Pacific Mine

The Pacific Mine is a fluorine-fluorite, silver, and lead mine located in Custer county, Idaho at an elevation of 7,799 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: Pacific Mine
Secondary: One of Mc Gregor Group
Secondary: Salmon River Group
Secondary: Silver Brick
Secondary: Blain
Secondary: Gleenland
Secondary: Bayhorse
Secondary: Dave
Secondary: Hoosier
Secondary: Beardsley
Secondary: Democrat
Secondary: Grant
Secondary: Jackson
Secondary: Jefferson
Secondary: Little Fellow
Secondary: W.T. Sherman
Secondary: Beardsley Ext.
Secondary: Lincoln
Secondary: Keno
Secondary: Pacific Fluorspar Deposit

Commodity

Primary: Fluorine-Fluorite
Primary: Silver
Primary: Lead
Secondary: Zinc
Tertiary: Gold
Tertiary: Copper

Location

State: Idaho
County: Custer
District: Bayhorse 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

Type: Private Lease
Type: Located Claim
Type: Patented

Workings

Type: Underground

Ownership

Owner Name: N. L. Industries

Production

Year: 1908
Time Period: 1901-1908
Material type: ORE
Description: Cp_Grade: ^2 Oz Ag/Unit Pb, Au, Cu, Zn, 10 - 50 % Pb

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Underground
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: Salmon River Mountains

Mineral Deposit Model

Not available

Orebody

Form: PODS

Structure

Type: R
Description: Bayhorse Anticline

Alterations

Alteration Type: L
Alteration: MODERATE SILICIFICATION

Rocks

Name: Limestone
Role: Host
Age Type: Host Rock
Age Young: Late Cambrian

Name: Limestone
Role: Host
Age Type: Host Rock Unit
Age Young: Late Cambrian

Analytical Data

Analytical Data: ANALYSIS OF HAND-PICKED MATERIAL: 50 - 60 % PB, 60 - 80 OZ AG/TON, 2 - 3 % ZN
Analytical Data: SOME SAMPLES: 30 - 60 % CAF2

Materials

Ore: Fluorite
Ore: Galena
Gangue: Quartz

Comments

Comment (Workings): 2 Tunnels

Comment (Production): Value $65000

Comment (Development): Mine Now Open For Fluorspar

References

Reference (Deposit): 1974 Compile 71st Ann. State Mine Inspector'S Rept., 1973

Reference (Production): Ross, C. P., 1937, Geology And Ore Deposits Of The Bayhorse Region, Custer County, Idaho: USGS Bulletin 877, 161 P., P. 130.

Reference (Deposit): Hodges, In Preparation, Ms Thesis Oregon St Univ, Corvallis, Oregon

Reference (Deposit): Hobbs Hays & Mcintyre 1975 USGS Op-File Rept 23p.

Reference (Deposit): Mcilroy & Others 1974 USBM Ic 8646, 60 P.

Reference (Deposit): Batty, J.V., H.D. Snedden, G.M. Potter, And Bik. Shibler.

Reference (Deposit): Shawe & Others 1976 USGS Prof Paper 933 P 35-38

Reference (Deposit): Bumines. Availability Of U.S. Primary Lead Resources, Ic-8646, 1974, 60 Pp.

Reference (Deposit): Concentration Of Fluorite Ores From Az, Ca, Id, Mt, Nv, And Wy. Bumines Ri 4133, Nov, 1947, 28 Pp.

Reference (Deposit): BLM. White Cloud Peaks Idaho, 1:250000 Scale Map, Surface-Minerals Management Status, 1979.

Reference (Deposit): Hobbs, S.W., Structural And Stratigraphic Controls Of Ore Deposits In The Bayhorse Area, Idaho. USGS Bulletin 1658 A-S, Pp. 134-140.

Reference (Deposit): Anderson 1954 Id Bur Mines And Geol Pamph 101, P 13

Reference (Deposit): Chambers 1966 Phd Dissertation, Univ Of Ariz, Tucson, Ariz

Reference (Deposit): Umpleby, J. B., 1913, Some Ore Deposits In Northwestern Custer County, Idaho: USGS Bulletin 539, 104 P.

Reference (Deposit): Ross, C. P., 1937, Geology And Ore Deposits Of The Bayhorse Region, Custer County, Idaho: USGS Bulletin 877, 161 P.

Reference (Deposit): 1913 Geolmap Umpleby, J. B., Bulletin 539

Reference (Deposit): 1937 Geolmap Ross, C. P., Bulletin 877

Reference (Deposit): Snyder, K.D. Geology Of The Bayhorse Fluorite Deposit, Custer Co., Id, Econ. Geol. V. 73, 1978, Pp. 207-214.

Reference (Deposit): Griner, W. C., 1974, Seventy - First Annual Report Of The Mining Industry Of Idaho For The Year 1973 - 1974, 98 P.

Reference (Deposit): Kauffman, J.D. Description And Evaluation Of The Pacific Property, Custer Co., Idaho. USBM Grant G0264004, Jan., 1977, 9 Pp.

Idaho Gold

"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: Where to Find Gold in Idaho.