Strawn Mine

The Strawn Mine is a gold and silver mine located in Madison county, Montana at an elevation of 7,100 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: Strawn Mine

Commodity

Primary: Gold
Primary: Silver

Location

State: Montana
County: Madison
District: Tidal Wave 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.

Holdings

Not available

Workings

Type: Underground

Ownership

Owner Name: Claude And Hal Dale
Years: 1981 -

Production

Year: 1952
Time Period: 1952
Description: Cp_Grade: ^.221 Oz/Ton Au

Deposit

Record Type: Site
Operation Category: Past Producer
Deposit Type: Replacement
Operation Type: Unknown
Discovery Year: 1921
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

General Physiographic Area: Rocky Mountain System
Physiographic Province: Northern Rocky Mountains
Physiographic Detail: Tobacco Root Mountains

Mineral Deposit Model

Not available

Orebody

Form: IRREGULAR

Structure

Type: R
Description: Bismark Fault Trends N45 To 50w, Dipping Near Vertical.

Type: L
Description: Post-Ore Faults, Up On East. Strawn Fault Trends N10e, 80w.

Alterations

Alteration Type: L
Alteration Text: Brecciation, Silicification, Oxidation

Rocks

Name: Basalt
Role: Associated
Age Type: Associated Rock
Age Young: Late Cretaceous

Name: Basalt
Role: Associated
Age Type: Associated Rock Unit
Age Young: Late Cretaceous

Name: Basalt
Role: Associated
Age Type: Host Rock
Age Young: Late Cambrian

Analytical Data

Not available

Materials

Gangue: Quartz
Gangue: Stibnite
Gangue: Hematite

Comments

Comment (Development): 5 - TON, 5 - STAMP MILL BUILT BY J. STRAWN, 1920'S. CONCENTRATION MILL, 2850 FT. AERIAL TRA, BUILT IN 1938.

Comment (Deposit): MAJOR VEIN DIPS 35 TO 50 DEGREES WEST, CONFORMING TO LIMESTONE BEDDING PLANES.

Comment (Workings): 4 ADIT LEVELS: 100, 200, 300, 400. 100 LEVEL HAS 20 FT. DRIFT, 200 - 200 FT. DRIFTS AND CROSSCUTS PLUS STOPES, 300 - 350 FT. DRIFTS AND CROSSCUTS, 2 WINZES; 10 AND 80 FT. 400 - 210 FT. DRIFTS, CROSSCUTS

Comment (Geology): THERE IS VIRTUALLY NO SULPHIDE MINERALIZATION-ALL VALUES ARE IN FREE GOLD. (LORAIN, 1937)

Comment (Deposit): 10 UNPATENTED CLAIMS, 2 MILLSITE CLAIMS. ACTIVE(1981). ; INFO.SRC : 1 PUB LIT; 3 FIELD OBSERV

References

Reference (Deposit): MBMG MEM 9, P. 38.

Reference (Deposit): USBM IC 6972, P. 70.

Reference (Deposit): REYNER, M.L., 1950, DIRECTORY OF MONTANA MINING PROPERTIES, 1949: MONTANA BUREAU OF MINES AND GEOLOGY MEMOIR 31, P. 71.

Reference (Deposit): REID, R.P., 1957, BEDROCK GEOLOGY OF THE NORTH END OF THE TOBACCO ROOT MOUNTAINS, MADISON COUNTY, MONTANA: MONTANA BUREAU OF MINES AND GEOLOGY MEMOIR 36, 25 P.

Reference (Deposit): HOGBERG, R.K., PRIVATE COMPANY REPORT, 1963

Reference (Deposit): 1957 GEOLMAP MBMG MEMOIR 36

Reference (Production): HOGBERG, 1963,PRIVATE CO. REPORT

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.