January Mine

The January Mine is a gold and silver mine located in Broadwater county, Montana at an elevation of 5,961 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: January Mine

Commodity

Primary: Gold
Primary: Silver
Secondary: Lead
Secondary: Zinc
Secondary: Copper

Location

State: Montana
County: Broadwater
District: Winston 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: January Mining Co.
Home Office: Box 877, Helena Mont. 59601

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1906
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

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

Mineral Deposit Model

Not available

Orebody

Form: VEIN FILLING

Structure

Type: R
Description: Boulder Batholith, Lombard Overthrust

Type: L
Description: Vein Is Zone Of Shearing Containing Blocks Of Country Rock Along Fault Fissure

Alterations

Alteration Type: L
Alteration Text: Vein Continues Into Altered Andesite

Rocks

Name: Volcanic Rock (Aphanitic)
Role: Associated
Age Type: Host Rock
Age Young: Late Cretaceous

Name: Volcanic Rock (Aphanitic)
Role: Associated
Age Type: Associated Rock
Age Young: Late Cretaceous

Analytical Data

Not available

Materials

Ore: Galena
Ore: Tetrahedrite
Gangue: Rhodochrosite
Gangue: Pyrolusite

Comments

Comment (Deposit): THE QUOTED DIP IS THAT FOUND ON THE UPPER (6 LEVEL) THE DIP FLATTENS SOMEWHAT ON THE LOWER (3 LEVEL) TO APPROXIMATELY 40 DEGREES NORTH

Comment (Workings): LOWER WORKINGS (1 AND 2 LEVEL) INACCESIBLE

Comment (Geology): NO INFORMATION ON TYPE OF ALTERATION IN ANDESITE. THERE ARE ACTUALLY 3 VEINS ASSOCIATED WITH THE JANUARY MINE, THE JANUARY VEIN, THE MONTANA IDAHO VEIN AND ONE UNNAMED VEIN. THE MONTANA-IDAHO VEIN CONTAINS ABUNDANT ARSENOPYRITE AND PYRITE WITH LITTLE GALENA OR SPHALERITE.

Comment (Development): 1906 WAS THE YEAR OF PRODUCTION AS FIRST RECORDED PRODUCTION FIGURES NOT RECORDED PRIOR TO THAT

Comment (Deposit): THE PRODUCTION FIGURES QUOTED REFLECT THE JANUARY MINE AS THE MAJOR PRODUCER WITH FIGURES FROM AT LEAST 2 OTHER MINES ADDED.

References

Reference (Deposit): EARLL, F. N., 1964, ECONOMIC GEOLOGY AND GEOCHEMICAL STUDY OF WINSTON MINING DISTRICT, BROADWATER COUNTY, MONTANA, MONT. BUREAU OF MINES AND GEOL. BULL. 41, P. 17-18, 44-46.

Reference (Deposit): KLEPPER, M. R., RUPPEL, E. T., FREEMAN, V. L., WEEKS, R. A., 1971, GEOLOGY AND MINERAL DEPOSITS, EAST FLANK OF THE ELKHORN MOUNTAINS, BROADWATER COUNTY, MONTANA, US GEOLOGICAL SURVEY PROF. PAPER 665 P. 41

Reference (Production): EARLL, F. N., 1964, WINSTON MINING DISTRICT

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.