Sheep Mountain Group

The Sheep Mountain Group is a manganese mine located in Baker 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

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: Sheep Mountain Group

Commodity

Primary: Manganese

Location

State: Oregon
County: Baker
District: Lower Burnt River Area

Land Status

Land ownership: BLM Administrative Area
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

Owner Name: John Arthur

Production

Year: 1952
Material type: MN
Description: Ap_Grade: ^23 % Mn
Year: 1952
Time Period: 1952
Material type: MN
Description: Cp_Grade: ^23% Mn

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

General Physiographic Area: Intermontane Plateaus
Physiographic Province: Columbia Plateau
Physiographic Section: Payette Section

Mineral Deposit Model

Model Name: Sedimentary Mn

Orebody

Form: IRREGULAR MASSES

Structure

Not available

Alterations

Not available

Rocks

Name: Argillite
Role: Host
Age Type: Host Rock
Age Young: Early Triassic

Name: Argillite
Role: Host
Age Type: Host Rock Unit
Age Young: Early Triassic

Analytical Data

Analytical Data: AVERAGE OF 27.62 % MANGANESE

Materials

Ore: Psilomelane
Ore: Pyrolusite
Ore: Manganite
Gangue: Quartz

Comments

Comment (Deposit): CONSV. RECORD ( M014407 ) MERGED WITH THIS RECORD AND DELETED FROM OREGON FILE.

Comment (Location): TWO UNPATENTED CLAIMS

References

Reference (Deposit): LIBBEY, F. W., ET AL., 1942 , MANGANESE IN OREGON: ODGMI, BULL 17 , P. 53 .

Reference (Deposit): BROOKS, H.C., MCINTYRE, J.R., AND WALKER, G.W., 1976 GEOLOGIC MAP OF THE OREGON PART OF THE BAKER 1DEG BY 2DEG QUADRANGLE, ODGMI GMS-7, GEOL. MAP

Reference (Deposit): WAGNER, N.S., 1952, FILE REPORT: OREGON DEPARTMENT OF GEOLOGY AND MINERAL INDUSTRIES.

Reference (Deposit): 1952 RECON ODGMI FILE REPOR

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.