The Grizzly King, Bobby, and Lost Claims is a gold mine located in La Plata county, Colorado at an elevation of 10,098 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: 10,098 Feet (3,078 Meters)
Commodity: Gold
Lat, Long: 37.53389, -107.51722
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.
Grizzly King, Bobby, and Lost Claims MRDS details
Site Name
Primary: Grizzly King, Bobby, and Lost Claims
Secondary: Copper Queen and Lucky Claims
Commodity
Primary: Gold
Secondary: Silver
Secondary: Copper
Tertiary: Lead
Tertiary: Zinc
Location
State: Colorado
County: La Plata
District: Vallecito Creek Area
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.
Administrative Organization: San Juan N. F.
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Deposit Type: Vein
Operation Type: Unknown
Year Last Production: 1936
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
Model Name: Polymetallic veins
Orebody
Not available
Structure
Type: R
Description: San Juan Uplift, San Juan Basin
Type: L
Description: Needle Mtns Uplift
Alterations
Not available
Rocks
Name: Schist
Role: Host
Age Type: Host Rock Unit
Age Young: Neoproterozoic
Name: Schist
Role: Host
Age Type: Host Rock
Age Young: Neoproterozoic
Analytical Data
Analytical Data: CHIP SAMPLE FROM FACE OF UPPER DRIFT CONTAINED 1.20 OZ/TON AU, 0.04 OZ/TON AG, 0.19% CU. CHIP SAMPLE FROM FIRST VEIN IN MIDDLE CUT CONTAINED 0.70 OZ/TON AU, 0.04 OZ/TON AG, 0.04% CU. CHIP SAMPLE FROM SECOND VEIN CONTAINED 0.40 OZ/TON AU, 1.14 OZ/TON AG, 0.60% CU, 0.26% PB, 0.08% ZN. SAMPLE FROM ADJOINING ROCK AND GOUGE CONTAINED 0.02 OZ/TON AU, 0.0 6 OZ/TON AG. 0.02% CU.
Materials
Ore: Chalcopyrite
Ore: Sphalerite
Ore: Galena
Gangue: Quartz
Comments
Not available
References
Reference (Deposit): STEVEN, T.A., AND OTHERS, 1969, MINERAL RESOURCES OF THE SAN JUAN PRIMITIVE AREA, COLORADO: USGS BULL. 1261-F, P. 109-111
Reference (Production): STEVEN AND OTHERS (1969, P. 111)
Colorado Mining Photos
Check out this collection of Colorado's best historic mining photos: Incredible Photos of Colorado Mining Scenes.
