Chicago Mine

The Chicago Mine is a silver and copper mine located in Blaine county, Idaho at an elevation of 6,201 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: Chicago Mine
Secondary: Bellevue King

Commodity

Primary: Silver
Primary: 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

Owner Name: Mike Brown

Production

Not available

Deposit

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

Form: PATCHES, IRREGULAR

Structure

Type: L
Description: Fault Striking N 42 Deg E And Dipping 75 - 85 Deg. N.W. Of Mio Age; The Ne Trending Faults Cut The Veins

Alterations

Alteration Type: L
Alteration Text: Sericite, Chlorite

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

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

Analytical Data

Analytical Data: 1,184 OZ. AG/TON.
Analytical Data: ONE SPECIMEN CONTAINED 13.6% CU

Materials

Ore: Chalcopyrite
Gangue: Siderite
Gangue: Pyrite
Gangue: Calcite
Gangue: Mica
Gangue: Feldspar
Gangue: Quartz
Gangue: Hornblende

Comments

Comment (Deposit): 2 VEINS. VEIN 1 IS DESCRIBED ABOVE; VEIN 2 STRIKES W. AND DIPS 75 DEG N.

Comment (Workings): COMPRISED OF MANY TUNNELS, ONE OPEN AND ANOTHER PARTLY OPEN.

Comment (Location): S SIDE OF LEE GULCH

References

Reference (Deposit): 1949 GEOLMAP IDAHO BUREAU OF MINES & GEOL. PAMPHLET 90

Reference (Production): ANDERSON, A. L., AND OTHERS, 1949, IDAHO BUREAU OF MINES AND GEOLOGY PAMPHLET 90

Reference (Deposit): ANDERSON, A. L., AND OTHERS, 1950, DETAILED GEOLOGY OF CERTAIN AREAS IN THE MINERAL HILL AND WARM SPRINGS DISTRICTS: IDAHO BUREAU OF MINES AND GEOLOGY PAMPHLET 90, P. 32 - 33

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): 1930 GEOLMAP HEWETT, D. F., BULL. 814

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.