Big Blackfoot

The Big Blackfoot is a lead, gold, and silver mine located in Lewis and Clark county, Montana.

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: Big Blackfoot
Secondary: Blackfoot Underground

Commodity

Primary: Lead
Primary: Gold
Primary: Silver

Location

State: Montana
County: Lewis and Clark

Land Status

Land ownership: Unknown
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

Type: Unknown

Workings

Not available

Ownership

Owner Name: Sunshine Mining Co.
Percent: 100.0
Home Office: Idaho
Info Year: 1988

Owner Name: Focal Resources Ltd.
Percent: 100.0
Info Year: 1996

Production

Not available

Deposit

Record Type: Site
Operation Category: Plant
Deposit Type: Epithermal vein, quartz adularia
Plant Type: Leach
Operation Type: Surface
Mining Method: Unknown
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: Y

Physiography

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

Mineral Deposit Model

Model Name: Epithermal vein, quartz adularia

Orebody

Not available

Structure

Type: L
Structure: OGDEN MOUNTAIN QUARTZ MONZONITE

Type: R
Structure: BOULDER BATHOLITH; E LIMB OF LARGE ANTICLINE; N-TRENDING FAULTS CUT BY NE-T

Alterations

Alteration Type: L
Alteration: OXIDATION

Rocks

Not available

Analytical Data

Not available

Materials

Ore: Tetrahedrite
Ore: Galena
Ore: Gold

Comments

Comment (Geology): THE AREA HAS BEEN INTRUDED BY STOCKS, DIKES, AND SILLS WHICH ARE PROBABLY OUTLIERS OF THE BOULDER BATHOLITH

Comment (Deposit): SEE MAS PROPERTY FILE BLACKFOOT SEQ #0300490153 FOR UNDERGROUND DATA AND BIBLIOGRAPHY.

References

Reference (Deposit): MBMG BULL 98, P. 40-45

Reference (Deposit): USBM RI 6334, P. 51-53.

Reference (Deposit): RANDOL MINING DIRECTORY, 1996/97, U.S. MINES AND MINING COMPANIES, P215.

Reference (Deposit): MINING RECORD. INLAND GOLD ADJUSTS VALUE OF BIG BLACKFOOT PROJECT. FEB. 5, 1992.

Reference (Deposit): GOLD MINE IN MT. NOV. 1987, P. 12A.

Reference (Deposit): SPOKESMAN REVIEW (SPOKANE, WA). GOLD PROJECT'S VALUE CUT. JAN. 29, 1992.

Reference (Deposit): ROCKY MOUNTAIN PAYDIRT. SUNSHINE TO DEVELOP BIG BLACKFOOT

Reference (Deposit): AVERY, D.W. MONTANA DIRECTORY - IN PREP.

Principal Gold Districts of Montana

In Montana, 54 mining districts have each have produced more than 10,000 ounces of gold. The largest producers are Butte, Helena, Marysville, and Virginia City, each having produced more than one million ounces. Twenty seven other districts are each credited with between 100,000 and one million ounces of gold production. Read more: Principal Gold Districts of Montana.