Chambers

The Chambers is a chromium mine located in Grant county, Oregon at an elevation of 6,594 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: Chambers
Secondary: George Len
Secondary: Chambers Mine

Commodity

Primary: Chromium

Location

State: Oregon
County: Grant
District: John Day 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.

Holdings

Type: Fee Ownership

Workings

Type: Underground

Ownership

Owner Name: C. P Haight Jr
Percent: 100.0
Home Office: Oregon
Info Year: 1975

Production

Year: 1918
Description: Ore Averaged 30-33 Percent Cr203 2720 Tonnes/Annum
Year: 1917
Description: Ore Averaged 30-33 Percent Cr203 2720 Tonnes/Annum

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Surface-Underground
Mining Method: Unknown
Year First Production: 1918
Discovery Year: 1917
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

General Physiographic Area: Intermontane Plateaus
Physiographic Province: Columbia Plateau
Physiographic Section: Blue Mountain Section

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Not available

Alterations

Not available

Rocks

Not available

Analytical Data

Not available

Materials

Unknown: Spinel
Unknown: Serpentine
Unknown: Pyroxene
Unknown: Olivine
Unknown: Chromite

Comments

Comment (Deposit): OWNER: C.P. HAIGHT, JR. OTHER NAME: GEORGE LEN. FLD OP FIRST QUARTER FY 1980 SHOWS NO DEPOSIT REPORT PLANNED. CR:FE RATIO IS 1.48:1. DROPPED FROM EVALUATION DURING FY 1980

Comment (Geology): CHROME TO IRON RATIO EQUALS 1.48 TO 1.

Comment (Economic Factors): DILUTION ALLOWANCE OF 10 PERCENT CONSIDERED FOR UNDERGROUND MINING.

Comment (Production): THE 37.7 PERCENT CR2O3 CONCENTRATE WOULD HAVE A CR:FE RATIO OF 2.16.

Comment (Economic Factors): DILUTION ALLOWANCE OF 10 PERCENT CONSIDERED FOR SURFACE MINING.

Comment (Geology): TYPE OF WALLROCK ALTERATION IS SERPENTINIZATION.

Comment (Reserve-Resource): M1C1=M2C1+M3C1+M4C1 MATRIX 1. MATRIX 1 REPRESENTS TONNAGE AND GRADE FOR THE CHAMBERS MINE AS A WHOLE INCLUDING THE SOUTHWEST, CENTRAL, AND NORTHEAST OREBODIES. MATRIX 2 REPRESENTS THE NORTHEAST OREBODY. COLUMN 1, QUANTITY AT 75 PERCENT REPRESENTS CHROMITE RESOURCES DRILLED BY THE U. S. BUREAU OF MINES IN 1939. OTHER QUANTITIES OF COLUMN 1 (PROBABILITIES 50-10 PERCENT) ARE CUMULATIVE FROM COLUMN 2. COLUMN 2 REPRESENTS A POSSIBLE EXTENSION IN DEPTH OF THE NORTHEAST OREBODY BELOW THE MAXIMUM DEPTH OF CORE DRILLING AT THE 6250 FOOT LEVEL. THIS DEPTH EXTEN- SION WAS CARRIED 98 METERS DOWNDIP OR 85 METERS VERTICALLY MATRIX 3 REPRESENTS TONNAGE AND GRADE FOR THE CENTRAL ORE BODY.

References

Reference (Reserve-Resource): HUNDHAUSEN, R.J., 1956, JOHN DAY CHROMITE STUDIES,

Reference (Reserve-Resource): BUMINES RI 5238.

Reference (Deposit): U.S. BUREAU OF MINES RI 5238, 1956, P. 9.

Reference (Deposit): OR. DEPT. GEOL. AND MIN. INDUST. BULLETIN 14-B, 1941, P. 21.

Reference (Deposit): OR. DEPT. GEOL. AND MIN. INDUST. BULLETIN 9, 1938, P. 60.

Reference (Deposit): U.S. GEOLOGICAL SURVEY BULLETIN 725-A, 1920, P. 52.

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.