Copper Girl

The Copper Girl is a copper mine located in Fremont county, Colorado at an elevation of 7,680 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: Copper Girl
Secondary: Patented Claims: Valley View
Secondary: Copper Girl 1906

Commodity

Primary: Copper
Secondary: Silver
Tertiary: Molybdenum

Location

State: Colorado
County: Fremont
District: Greenhorn District, Copper Gulch 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: Surface/Underground

Ownership

Owner Name: Green Horn Mountain Copper Mining Co.
Home Office: Ralph Fairchild, Pres. Canon City, Co.
Years: 1919 -

Production

Year: 1915
Time Period: 1915-1917
Mined: 73.000 mt
Description: Ap_Grade: ^Avg 1915-1917: 9.14% Cu, 0.83 Oz/Ton Ag

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Underground
Year First Production: 1915
Year Last Production: 1917
Discovery Year: 1906
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

Model Name: Stratabound Precambrian sulfide, Colorado and Wyoming

Orebody

Not available

Structure

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

Type: L
Description: Goat Park Fault (Ne-Trending), Ilse Fault

Alterations

Alteration Type: L
Alteration: kaolinite
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 Unit
Age Young: Paleoproterozoic

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

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

Analytical Data

Analytical Data: CU (0.17-9.7%, AVG %), AG (0.2-0.7 OZ/TON), MO (3.7-4.3%), ZN (.01-0.1%)

Materials

Ore: Molybdenite
Ore: Chalcopyrite
Ore: Bornite
Ore: Malachite
Ore: Silver
Gangue: Schist
Gangue: Quartz

Comments

Comment (Deposit): MOLYBDENUM OCCURS BETWEEN CHALCOPYRITE BANDS OF COPPER DEPOSIT

Comment (Location): SOUTH FROM PARKDALE ON COPPER GULCH ROAD 7 MILES, THEN LEFT DOWN THE GOAT PARK DRAINAGE TO FIRST FORK. COMPLEX IS 0.5 MILE WALK UP THE NORTH FORK ; INFO FROM LAND.ST :(1976)

Comment (Commodity): IN 1919 IT WAS FELT THAT ORE GRADES OF CU AND MO WERE INCREASING WITH DEPTH; COPPER PRIMARILY IN SCHISTS

Comment (Workings): 3 ADITS, ONE PIT, CAVED SHAFT; PIT IS CIRCULAR, 19 FT DIAM, 10 FT DEEP, LIES AT PORTAL OF ADIT 3; ADIT 1 INCLINED DOWNSLOPE 148 FT, WITH 3 STOPES LEFT, 2 RIGHT; 82 FT FROM PORTAL OF ADIT 1 IS OVERHAND STOPE RUNNING TO SURFACE, INTERSECTING INCLINED ADIT 2

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. 39-43

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, COLORADO: USGS MAP I-869, 1: 62,500.

Reference (Deposit): WORCESTER, P. G., 1919, MOLYBDENUM DEPOSITS OF COLORADO, WITH GENERAL NOTES ON THE MOLYBDENUM INDUSTRY: CGS BULLETIN 14, P. 55-57.

Reference (Production): COKER, 1982

Colorado Mining Photos

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