St. Joe Group Prospect

The St. Joe Group Prospect is a tungsten mine located in Park county, Colorado at an elevation of 9,301 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: St. Joe Group Prospect

Commodity

Primary: Tungsten

Location

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

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: Rocky Mountain Tungsten Corp.
Years: 1956 -

Production

Not available

Deposit

Record Type: Site
Operation Category: Occurrence
Deposit Type: Vein
Operation Type: Unknown
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

Form: LENSOID, TABULAR, PODS

Structure

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

Type: L
Description: Lake George Ring Dike Complex, W-Trending Fault

Alterations

Not available

Rocks

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

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

Name: Pegmatite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Neoproterozoic

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

Analytical Data

Analytical Data: SAMPLE FROM ZONE 4 LOW GRADE

Materials

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

Comments

Comment (Commodity): SCHEELITE OCCURS AS CRYSTALS, GRAINS, FLAKES, COATINGS

Comment (Location): ON NORTH SIDE OF US HWY 24 ; INFO FROM LAND.ST :1976

Comment (Workings): 1200-FT CROSSCUT ADIT, 3 SHALLOW SHAFTS, SURFACE CUTS

Comment (Geology): LIME-SILICATE BEDS CONTAINING SCHEELITE FOLLOW SCHISTOSITY OF METAMORPHICS; THERE ARE AT LEAST 4 BEDS OR ZONES CONTAINING SCHEELITE. ZONE 1 IS 528 FT FROM PORTAL OF ADIT, 223 FT BELOW SURFACE, FOLLOWING SOUTH SIDE OF 36-FT PEGMATITE DIKE. ZONE 2 IS 588 FT FROM PORTAL ABOUT MIDWAY BETWEEN 36-FT LONG PEGMATITE DIKE AND 16-FT DIKE FURTHER NORTH. ZONE 3 IS 608 FT FROM PORTAL, FOLLOWS NORTH SIDE 16-FT PEGMATITE DIKE. ZONE 4 IS 1030 FT FROM PORTAL, 6-FT WIDE, 350 FT BELOW SURFACE AND CONSISTS OF SCATTERED SCHEELITE IN SILICEOUS AND GARNETIFEROUS MICA SCHIST.

References

Reference (Deposit): BELSER, CARL, 1956, TUNGSTEN POTENTIAL IN CHAFFEE, FREMONT, GUNNISON, LAKE, LARIMER, PARK, AND SUMMIT COUNTIES, COLORADO: 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 DEGREE X 2 DEGREES QUADRANGLE, NORTH-CENTRAL COLORADO: USGS MAP I-1163, 1:250,000.

Colorado Mining Photos

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