The Deep Gorge Chromite is a chromium mine located in Josephine county, Oregon at an elevation of 1,201 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: 1,201 Feet (366 Meters)
Commodity: Chromium
Lat, Long: 42.315, -123.78194
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.
Deep Gorge Chromite MRDS details
Site Name
Primary: Deep Gorge Chromite
Commodity
Primary: Chromium
Tertiary: Platinum
Tertiary: Palladium
Tertiary: Rhodium
Tertiary: Iridium
Tertiary: Ruthenium
Location
State: Oregon
County: Josephine
District: Illinois River Area
Land Status
Land ownership: Federal
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: Siskiyou National Forest
Holdings
Not available
Workings
Type: Surface/Underground
Ownership
Owner Name: Grissom, J. N. And Mac
Owner Name: Inman, J. E.
Production
Year: 1958
Time Period: 1941-1958
Material type: TOTAL
Description: Cp_Grade: ^45.11% Cr2o3 (Weighted Average Grade)
Year: 1958
Time Period: 1951-1958
Material type: ORE
Description: Cp_Grade: ^43-50% Cr2o3
Year: 1945
Time Period: 1941-1945
Material type: ORE
Description: Cp_Grade: ^43-44% Cr2o3
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Discovery Year: 1915
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Pacific Mountain System
Physiographic Province: Pacific Border Province
Physiographic Section: Klamath Mountains
Mineral Deposit Model
Model Name: Podiform chromite (minor)
Orebody
Form: LENS, CURVED TABULAR, STRINGERS
Structure
Type: L
Description: North-Trending Fault Of Considerable Displacement
Alterations
Not available
Rocks
Name: Hornblendite
Role: Associated
Age Type: Host Rock
Age Young: Late Jurassic
Name: Hornblendite
Role: Associated
Age Type: Host Rock Unit
Age Young: Late Jurassic
Analytical Data
Analytical Data: RH=21 PPB. CR:FE >2
Analytical Data: RU=100 PPB
Analytical Data: IR=50 PPB
Analytical Data: PT=41 PPB
Analytical Data: 1 PGE ANALYSIS: PD=15 PPB
Materials
Ore: Chromite
Gangue: Talc
Gangue: Calcite
Comments
Comment (Location): IN ILLINOIS NATIONAL WILD AND SCENIC RIVER. ON EAST BANK ILLINOIS RIVER OPPOSITE DAILEY CREEK. UTM GIVEN IS FOR PGE SAMPLE SITE LOCATION. LAT/LONG GIVEN ARE FOR MINE SYMBOL LABELED DEEP GORGE ON TOPO MAP; UTM FOR THIS IS 4684840N, 435560E. OTHER REFERENCES STATE LOCATION AS NW/4 OR N/2 NE/4 OF SECTION.
Comment (Development): 1 CLAIM LOCATED 1939
Comment (Workings): MANY TUNNELS NOW CAVED, WAS DRIVEN IN FROM LARGE OPEN CUT
Comment (Deposit): Discovery Year: WW I
Comment (Deposit): ATTITUDES ARE FOR MAIN LENS. CHROMITE IS COARSE, FRACTURED, AND HIGHLY LUSTROUS. LOWER ZONE MAY BE EXTENSION OF MOCKINGBIRD MINE TO NORTH
References
Reference (Deposit): PAGE, N.J, JOHNSON, M.G., HAFFTY, JOSEPH, AND RAMP, LEN, 1975, OCCURRENCE OF PLATINUM GROUP METALS IN ULTRAMAFIC ROCKS OF THE MEDFORD-COOS BAY 2 DEGREE QUADRANGLE, SOUTHWESTERN OREGON: U.S. GEOLOGICAL SURVEY MISCELLANEOUS FIELD STUDIES MAP MF-694, SCALE 1:250,000.
Reference (Deposit): RAMP, LEN, AND PETERSON, N.V., 1979, GEOLOGY AND MINERAL RESOURCES OF JOSEPHINE COUNTY, OREGON: OREGON DEPARTMENT OF GEOLOGY AND MINERAL INDUSTRIES BULLETIN 100, TABLE 1.
Reference (Deposit): OREGON DEPARTMENT OF GEOLOGY AND MINERAL INDUSTRIES, 1952, OREGON METAL MINES HANDBOOK, SOUTHWESTERN OREGON--JOSEPHINE COUNTY (2D ED.): OREGON DEPARTMENT OF GEOLOGY AND MINERAL INDUSTRIES BULLETIN 14-C, V. 2, SEC. 1, P. 127-128.
Reference (Deposit): THAYER, T.P., 1974, U.S. GEOLOGICAL SURVEY, UNPUB. DATA.
Reference (Production): THAYER
Reference (Deposit): CARLSON, C.A., AND OTHERS, 1985, ANALYSES FOR PLATINUM-GROUP ELEMENTS IN SAMPLES FROM PODIFORM CHROMITE DEPOSITS, CALIFORNIA AND OREGON: U.S. GEOLOGICAL SURVEY OPEN-FILE REPORT 85-442, 14 P.
Reference (Deposit): RAMP, LEN, 1961, CHROMITE IN SOUTHWESTERN OREGON: OREGON DEPARTMENT OF GEOLOGY AND MINERAL INDUSTRIES BULLETIN 52, P. 44-46.
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.
