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
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.
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
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