Fargo Group

The Fargo Group is a copper and gold mine located in Wallowa 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: Fargo Group
Secondary: Eureka Mining Property
Secondary: Mountain Chief
Secondary: Indian Trail

Commodity

Primary: Copper
Primary: Gold
Secondary: Iron

Location

State: Oregon
County: Wallowa
District: Imnaha

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.
Administrative Organization: Wallowa-Whitman National Forest

Holdings

Not available

Workings

Type: Underground

Ownership

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Discovery Year: 1897
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N

Physiography

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

Mineral Deposit Model

Not available

Orebody

Form: TABULAR

Structure

Not available

Alterations

Alteration Type: L
Alteration Text: Feldspars In The Diorite Are Replaced By Sericite And Kaolinite. Amphiboles Are Partially Replaced By Chlorite, Magnetite, And Limonite

Rocks

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

Analytical Data

Analytical Data: GRAB SAMPLE FROM MOUNTAIN CHIEF DUMP (CBF 55) GAVE 54.5% FE, 0.8% CU.

Materials

Ore: Chalcopyrite
Ore: Magnetite
Ore: Pyrite
Ore: Hematite

Comments

Comment (Geology): DEPOSITS ARE CHARACTERISTICALLY SMALL, TABULAR FISSURE FILLINGS CONTAINING A LARGE PROPORTION OF SPECULARITE HEMATITE, MAGNETITE, AND LESSER AMOUNTS OF PYRITE AND CHALCOPYRITE.

Comment (Location): LOCATED NEAR CONFLUENCE OF SNAKE RIVER AND IMNAHA RIVER LAND STATUS VALUE CALCULATED 7-94 USING GIS OVERLAY ANALYSIS WITH USFS LAND OWNERSHIP BOUNDARIES, 1:126,720 SCALE.

References

Reference (Analytical Data): SRC.REF: REFERENCE 1

Reference (Deposit): LIBBEY, F.W., 1943, SOME MINERAL DEPOSITS IN THE AREA SURROUNDING THE JUNCTION OF THE SNAKE AND IMNAHA RIVERS: ODGMI GMI 11, P. 5.

Reference (Deposit): VALLIER, T.L., 1974, A PRELIMINARY REPORT ON THE GEOLOGY OF PART OF THE SNAKE RIVER CANYON, OREGON AND IDAHO, ODGMI GMS-6

Reference (Deposit): 1942 RECON ODGMI, REF.

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.