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
Elevation:
Commodity: Mica, Quartz, Beryllium, Feldspar
Lat, Long: 38.47444, -105.31583
Map: View on Google Maps
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
Check out this collection of Colorado's best historic mining photos: Incredible Photos of Colorado Mining Scenes.
