Eight Mile Park District

The Eight Mile Park District is a mica, quartz, beryllium, and feldspar mine located in Fremont county, Colorado.

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

Name: Eight Mile Park District  

State:  Colorado

County:  Fremont

Elevation:

Commodity: Mica, Quartz, Beryllium, Feldspar

Lat, Long: 38.47444, -105.31583

Map: View on Google Maps

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.


Satelite image of the Eight Mile Park District

Eight Mile Park District MRDS details

Site Name

Primary: Eight Mile Park District


Commodity

Primary: Mica
Primary: Quartz
Primary: Beryllium
Primary: Feldspar
Secondary: Niobium (Columbium)
Secondary: Tantalum
Secondary: Bismuth


Location

State: Colorado
County: Fremont
District: Eight Mile Park District


Land Status

Not available


Holdings

Not available


Workings

Not available


Ownership

Not available


Production

Not available


Deposit

Record Type: District
Operation Category: Past Producer
Operation Type: Unknown
Years of Production:
Organization:
Significant:


Physiography

Not available


Mineral Deposit Model

Model Name: Pegmatites


Orebody

Not available


Structure

Not available


Alterations

Not available


Rocks

Name: Granodiorite
Role: Associated
Age Type: Associated Rock
Age Young: Paleoproterozoic

Name: Gneiss
Role: Associated
Age Type: Associated Rock
Age Young: Paleoproterozoic

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

Name: Pegmatite
Role: Associated
Age Type: Associated Rock
Age Young: Paleoproterozoic


Analytical Data

Not available


Materials

Ore: Muscovite
Ore: Beryl
Ore: Feldspar
Ore: Quartz
Trace: Garnet
Trace: Tantalite
Trace: Columbite
Unknown: Biotite
Unknown: Amblygonite
Unknown: Cleavelandite
Unknown: Lepidolite
Unknown: Magnetite
Trace: Tourmaline


Comments

Comment (Commodity): Eight Mile Park is one of the most productive pegmatite districts in Colorado. Mica Lode is the largest historic mine. Others: Meyers' mine, School Section mine, Border Feldspar No. 1 and No. 2, and R.H. Magnuson prospect.

Comment (Geology): Pegmatites trend N70E to E-W.

Comment (Location): South of U.S. Highway 50 near Royal Gorge. East of Canon City.

Comment (Production): The Mica Lode mine was the largest in the district and was the largest producer of feldspar in Colorado. It was also a producer of scrap mica and beryl (Hanley and others, 1950).


References

Reference (Deposit): Hanley, J.B., Heinrich, E.W., and Page, L.R., 1950, Pegmatite investigations in Colorado, Wyoming, and Utah, 1942-1944: U.S. Geological Survey Professional Paper 227, 123 p.

Reference (Deposit): Heinrich, E.W., 1948, Geologic map of Eight Mile Park, Fremont County, Colorado: American Mineralogist, v. 33, no. 7-8, Fig. 2.

Reference (Deposit): Martin, Clay M., 1993, Reconnaissance investigations of selected columbium and tantalum occurrences in Colorado: U.S. Bureau of Mines Open File Report 17-93, 103 p., appendices

Reference (Deposit): Argall, G.O. Jr., 1949, Industrial minerals of Colorado; Quarterly of the Colorado School of Mines, volume 44, No.2


Colorado Mining Photos

Placer mines at Cripple Creek, Colorado ca. 1892

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