Croesus Mine

The Croesus Mine is a lead and silver mine located in Blaine county, Idaho at an elevation of 6,001 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: Croesus Mine

Commodity

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

Location

State: Idaho
County: Blaine
District: Mineral Hill 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

Not available

Workings

Type: Underground

Ownership

Not available

Production

Year: 1907
Time Period: 1885-1907
Material type: ORE
Description: Cp_Grade: ^$8 Au/Ton, 31.4 Oz Ag/Ton, 48-60% Pb

Deposit

Record Type: Site
Operation Category: Past Producer
Deposit Type: Vein
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: Sawtooth Mountains

Mineral Deposit Model

Not available

Orebody

Form: LENSES

Structure

Type: L
Description: Younger Lamprophyre Dikes Intrude Fracture Zone

Alterations

Alteration Type: L
Alteration Text: Sericitization, Oxidation

Rocks

Name: Diorite
Role: Associated
Age Type: Host Rock
Age Young: Late Cretaceous

Name: Diorite
Role: Associated
Age Type: Associated Rock
Age Young: Late Cretaceous

Analytical Data

Analytical Data: PB - AG ORE REPORTED TO CONTAIN 5 TO 20% PB, 1 OZ AG FOR EACH % OF PB, 0.25 - 0.35 OZ AU/TON, GOLD VEIN AVG. $65 IN AU + AG, WITH 2.5 OZ AU TO 15 OZ AG

Materials

Ore: Galena
Ore: Tetrahedrite
Ore: Chalcopyrite
Ore: Sphalerite
Gangue: Quartz
Gangue: Pyrite
Gangue: Calcite
Gangue: Pyrrhotite
Gangue: Siderite

Comments

Comment (Deposit): 2 VEINS. ONE GOLD, THE OTHER LEAD - SILVER. GOLD VEIN DIPS 70 DEG. S., THE LEAD - SILVER VEIN DIPS 65 DEG N.

Comment (Location): IN LOWER SCORPIAN GULCH

Comment (Commodity): SHIPPING ORE AVG $40 - $60/TON, MILLING ORE $10 - $12/TON

Comment (Development): 100 - TON MILL ERECTED IN 1908.

References

Reference (Deposit): 1910 COMPILE 11TH ANN. REPT. OF MINING INDUSTRY, 1909

Reference (Deposit): 1930 GEOLMAP J. B. UMPLEBY AND OTHERS, BULL. 814

Reference (Deposit): ANDERSON, A. L., AND OTHERS, 1950, DETAILED GEOLOGY OF CERTAIN AREAS IN THE MINERAL HILL AND WARM SPRINGS MINING DISTRICTS: IDAHO BUREAU OF MINES AND GEOLOGY PAMPHLET 90, 73 P.

Reference (Deposit): UMPLEBY, J. B. AND OTHERS, 1930, GEOLOGY AND ORE DEPOSITS OF THE WOOD RIVER REGION, IDAHO, WITH A DESCRIPTION OF THE MINNIE MOORE AND NEAR-BY MINES: USGS BULL. 814, P. 1-245.

Reference (Deposit): BELL, R. N., 1907, EIGHTH ANNUAL REPORT OF THE MINING INDUSTRY OF IDAHO FOR THE YEAR 1906.

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

Reference (Deposit): 1907 COMPILE 8TH ANN. REPT. OF MINING INDUSTRY, 1906

Reference (Deposit): 1949 GEOLMAP IDAHO BUREAU OF MINES AND GEOLOGY PAMPHLET 90

Reference (Production): ITEMS 7-11, UMPLEBY, J. B., AND OTHERS, 1930, USGS BULL. 814; ITEM 17, BELL, R. N., 1907, EIGHTH ANNUAL MINING REPORT.

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.