Imperial - Eagle Group

The Imperial - Eagle Group is a gold 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

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: Imperial - Eagle Group
Secondary: Imperial
Secondary: Ivy May
Secondary: Winchester

Commodity

Primary: Gold
Primary: Silver
Tertiary: Zinc
Tertiary: Molybdenum
Tertiary: Arsenic
Tertiary: Copper
Tertiary: Lead

Location

State: Oregon
County: Grant
District: Cable Cove

Land Status

Administrative Organization: Wallowa-Whitman National Forest

Holdings

Not available

Workings

Not available

Ownership

Owner Name: Brandenthaler, A. (Estate)
Years: 1980 -

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Deposit Type: Vein
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

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Not available

Alterations

Not available

Rocks

Name: Diorite
Role: Host
Age Type: Host Rock Unit
Age Young: Late Cretaceous

Name: Diorite
Role: Host
Age Type: Host Rock
Age Young: Late Cretaceous

Analytical Data

Analytical Data: ESTIMATED RATIO OF SULFIDES TO GANGUE 1:10 . AU LESS THAN 10 PERCENT FREE. AG TO AU RATIO 10:1

Materials

Ore: Chalcopyrite
Ore: Galena
Ore: Sphalerite
Ore: Molybdenite
Gangue: Quartz
Gangue: Calcite
Gangue: Chlorite
Gangue: Sericite

Comments

Comment (Geology): GEOL.DESC: ORE IN NARROW LENSES UP TO 24 INCHES WIDE, STOPE AND PITCH LENGTH LESS THAN 50 FT. AND FOUND NEAR HANGING WALL.

Comment (Location): SW 1/4

Comment (Production): TOTAL PRODUCTION PROBABLY DOES NOT EXCEED $100,000 .

Comment (Workings): DEVELOPMENT TOTALS ABOUT 1,000 FEET FROM 6 ADITS. TOTAL PRODUCTION PROBABLY DOES NOT EXCEED $100,000 .

Comment (Deposit): QUARTZ VEINS IN THE CABLE COVE ARE PERSISTANT. THE EAGLE VEIN, THE MOST EASTERLY OF THE VEINS, CAN BE TRACED FOR ABOUT 3 MILES. ORE SHOOTS REACH LENGTHS OF 200 FEET AND ARE MADE UP OF LENTICULAR BODIES OF SULPHIDES.

References

Reference (Deposit): BROOKS, H. C., AND RAMP, L., 1968 , GOLD AND SILVER IN OREGON, ODGMI, BULL. 61 , P. 70 .

Reference (Deposit): OREGON METAL MINE HANDBOOK, 1939 , ODGMI, BULL. 14-A, P. 19 .

Reference (Deposit): HEWITT, D.F., 1931, ZONAL RELATIONSHIPS OF THE LODES OF THE SUMPTER QUADRANGLE; AIME TRANS., V.5, P.305

Reference (Production): ODGMI, BULL 14 - A, P. 19

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.