Mastodon Mine

The Mastodon Mine is a mine located in Shoshone county, Idaho at an elevation of 4,377 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: Mastodon Mine
Secondary: Rochester Group

Commodity

Tertiary: Lead
Tertiary: Gold
Tertiary: Silver
Tertiary: Zinc

Location

State: Idaho
County: Shoshone
District: Avery 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: St. Joe 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 Method: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

General Physiographic Area: Rocky Mountain System
Physiographic Province: Northern Rocky Mountains
Physiographic Detail: Bitterroot Mountains

Mineral Deposit Model

Not available

Orebody

Form: IRREGULAR BUNCHES

Structure

Type: L
Description: Complex Folding And Faulting (Nw - Se)

Alterations

Alteration Type: L
Alteration Text: Oxidation

Rocks

Name: Slate
Role: Host
Age Type: Host Rock Unit
Age Young: Neoproterozoic

Name: Slate
Role: Host
Age Type: Host Rock
Age Young: Neoproterozoic

Analytical Data

Analytical Data: AVERAGED 0.3 OZ AG/1 % PB

Materials

Ore: Galena
Gangue: Quartz
Gangue: Calcite
Gangue: Siderite
Gangue: Pyrite

Comments

Comment (Location): HEAD OF WEST FORK SLATE CREEK

References

Reference (Deposit): WAGNER, W. R., 1949 , THE GEOLOGY OF PART OF THE SOUTH SLOPE OF THE ST. JOE MTNS.: IDAHO BUREAU OF MINES AND GEOLOGY PAMPHLET 82 , 48 P.

Reference (Deposit): COLLIER, A. J., 1906 , ORE DEPOSITS OF THE ST. JOE RIVER BASIN, IDAHO: USGS BULL. 285 , P. 129 - 139

Reference (Deposit): PARDEE, J. T., 1911 , GEOLOGY AND MINERALIZATION OF THE UPPER ST. JOE RIVER BASIN, IDAHO: USGS BULL. 470 , P. 39 - 61

Reference (Deposit): 1906 OTHER A. J. COLLIER, BULL. 285

Reference (Deposit): 1911 GEOLMAP J. T. PARDEE, BULL. 470

Reference (Deposit): 1949 GEOLMAP IDAHO BUREAU OF MINES AND GEOLOGY PAMPHLET 82

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.