
Primary: Black Rock
Commodity
Primary: Nickel
Primary: Chromium
Primary: Silver
Location
State: Oregon
County: Grant
District: Canyon City 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: Malheur Natioal Forest
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Intermontane Plateaus
Physiographic Province: Columbia Plateau
Physiographic Section: Blue Mountain Section
Physiographic Detail: Blue Mountains
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Name: Pyroxenite
Role: Associated
Age Type: Host Rock
Age Young: Late Permian
Name: Pyroxenite
Role: Associated
Age Type: Associated Rock
Age Young: Late Permian
Name: Pyroxenite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Late Permian
Analytical Data
Analytical Data: SAMPLES ASSAYED 0.56-6.4% CR203
Analytical Data: 0.3-0.6 OZ/TON AG
Analytical Data: 0.17-0.19% NI
Materials
Ore: Chromite
Comments
Comment (Workings): 30 FT TRENCH
Comment (Geology): CHROMITE IS DESSEMINATED IN A LENS OR POD OF SERPENTINIZED PYROXENITE
References
Reference (Deposit): THAYER, T.P., CASE, J.E., AND STOTELMEYER, R.B., 1977, MINERAL RESOURCES OF THE STRAWBERRY MOUNTAIN WILDERNESS AND ADJACENT AREAS, GRANT COUNTY, OREGON: USGS OPEN-FILE REPORT 77-420, P. 93
Oregon Gold
"Where to Find Gold in Oregon" 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 Oregon. Read more: Where to Find Gold in Oregon.
