Robinson Gulch Prospect

The Robinson Gulch Prospect is a beryllium, feldspar, and mica mine located in Jefferson county, Colorado at an elevation of 7,749 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: Robinson Gulch Prospect  

State:  Colorado

County:  Jefferson

Elevation: 7,749 Feet (2,362 Meters)

Commodity: Beryllium, Feldspar, Mica

Lat, Long: 39.78861, -105.34806

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 Robinson Gulch Prospect

Robinson Gulch Prospect MRDS details

Site Name

Primary: Robinson Gulch Prospect


Commodity

Primary: Beryllium
Primary: Feldspar
Primary: Mica


Location

State: Colorado
County: Jefferson
District: Clear Creek Pegmatite Province


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

Not available


Ownership

Not available


Production

Not available


Deposit

Record Type: Site
Operation Category: Occurrence
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

Not available


Structure

Type: R
Description: Front Range Uplift, Denver Basin

Type: L
Description: Junction Ranch Fault Zone


Alterations

Not available


Rocks

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: Associated Rock
Age Young: Neoproterozoic


Analytical Data

Not available


Materials

Ore: Muscovite
Ore: Chrysoberyl
Gangue: Quartz


Comments

Comment (Location): NEAR CONFLUENCE OF ROBINSON GULCH AND UY GULCH ; INFO FROM LAND.ST :(1975)

Comment (Workings): OPEN CUTS

Comment (Deposit): SMALL UNZONED PEGMATITE IN INTERLAYERED AMPHIBOLITE AND BIOTITE-PLAGIOCLASE-QUARTZ GNEISS. CHRYSOBERYL WAS FOUND BUT IN PLACE


References

Reference (Deposit): HANLEY, J.B., AND OTHERS, 1950, PEGMATITE INVESTIGATIONS IN COLORADO, WYOMING, AND UTAH, 1942-44: USGS PROF. PAPER 227, P. 85.

Reference (Deposit): USGS COMMODITY FILE: GRP III, REEL 32, 1944; GR III, REEL 40, 1943; GR II, REEL 12, DOC. 2701, 1946 (FROM ORIGINAL CRIB RECORD)

Reference (Deposit): SHERIDAN, D,M,M AND OTHERS, 1967, GEOLOGY AND URANIUM DEPOSITS OF THE RALSTON BUTTES DISTRICT, JEFFERSON COUNTY, COLORADO: USGS PROF. PAPER 520 (INCLUDES GEOLOGIC MAP OF RALSTON BUTTES QUAD).


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.