Missouri Mining Co., Ltd

The Missouri Mining Co., Ltd is a silver and lead mine located in Boise county, Idaho at an elevation of 3,999 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: Missouri Mining Co., Ltd

Commodity

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

Location

State: Idaho
County: Boise
District: Boise Basin ; Grimes Creek 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: Boise National Forest

Holdings

Not available

Workings

Type: Surface/Underground

Ownership

Owner Name: Missouri Mines, Inc.

Owner Name: Missouri Mining Co.

Production

Year: 1922
Material type: ORE
Description: Ap_Grade: ^11.3 % Pb, 1.3 % Zn, 1.11 Oz Au, 58.6 Oz Ag

Deposit

Record Type: Site
Operation Category: Producer
Operation Type: Unknown
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: Sawtooth Mountains

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Type: L
Description: Gouge

Alterations

Alteration Type: L
Alteration Text: Oxidized

Rocks

Name: Diorite
Role: Associated
Age Type: Host Rock
Age Young: Miocene

Name: Diorite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Miocene

Name: Diorite
Role: Associated
Age Type: Associated Rock
Age Young: Miocene

Analytical Data

Analytical Data: FROM 20 TONS: AU - 1.11 OZ, AG - 58.6 OZ, PB - 11.3%, ZN - 1.3%

Materials

Ore: Galena
Ore: Tetrahedrite
Ore: Sphalerite
Ore: Gold
Ore: Chalcopyrite
Gangue: Quartz
Gangue: Pyrite

Comments

Comment (Location): HEAD OF MUDDY CREEK

Comment (Commodity): SAME SHEARING AS GOLDEN AGE. TO THE SOUTHWEST, AURIFEROUS PYRITE IS FOUND.

Comment (Development): 525 ACRES

Comment (Deposit): 2 LODES, THE MISSOURI AND SILVER KING; THE MISSOURI TRENDS N 35 DEG E AND DIPS 70 DEG NW; SILVER KING TRENDS N 69 DEG E AND DIPS 65 DEG SE

Comment (Workings): ORIGINALLY LOCATED AS PLACER GROUND

Comment (Deposit): 6 - INCH GRAVEL STREAK ON BEDROCK PANNED COARSE GOLD.

References

Reference (Deposit): BALLARD, S. M., 1924, GEOLOGY AND GOLD DEPOSITS OF BOISE BASIN, BOISE COUNTY, IDAHO: IDAHO BUREAU OF MINES AND GEOLOGY BULL. 9, 103 P.

Reference (Deposit): ANDERSON, A. L., 1947 , GEOLOGY AND ORE DEPOSITS OF BOISE BASIN, IDAHO: USGS BULL. 944-C, P. 119 - 379

Reference (Production): BALLARD, S. M., 1974 , IDAHO BUREAU OF MINES AND GEOLOGY BULL. 9 ; ITEM P1 , ANDERSON, A. L., 1947 , USGS BULL. 944-C, P. 289

Reference (Deposit): IDAHO DEPT. OF LABOR AND INDUSTRIAL SERVICES, JULY 1974-JUNE 1975, FIRST ANNUAL REPORT ADDENDUM, 95 P.

Reference (Deposit): 1947 GEOLMAP ANDERSON, A.L., BULL. 944-C.

Reference (Deposit): 1924 GEOLMAP IDAHO BUR MINES BULL. 9

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.