Frenchy's Mine

The Frenchy's Mine is a copper mine located in Adams county, Idaho at an elevation of 5,499 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: Frenchy's Mine  

State:  Idaho

County:  Adams

Elevation: 5,499 Feet (1,676 Meters)

Primary Mineral: Copper

Lat, Long: 45.0953, -116.62420

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 Frenchy's Mine

Frenchy's Mine MRDS details

Site Name

Primary: Frenchy's Mine
Secondary: Trenchy's
Secondary: Great Eastern
Secondary: John D.
Secondary: Rocky Fellow
Secondary: Henry Ford


Commodity

Primary: Copper
Tertiary: Gold
Tertiary: Molybdenum
Tertiary: Silver


Location

State: Idaho
County: Adams
District: Seven Devils 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.
Administrative Organization: Payette National Forest


Holdings

Type: Located Claim


Workings

Type: Underground


Ownership

Not available


Production

Not available


Deposit

Record Type: Site
Operation Category: Past Producer
Deposit Type: Vein
Operation Type: Underground
Discovery Year: 1880
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: Seven Devils Mountains


Mineral Deposit Model

Not available


Orebody

Form: SHATTERED, BANDED, BUNCHES,


Structure

Type: L
Description: Gouge Seam


Alterations

Alteration Type: L
Alteration Text: Epidotization


Rocks

Name: Granite
Role: Host
Age Type: Host Rock
Age Young: Late Cretaceous

Name: Andesite
Role: Associated
Age Type: Associated Rock
Age Young: Late Triassic

Name: Andesite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Late Triassic

Name: Andesite
Role: Associated
Age Type: Host Rock
Age Young: Late Triassic


Analytical Data

Analytical Data: FS MIN EXAM 1957 PLUMB ASSAY 1957 BLACK AND DEASON SALT LAKE CITY


Materials

Ore: Molybdenite
Ore: Chalcopyrite
Ore: Gold
Ore: Quartz
Gangue: Calcite
Gangue: Iron
Gangue: Pyrite


Comments

Comment (Commodity): Sulfide Bunches Value $8 - $12/Ton.

Comment (Deposit): Great Eastern Vein Described Above; The John D. Vein Strikes N 40 Deg W And Dips Steeply Ne

Comment (Location): Bear Cr. Slope Of Smith Mt.

Comment (Development): 6 Unpatented Claims Worked Intermittently From 1881 - 1920.


References

Reference (Deposit): Livingston, D. C., And Laney, F. B., 1920, The Copper Deposits Of The Seven Devils And Adjacent Districts: Idaho Bureau Of Mines And Geology, Bulletin 1, P. 33 - 35

Reference (Deposit): 1920 Compile Idaho Bureau Of Mines And Geol., Bulletin

Reference (Production): Livingston, D. C., And Laney, F. B., 1920, Idaho Bureau Of Mines And Geology Bulletin 1, 105 P.

Reference (Deposit): V.E. Mitchell, Et. Al; Mines And Prospects Map Series, 1981, Grangeville Quad, Location No. 183


Idaho Gold

Where to Find Gold in Idaho

"Where to Find Gold in Idaho" looks at the density of modern placer mining claims along with historical gold mining locations and mining district descriptions to determine areas of high gold discovery potential in Idaho. Read more at Where to Find Gold in Idaho.