Joker Mine

The Joker Mine is a copper and silver mine located in Fremont county, Colorado 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: Joker Mine
Secondary: Rocky Mountain Boy Claims Patented Claims

Commodity

Primary: Copper
Primary: Silver
Secondary: Zinc
Secondary: Gold

Location

State: Colorado
County: Fremont
District: Grape Creek Area

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: Unknown

Ownership

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Prospect
Operation Type: Underground
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

General Physiographic Area: Interior Plains
Physiographic Province: Great Plains Province
Physiographic Section: Colorado Piedmont

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Type: R
Description: Northern Wet Mountains, Canon City Embayment, Thirtynine Mile Volcanic Field

Type: L
Description: Shaft On Shear Zone; E-W-Trending Fault; Near Webster Park Graben, Ilse Fault

Alterations

Alteration Type: L
Alteration Text: Altered Biotite Gneisses; Kaolinization

Rocks

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

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

Name: Quartz Monzonite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Paleoproterozoic

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

Analytical Data

Analytical Data: 70 PPM CR, 50 PPM N 1
Analytical Data: CU (0.03-0.53 %), AG (0.2-0.6 OZ/TON), ZN (0.02-0.38 %), PB 0.11%

Materials

Ore: Chalcopyrite
Gangue: Calcite
Gangue: Epidote
Gangue: Quartz
Gangue: Biotite
Gangue: Actinolite
Gangue: Garnet
Gangue: Plagioclase
Gangue: Pyrite

Comments

Comment (Location): SW FROM CANON CITY 4 MILES ON TEMPLE CANYON ROAD, THEN LEFT ONTO JEEP TRAIL FOR 2.5 MILES. THE WORKINGS ARE 400 FT DOWNHILL ; INFO FROM LAND.ST :(1976)

Comment (Workings): 3 SHORT ADITS, INCLINED SHAFT, 2 PROSPECT PITS; ADIT 1 IS 37 FT LONG, STRIKING N 27 W, CAVED AT FACE; ADIT 2 IS 45 FT LONG WITH FLOODED INCLINED WINZE; ADIT 3 CAVED AT PORTAL; SHAFT IS FLOODED 43 FT BELOW COLLAR; PIT 1 IS 5 X 5 X 6 FT DEEP; PIT 2 IS 6 X 5 X 6 FT DEEP;

References

Reference (Deposit): COKER, R. J., 1982, MINERAL RESOURCES OF THE ARKANSAS CANYON PLANNING UNIT WITH SPECIAL EMPHASIS ON THE FORMER GRAPE CREEK WILDERNESS STUDY AREAS AND THE MCINTYRE HILLS WILDERNESS STUDY AREA: US BLM MINERAL REPORT, P. 71-73

Reference (Deposit): TAYLOR, R. B., SCOTT, G. R., WOBUS, R. A., AND EPIS R. C., 1975, RECONNAISSANCE GEOLOGIC MAP OF THE ROYAL GORGE QUADRANGLE, FREMONT AND CUSTER COUNTIES, COLORAD; USGS MAP I-869, 1: 62,500.

Reference (Deposit): RAYMOND, W. H. AND SHERIDAN, D. M., 1980, DATA ON SOME STRATABOUND PRECAMBRIAN. DEPOSITS CONTAINING ZINC, COPPER, LEAD, SILVER AND GOLD IN THE ROYAL GORGE 15-MINUTE QUADRANGLE, COLORADO: USGS OFR 80-833, 8 P.

Colorado Mining Photos

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