Copper Mtn Mine

The Copper Mtn Mine is a iron and copper mine located in Madison county, Montana at an elevation of 7,333 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: Copper Mtn Mine
Secondary: Dictator and Belle Union
Secondary: Ramshorn Mine

Commodity

Primary: Iron
Primary: Copper

Location

State: Montana
County: Madison
District: Sheridan (Ramshorn Creek) District

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

Not available

Ownership

Owner Name: F. And S Construct. Co.

Owner Name: Morrison - Knudsen Construct

Production

Not available

Deposit

Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Discovery Year: 1925
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N
Deposit Size: M

Physiography

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

Mineral Deposit Model

Not available

Orebody

Form: TABULAR

Structure

Type: L
Description: Some Nw (?) Faults Displace Bed At North End Of Deposit

Alterations

Alteration Type: L
Alteration Text: Minor Kaolinitization & Sericitization (?)

Rocks

Name: Iron Formation
Role: Host
Age Type: Host Rock
Age Young: Neoarchean

Name: Iron Formation
Role: Host
Age Type: Host Rock Unit
Age Young: Neoarchean

Analytical Data

Not available

Materials

Ore: Magnetite
Ore: Bornite
Ore: Chrysocolla
Ore: Malachite
Ore: Chalcocite
Ore: Copper
Gangue: Pyrite
Gangue: Quartz
Gangue: Garnet

Comments

Comment (Workings): OPEN PIT, 60 TO 100 X 100 X 10 FT, SEVERAL TRENCHES AND PITS, ONE 300 FT ADIT.

Comment (Geology): MAGNETITE, HEMATITE, AND LIMONITE COMPRISE THE ESSENTIAL FE MINERALS IN THE DEPOSIT. THE IRON HORIZON IS ON A STEEPLY EAST - DIPPING LIMB OF A DEEP SYNFORM

Comment (Deposit): Discovery Year: 1920'S

Comment (Commodity): 25 TO 30 PERCENT FE

Comment (Location): INFO FROM LAND.ST :(1978)

Comment (Reserve-Resource): THE PROPERTY WAS MAPPED AND CORE DRILLED BY F & S CONSTRUCTION CO. (NOW DEFUNCT)

Comment (Development): CU DISCOVERED IN 1920'S, FE IN 1957. LOCAL PROSPECT OR CLAIMED 50 ST CU ORE WERE SHIPPED IN WW2.

Comment (Deposit): CU DEPOSIT IS ALONG SCHIST/QUARTZITE CONTACT. FE DEPOSIT EXTENDS AT LEAST 1 MI.

References

Reference (Deposit): 1961 GEOLMAP H. L. JAMES & K. L. WEIR, GEOL. MAP (OPENFILE)

Reference (Deposit): 1967 COMPILE CARR GUILD & WRIGHT, PUBLISHED REPORT

Reference (Deposit): 1969 COMPILE MBMG, SUMMARY REPORT, UNPUBLISHED

Reference (Deposit): LEVANDOWSKI, D.W., 1956, GEOL OF SHERIDAN-ALDER AREAU OF MICH. PHD

Reference (Deposit): JAMES, H.L., AND WEIN, K.L., 1961, IRON DEPOSITS NEAR COPPER MOUNTAIN, MADISON COUNTY, MONTANA: U.S. GEOLOGICAL SURVEY OPEN-FILE REPORT.

Reference (Deposit): CARR, M.S., GUILD, P.W., & WRIGHT, W.B., 1967 , IRON IN THE UNITED STATES: USGS M.R. 51 WITH SECTION ON PREC IRON FORMATIONS IN U. S. BY BAYLEY R. W. & JAMES, H. L.

Reference (Deposit): BAYLEY, R. W., AND JAMES H. L., 1973 , PRECAMBRIAN IRON FORMATIONS OF THE U. S., ECON. GEOL. V. 68 , NO. 7

Reference (Deposit): MONTANA BUREAU OF MINES AND GEOLOGY, 1969, SUMMARY OF INFORMATION ON IRON ORE, BITUMINOUS COAL, FLUORITE, AND CHROMITE: MONTANA BUREAU OF MINES AND GEOLOGY UNPUBLISHED SUMMARY.

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.