Montana Prospect

The Montana Prospect is a mine located in Washington county, Idaho at an elevation of 5,801 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: Montana Prospect

Commodity

Tertiary: Copper
Tertiary: Iron

Location

State: Idaho
County: Washington
District: Iron Mountain 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.
Administrative Organization: Payette National Forest

Holdings

Not available

Workings

Type: Underground

Ownership

Owner Name: Siegwein, John
Home Office: Weiser, Id
Years: 1943 -

Production

Not available

Deposit

Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Discovery Year: 1897
Discovery Method: Ore-Mineral Not In Place
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

General Physiographic Area: Intermontane Plateaus
Physiographic Province: Columbia Plateau
Physiographic Section: Payette Section
Physiographic Detail: Cuddy Mountains

Mineral Deposit Model

Not available

Orebody

Form: LENS, TABULAR , BLANKET

Structure

Type: R
Description: High - Angle Faulting With Westward Tilting Of The Fault Blocks.

Alterations

Alteration Type: L
Alteration Text: Cavities In Magnetite Due To Leaching Of Sulfides.

Rocks

Name: Diorite
Role: Associated
Age Type: Host Rock Unit
Age Young: Late Triassic

Name: Diorite
Role: Associated
Age Type: Associated Rock
Age Young: Pliocene

Analytical Data

Analytical Data: HEMATITE SAMPLE GAVE 53.67 % FE, MAGNETITE SAMPLE GAVE 66.95 % FE

Materials

Ore: Magnetite
Ore: Hematite
Ore: Chalcopyrite
Gangue: Pyrite
Gangue: Limonite
Gangue: Garnet
Gangue: Quartz

Comments

Comment (Commodity): IRON DEPOSITS ARE INSIGNIFICANT IN SIZE.

Comment (Reserve-Resource): RESERVES CONTAIN BOTH HEMATITE AND MAGNETITE ORE

Comment (Development): ECON.COM: 30 MI FROM RAIL HEAD AT WEISER

Comment (Deposit): Discovery Year: LATE 1890'S

References

Reference (Deposit): BELL, R. N., 1918, NINETEENTH ANNUAL REPORT OF THE MINING INDUSTRY OF IDAHO FOR THE YEAR 1917, P. 98.

Reference (Deposit): MACKIN, J. H., 1953, IRON ORE DEPOSITS OF THE IRON MTN. DISTRICT, IDAHO: U.S. GEOLOGICAL SURVEY BULL. 982 - E, 30 P.

Reference (Deposit): MACKIN, J.H., 1947 , IRON ORE DEPOSITS OF THE IRON MOUNTAIN DISTRICT, WASHINGTON COUNTY, IDAHO: USGS OPEN-FILE REPT., 23 P.

Reference (Deposit): 1918 COMPILE 19TH ANN. REPT. OF THE MINING INDUSTRY FOR 1917

Reference (Deposit): 1947 RECON MACKIN, J.H., OPEN-FILE REPT.

Reference (Deposit): 1953 GEOLMAP MACKIN, J.H., BULL. 982-E

Idaho Gold

"Where to Find Gold in Idaho" 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 Idaho. Read more: Where to Find Gold in Idaho.