Big Four Prospect

The Big Four Prospect is a silver mine located in Flathead county, Montana at an elevation of 3,901 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: Big Four Prospect

Commodity

Primary: Silver
Secondary: Copper
Secondary: Gold

Location

State: Montana
County: Flathead

Land Status

Land ownership: Private
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

Not available

Workings

Type: Underground

Ownership

Owner Name: Bill And Matt Wilhelm

Production

Not available

Deposit

Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Discovery Year: 1905
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: Salish Mountains

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Type: R
Description: Nw-Plunging Anticline To The West; Large Scale N-Trending And W-Trending Faults To The East.

Alterations

Not available

Rocks

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

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

Analytical Data

Analytical Data: CHANNEL SAMPLE NORMAL TO VEIN ASSAYED 0.11 % CU, 0.20 OZ/TON AG, 0.001 OZ/TON AG

Materials

Gangue: Quartz

Comments

Comment (Deposit): QUARTZ VEIN IS VUGGY

Comment (Workings): WORKINGS CONSIST OF ONE ADIT WITH A 75 FT DRIFT.

Comment (Geology): FISSURE VEINS IN THIS AREA TEND TO LIE PARALLEL TO FAULTS. COUNTRY ROCK STRIKES N 15 DEG W AND DIPS 30 DEG E. ; GEOL.DESC: 12.5 INCH VUGGY WHITE QTZ VEIN, 0.11% CU, 0.2 OZ AG, 0.001 OZ AU PER TON

Comment (Location): WEST FORK OF DAYTON CREEK, NE BANK.

Comment (Development): LAST CLAIM HOLDERS WERE SONS OF ORIGINAL LOCATOR.

References

Reference (Deposit): JOHNS, W. M., 1964 , GEOLOGIC INVESTIGATIONS IN THE KOOTENAI-FLATHEAD AREA, NORTHWEST MONTANA: MONTANA BUREAU OF MINES AND GEOLOGY BULL. 42 , PP. 46 - 47 .

Reference (Deposit): JOHNS, W. M., 1970 , GEOLOGY AND MINERAL DEPOSITS OF LINCOLN AND FLATHEAD COUNTIES, MONTANA: MONTANA BUREAU OF MINES AND GEOLOGY BULL. 79 , P 144 .

Reference (Deposit): CONSV. DIV. COMP. DATE, 12-22-1970

Reference (Analytical Data): SRC.REF: JOHNS, W. M., 1964 : MONTANA BUREAU OF MINES AND GEOLOGY, BULL 42 , P. 47 .

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.