Round Mountain Group

The Round Mountain Group is a tungsten mine located in Park county, Colorado at an elevation of 8,599 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: Round Mountain Group  

State:  Colorado

County:  Park

Elevation: 8,599 Feet (2,621 Meters)

Commodity: Tungsten

Lat, Long: 39.04056, -105.43944

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 Round Mountain Group

Round Mountain Group MRDS details

Site Name

Primary: Round Mountain Group


Commodity

Primary: Tungsten


Location

State: Colorado
County: Park
District: Tarryall Springs District (Puma City)


Land Status

Land ownership: National Forest
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: D. W. Denny
Years: 1960 -

Owner Name: Sandusky
Years: 1951 -


Production

Year: 1945
Time Period: 1941-1945


Deposit

Record Type: Site
Operation Category: Past Producer
Deposit Type: Vein
Operation Type: Unknown
Discovery Year: 1943
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

Form: LENSOID, TABULAR, PODS


Structure

Type: R
Description: South Park, Front Range, Tarryall Mountains, Puma Hills

Type: L
Description: Nw-Trending Faults


Alterations

Not available


Rocks

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

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

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


Analytical Data

Analytical Data: 0.60% WO3 IN 20-FT SHAFT


Materials

Ore: Scheelite
Gangue: Clinozoisite
Gangue: Epidote
Gangue: Vesuvianite
Gangue: Garnet
Gangue: Wollastonite


Comments

Comment (Workings): PITS, TRENCHES, SHALLOW SHAFTS 10-27 FT DEEP

Comment (Commodity): SCHEELITE FOLLOWS SCHIST BEDDING; OCCURS AS CRYSTALS, GRAINS, FLAKES, COATINGS

Comment (Production): SHIPPED TO SALIDA STOCKPILE

Comment (Location): ABOUT 6 MILES NW OF LAKE GEORGE, 1 MILE N OF HWY 24; EAST OF ROUND MOUNTAIN ; INFO FROM LAND.ST :1976


References

Reference (Deposit): COLORADO METAL MINING FUND BOARD, 1960, TUNGSTEN MINES OF COLORADO: COLORADO METAL MINING FUND BOARD, P. 66

Reference (Deposit): BELSER, CARL, 1956, TUNGSTEN POTENTIAL IN CHAFFEE, FREMONT, GUNNISON, LAKE LARIMER, PARK, AND SUMMIT COUNTIES, COLOARDO: USBM INFORMATION CIRCULAR 7748, P. 19-26.

Reference (Deposit): HEINRICH, E.W., 1981, PRECAMBRIAN TUNGSTEN AND COPPER-ZINC SKARN DEPOSITS OF SOUTH-CENTRAL COLORADO: CGS RESOURCE SERIES 21, 115 P.

Reference (Deposit): BRYANT, BRUCE, MCGREW, L.W. AND WOBUS, R.A., 1981, GEOLOGIC MAP OF THE DENVER 1 DEGREES X 2 DEGREES QUADRANGLE, NORTH-CENTRAL COLORADO: USGS MAP I-1163, 1:250,000.

Reference (Production): BELSER, (1956)


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.