Eight Dollar Mountain

The Eight Dollar Mountain is a chromium mine located in Josephine county, Oregon at an elevation of 2,598 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: Eight Dollar Mountain
Secondary: Eight Dollar No. 1
Secondary: Nickel-Chrome Group

Commodity

Primary: Chromium
Tertiary: Nickel
Tertiary: Cobalt
Tertiary: Iron

Location

State: Oregon
County: Josephine
District: Illinois River

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.

Holdings

Not available

Workings

Not available

Ownership

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Discovery Year: 1942
Years of Production:
Organization:
Significant: N
Deposit Size: M

Physiography

General Physiographic Area: Pacific Mountain System
Physiographic Province: Pacific Border Province
Physiographic Section: Klamath Mountains

Mineral Deposit Model

Not available

Orebody

Form: SEAMS, BANDS, VEINLIKE

Structure

Type: L
Description: High-Angle, West Dipping Fault, And High-Angle, Northeast Trending Fault

Alterations

Not available

Rocks

Name: Diabase
Role: Associated
Age Type: Associated Rock Unit
Age Young: Late Jurassic

Name: Diabase
Role: Associated
Age Type: Host Rock
Age Young: Late Jurassic

Name: Diabase
Role: Associated
Age Type: Associated Rock
Age Young: Late Jurassic

Name: Diabase
Role: Associated
Age Type: Host Rock Unit
Age Young: Late Jurassic

Analytical Data

Analytical Data: MASSIVE CHROMITE WITH SOME DUNITE -43.30% CR2O3, 10.60% FE NORTHERN LATERITE DEPOSIT HAS INDICATED AVERAGE GRADE OF 1.18 NI, 0.08 % CO, 24.6 % FE, AND 1.17 % CR.
Analytical Data: DISSEMINATED CHROMITE IN DUNITE: 22.81% CR2O3, 9.09% FE

Materials

Ore: Chromite
Ore: Garnierite

Comments

Comment (Deposit): APPEAR TO BE REMNANTS OF OLD LANDSLIDE OR SLUMP. ESTIMATED AVERAGE UNWEATHERED ROCK CONTENT IN SOIL OF NORTHERN AREA IS 35 % AND IN SOUTHERN AREA 45 % BY VOLUME.

Comment (Commodity): CLAIMED THAT ULTRABASIC ROCKS CONTAIN NICKEL & TIN

Comment (Location): S 1/2 NE 1/4 LAND STATUS OF THE MTN. INVOLVES PUBLIC LAND UNDER MANAGEMENT OF U.S. FOREST SERVICE AND BLM, STATE OF OREGON, JOSEPHINE COUNTY AND PRIVATE OWNERSHIP.

Comment (Workings): DEVELOPED BY SEVERAL OPEN CUTS

Comment (Deposit): RECORDS ( M013268 ) AND ( M013510 ) MERGED WITH THIS RECORD AND DELETED FROM OREGON FILE.

References

Reference (Deposit): 1957 DIREXPL NEW DELHI MINES, LTD.

Reference (Deposit): 1978 GEOLMAP ODGMI-LEN RAMP

Reference (Deposit): THAYER, T. P., 1974, UNPUBL. DATA

Reference (Deposit): OREGON METAL MINES HANDBOOK, 1952 , ODGMI BULL. 14-C, V. 2 , SEC. 1 , P. 137 .

Reference (Deposit): RAMP, LEN, 1978 , INVESTIGATIONS OF NICKEL IN OREGON: ODGMI MISC. PAPER NO. 20 , P. 29 - 31

Reference (Deposit): 5) RAMP, L. AND PETERSON, N.V., 1979, GEOLOGY AND MINERAL RESOURCES OF JOSEPHINE COUNTY, OREGON; ODGMI BULL. 100, P.37

Reference (Deposit): 1953 GEOLMAP CLIMAX MOLYBDENUM COMPANY

Reference (Deposit): RAMP, LEN, 1961, CHROMITE IN SOUTHWESTERN OREGON: OREGON DEPT. GEOLOGY AND MINERAL IND. BULL. 52, 169 P.

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.