Illinois Boy Mine

The Illinois Boy Mine is a gold and copper mine located in Hinsdale county, Colorado at an elevation of 11,959 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: Illinois Boy Mine
Secondary: Patented Claim: Illinois Boy
Secondary: Ms 7610

Commodity

Primary: Gold
Primary: Copper

Location

State: Colorado
County: Hinsdale
District: Park (Whitecross, Burrows Park, Adams) 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

Not available

Ownership

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Deposit Type: Vein
Operation Type: Unknown
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

General Physiographic Area: Rocky Mountain System
Physiographic Province: Southern Rocky Mountains

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Type: R
Description: San Juan Volcanic Field, San Juan Depression

Type: L
Description: San Juan-Uncompahgre Calderas, Lake City Caldera, Silverton Caldera, Eureka Graben

Alterations

Not available

Rocks

Name: Quartz Monzonite
Role: Associated
Age Type: Host Rock
Age Young: Neoproterozoic

Name: Quartz Monzonite
Role: Associated
Age Type: Associated Rock
Age Young: Miocene

Analytical Data

Not available

Materials

Ore: Chalcopyrite
Ore: Pyrite
Gangue: Calcite
Gangue: Quartz

Comments

Comment (Workings): 250-FT TUNNEL DRIVEN GENERALLY WEST OR NW.

Comment (Location): ILLINOIS BOY AND CONTIGUOUS CLAIMS EXTEND NE ALONG STEEP HILLSIDE NORTH OF WHITECROSS. ELEV AND LAT-LONG GIVEN ARE FOR POSSIBLE WORKINGS (IDENTIFIED FROM AIRPHOTOS) ON UNNAMED TRIBUTARY NORTH OF LAKE FORK GUNNISON RIVER AND BURROWS PARK ABOUT 0.6 MILE NNE OF WHITECROSS AND 1.5 MILE NNW OF WHITECROSS MTN. (UNSURVEYED SECTION). ; INFO FROM LAND.ST :1977

Comment (Deposit): VEIN APPEARS TO BE DEVELOPED IN NE EXTENSION OF TWO FAULTS FROM CLEVELAND TUNNEL WORKINGS. FAULTS TREND GENERALLY N 55 E. WEST OF MINE, LIPMAN'S MAP SHOWS FAULTS CUTTING NW-TRENDING CAMBRO-ORDOVICIAN DIABASE DIKE, BUT KRASOWSKI'S MAP SHOWS A NNW-TRENDING DIABASE DIKE TRUNCATED BY NORTHERN OF TWO FAULTS.

References

Reference (Deposit): KRASOWSKI, D.J., 1976, GEOLOGY AND ORE DEPOSITS OF BURROWS PARK, HINSDALE COUNTY, COLORADO: COLORADO STATE UNIV. M.SC. THESIS, 111 P.

Reference (Deposit): BLM MINERAL SURVEY MS 7610

Reference (Deposit): WOOLSEY, L.H., 1907, LAKE FORK EXTENSION OF THE SILVERTON MINING AREA, COLORADO: USGS BULL. 315, P. 26-30.

Reference (Deposit): LIPMAN, P.W., 1976, GEOLOGIC MAP OF THE LAKE CITY CALDERA AREA, WESTERN SAN JUAN MOUNTAINS, SOUTHWESTERN COLORADO: USGS MAP I-962.

Reference (Deposit): BROWN, W.H., 1926, THE MINERAL ZONES OF THE WHITE CROSS DISTRICT AND NEIGHBORING DEPOSITS IN HINSDALE COUNTY, COLORADO: MINES MAG., V. 15, NO. 11, P. 5-15.

Colorado Mining Photos

Check out this collection of Colorado's best historic mining photos: Incredible Photos of Colorado Mining Scenes.