Star Girl Mine

The Star Girl Mine is a mica and feldspar mine located in Park county, Colorado at an elevation of 9,249 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: Star Girl Mine
Secondary: Colorado Feldspar Company Mine

Commodity

Primary: Mica
Primary: Feldspar
Tertiary: Beryllium

Location

State: Colorado
County: Park
District: Micanite 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: Unknown

Ownership

Owner Name: Colorado Feldspar Co.
Home Office: Canon City, Co.
Years: 1979 -

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1950
Discovery Year: 1950
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: Southern Front Range, Thirtynine Mile Volcanic Field

Alterations

Not available

Rocks

Name: Diorite
Role: Associated
Age Type: Associated Rock
Age Young: Neoproterozoic

Name: Diorite
Role: Associated
Age Type: Host Rock Unit
Age Young: Neoproterozoic

Name: Diorite
Role: Associated
Age Type: Host Rock
Age Young: Neoproterozoic

Analytical Data

Not available

Materials

Ore: Muscovite
Ore: Microcline
Ore: Beryl
Gangue: Garnet
Gangue: Apatite
Gangue: Biotite

Comments

Comment (Deposit): 3 ZONES: WALL ZONE IS QTZ-MICROCLINE-PLAGIOCLASE-MUSCOVITE PEGMATITE, INTERMEDIATE ZONE IS THIN, DISCONTINUOUS QUARTZ-PLAGIOCLASE-MUSCOVITE PEGMATITE, CORE IS QUARTZ-MICROCLINE PEGMATITE; BORDER ZONE IN SOME PLACES

Comment (Reserve-Resource): ESTIMATED TO BE ONLY A FEW HUNDRED TONS EACH OF SCRAP MICA AND MICROCLINE AS RESERVES (1950)

Comment (Location): INFO FROM LAND.ST :(1976)

Comment (Workings): INCLINED SHAFT AT LEAST 30-FT DEEP, 2 LEVELS OF DRIFTS, (ONE AT 15-FT, OTHER AT 30 FT); OPEN CUT 60X50X30 FT DEEP

References

Reference (Deposit): HANLEY, J. B., HEINRICH, E. W., PAGE, L. R., 1950, PEGMATITE INVESTIGATIONS IN COLORADO, WYOMING, AND UTAH, 1942-1944: USGS PROFESSIONAL PAPER 227, P. 42-55

Reference (Deposit): WOBUS, R. A., EPIS, R. C. AND SCOTT, G. R., 1979, GEOLOGIC MAP OF THE COVER MOUNTAIN QUADRANGLE, FREMONT, PARK, AND TELLER COUNTIES, COLORADO: USGS MAP I-1179, 1:62,500.

Colorado Mining Photos

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