Twin Peaks Mine

The Twin Peaks Mine is a copper and lead mine located in Lemhi county, Idaho at an elevation of 5,840 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

Name: Twin Peaks Mine  

State:  Idaho

County:  Lemhi

Elevation: 5,840 Feet (1,780 Meters)

Commodity: Copper, Lead

Lat, Long: 44.95417, -114.00556

Map: View on Google Maps

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.


Satelite image of the Twin Peaks Mine

Twin Peaks Mine MRDS details

Site Name

Primary: Twin Peaks Mine
Secondary: Kapp
Secondary: Spair Time Mine
Secondary: Rattlesnake
Secondary: North Copper Group
Secondary: Spare Time Group
Secondary: Spare Tire
Secondary: Golden Copper


Commodity

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


Location

State: Idaho
County: Lemhi
District: Unorganized District; Deer Creek Area


Land Status

Land ownership: BLM Administrative Area
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: Located Claim


Workings

Type: Underground


Ownership

Owner Name: Idaho Consolidated Mines
Percent: 100.0
Home Office: Idaho
Info Year: 1978


Production

Year: 1936
Time Period: 1935-1936
Material type: ORE
Description: Cp_Grade: ^14 % Cu
Year: 1929
Time Period: 1928-1929
Material type: ORE
Description: Cp_Grade: ^12 % Cu, 9 Oz Ag/T, $2.00 Au/T


Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Underground
Discovery Year: 1927
Discovery Method: Ore-Mineral Not In Place
Years of Production:
Organization:
Significant: N
Deposit Size: S


Physiography

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


Mineral Deposit Model

Not available


Orebody

Form: BLEB, STRINGER, PODS


Structure

Not available


Alterations

Alteration Type: L
Alteration: Silicification

Alteration Type: L
Alteration: Chlorite

Alteration Type: L
Alteration: Oxidation


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

Not available


Materials

Ore: Galena
Ore: Chalcopyrite
Ore: Malachite
Ore: Cuprite
Ore: Copper
Gangue: Biotite
Gangue: Chalcedony
Gangue: Tourmaline
Gangue: Hematite
Gangue: Pyrite
Gangue: Quartz


Comments

Comment (Development): 22 Unpatented Claims; 1954 100-Ton/Day Flotation Mill

Comment (Deposit): Discovery Year: 1927 CU; 1938 PB

Comment (Production): Property Worked Intermittently From 1938-1964.

Comment (Deposit): Mine Worked For Cu Prior To 1938, Then For Lead Until 1961 When Increased Copper Prices Warranted A Return To Copper Mining

Comment (Workings): Assessment Work Presently

Comment (Geology): Fractures Ave. Strike N 20 Deg E And Dip 37 - 73 Deg W

Comment (Geology): Original alteration entry: Local - Oxidation, Chlorite , Silicification

Comment (Geology): Original ore control entry: Fissures, Fractures


References

Reference (Deposit): Landreth, J. O., 1964, Geology Of The Rattlesnake Creek Area, Lemhi County, Idaho: Moscow, Idaho, Univ. Of Idaho M.S. Thesis, 49 P.

Reference (Deposit): Campbell, A., 1947, Forty-Eighth Annual Report Of The Mining Industry Of Idaho For The Year 1946.

Reference (Deposit): Idaho Dept. Of Labor And Industrial Services, 1975, First Annual Report, Addendum, 95 P.

Reference (Production): (Items 8 And 9) Landreth, J.O., 1964, Univ. Of Idaho Ms Thesis, P. 45; (Item 1) Campbell, A., 1947, 48th Annual Report, P. 241.

Reference (Deposit): Starr, R. B., 1955 Cornell University, Ms Thesis.


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