Muldoon Mine

The Muldoon Mine is a lead and silver mine located in Blaine county, Idaho at an elevation of 7,598 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: Muldoon Mine

Commodity

Primary: Lead
Primary: Silver
Tertiary: Copper
Tertiary: Zinc

Location

State: Idaho
County: Blaine
District: Little Wood River 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: Sawtooth National Forest

Holdings

Not available

Workings

Type: Underground

Ownership

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Discovery Year: 1881
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: Pioneer Mountains

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Not available

Alterations

Alteration Type: L
Alteration Text: Sericitization

Rocks

Name: Quartz Monzonite
Role: Associated
Age Type: Host Rock Unit
Age Young: Early Permian

Analytical Data

Analytical Data: AT SURFACE ORE REPORTED TO CONTAIN 70% PB
Analytical Data: ORE ON LEVEL 5 CONTAINED 50-60% PB, 45 OZ AG/TON

Materials

Ore: Chalcopyrite
Ore: Sphalerite
Gangue: Pyrite
Gangue: Feldspar
Gangue: Quartz

Comments

Comment (Workings): 5 LEVELS WITH SEVERAL THOUSAND FT OF DRIFTS AND CROSSCUTS

Comment (Deposit): DEPOSIT TRENDS N 8-45 DEG W AND DIPS 23-40 DEG NE

Comment (Location): ON W SIDE OF CANYON OF MULDOON CREEK LESS THAN 3 MI ABOVE CANYON'S MOUTH AT ALTITUDE 6800-8000 FT

Comment (Production): $200,000 PRODUCTION FOR ITEM 8, ITEM 9 IN LATER YEARS; ITEM 17 WAS SEVERAL HUNDRED TONS; ITEM 8 GRADE FROM UMPLEBY (1917)

References

Reference (Deposit): ANDERSON, A. L., AND WAGNER, W. R., 1946, A GEOLOGICAL RECONNAISSANCE IN THE LITTLE WOOD RIVER (MULDOON) DISTRICT, BLAINE COUNTY, IDAHO: IDAHO BUREAU OF MINES AND GEOLOGY PAMPHLET 75, 22 P.

Reference (Deposit): UMPLEBY, J. B., 1917, GEOLOGY AND ORE DEPOSITS OF THE MACKAY REGION, IDAHO: USGS PROF. PAPER 97, 129 P.

Reference (Deposit): NELSON, W. H., AND ROSS, C. P., 1968, GEOLOGY OF PART OF THE ALDER CREEK MINING DISTRICT, CUSTER COUNTY, IDAHO: USGS BULL. 1252-A, 30 P.

Reference (Deposit): MOORE, F. C., 1910, ELEVENTH ANNUAL REPORT OF THE MINING INDUSTRY OF IDAHO FOR THE YEAR 1909.

Reference (Deposit): 1946 RECON IDAHO BUREAU OF MINES AND GEOLOGY PAMPHLET 75

Reference (Deposit): 1968 GEOLMAP NELSON, W. H. AND ROSS, C. P., BULL. 1252-A

Reference (Production): ANDERSON, A. L., AND WAGNER, W. R., 1946, IDAHO BUREAU OF MINES AND GEOLOGY PAMPHLET 75

Reference (Deposit): 1910 COMPILE STATE MINE INSPECTOR'S REPORT FOR 1909

Reference (Deposit): 1917 GEOLMAP UMPLEBY, J. B., PROF. PAPER 97

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.