R. H. Magnuson Mine

The R. H. Magnuson Mine is a feldspar and quartz mine located in Fremont county, Colorado at an elevation of 6,535 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

Name: R. H. Magnuson Mine  

State:  Colorado

County:  Fremont

Elevation: 6,535 Feet (1,992 Meters)

Commodity: Feldspar, Quartz

Lat, Long: 38.47139, -105.30056

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 R. H. Magnuson Mine

R. H. Magnuson Mine MRDS details

Site Name

Primary: R. H. Magnuson Mine
Secondary: Magnusson Crosscut


Commodity

Primary: Feldspar
Primary: Quartz
Secondary: Beryllium


Location

State: Colorado
County: Fremont
District: Eightmile Park Area


Land Status

Land ownership: BLM Administrative Area
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: Underground


Ownership

Owner Name: R. H. Magnuson


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

Model Name: Pegmatites


Orebody

Form: TABULAR


Structure

Type: R
Description: Northern Wet Mountains

Type: L
Description: Ne-Striking Faults


Alterations

Not available


Rocks

Name: Gneiss
Role: Host
Age Type: Host Rock Unit
Age Young: Mesoproterozoic
Age Old: Paleoproterozoic

Name: Gneiss
Role: Host
Age Type: Host Rock
Age Young: Mesoproterozoic
Age Old: Paleoproterozoic


Analytical Data

Not available


Materials

Ore: Microcline
Ore: Beryl
Ore: Quartz
Gangue: Garnet
Gangue: Tourmaline
Gangue: Biotite


Comments

Comment (Location): HALF MILE SOUTH OF MICA LODE MINE, NORTH OF ROYAL GORGE, SOUTHWEST OF MEYERS MINE, ON S SIDE OF E-TRENDING RIDGE ; INFO FROM LAND.ST :(1976) 01 (1976)

Comment (Workings): ADIT DRIVEN AT RIGHT ANGLE TO STRIKE

Comment (Geology): GEOL.DESC: E - STRIKING PEG.


References

Reference (Deposit): HANLEY, J.B., HEINRICH, E.W., AND PAGE, L.R., 1950, PEGMATITE INVESTIGATIONS IN COLORADO, WYOMING AND UTAH, 1942-1944, USGS PROFESSIONAL PAPER 227, P. 40.

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): HEINRICH, E.W., 1948, PEGMATITES OF EIGHT MILE PARK, FREMONT COUNTY, COLORADO: AMERICAN MINERALOGIST, V. 33, NOS. 7-10, P. 420-448, 550-587.

Reference (Deposit): CONSV. DIV. COMP. DATE, 1,64


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.