Grizzly King, Bobby, and Lost Claims

Past Producer in La Plata county in Colorado, United States with commodities Gold, Silver, Copper, Lead, Zinc
Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Public Land Survey System information
  6. Commodities
  7. Materials information
  8. Mineral occurrence model information
  9. Host and associated rocks
  10. Nearby scientific data
  11. Geologic structures
  12. Economic information about the deposit and operations
  13. Mining district
  14. Land status
  15. Links to other databases
  16. Bibliographic references
  17. Reporter information

Geologic information

Identification information

Deposit ID 10087908
MRDS ID D010745
Record type Site
Current site name Grizzly King, Bobby, and Lost Claims
Alternate or previous names Copper Queen and Lucky Claims

Geographic coordinates

Geographic coordinates: -107.51785, 37.5339 (WGS84)
Elevation 3078
Location accuracy 500(meters)
Relative position 20.3 MILES S 22 E FROM SILVERTON

Site location context

Political divisions (FIPS codes)

La Plata(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Columbine Pass(quadrangle 1:24,000 scale)

Silverton(quadrangle 1:100,000 scale)

Durango(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper San Juan(hydrologic unit)

Upper San Juan(hydrologic accounting unit)

San Juan(hydrologic subregion)

Upper Colorado(hydrologic region)

Federal lands

San Juan National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Weminuche Wilderness(Wilderness)

Wilderness FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States Colorado La Plata

Public Land Survey System information

Meridian Township Range Section Fraction State
New Mexico 038N 006W 23,26,27 Colorado

Commodities

Commodity Importance
Gold Primary
Silver Secondary
Copper Secondary
Lead Tertiary
Zinc Critical Tertiary

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Sphalerite Ore
Quartz Gangue

Analytical data

Result 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.

Mineral occurrence model information

Model code 85
USGS model code 22c
Deposit model name Polymetallic veins
Mark3 model number 46

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Schist
    Rock unit name Irving Formation
    Rock description Irving Formation
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic

Nearby scientific data

(1) -107.51785, 37.5339

Economic information

Geologic structures

Type of structure Regional
Structure description San Juan Uplift, San Juan Basin
Type of structure Local
Structure description Needle Mtns Uplift

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Year of last production 1936

Mining district

District name Vallecito Creek Area

Land status

Ownership category National Forest
Area name San Juan N. F.

Reference information

Bibliographic references

  • Deposit

    STEVEN, T.A., AND OTHERS, 1969, MINERAL RESOURCES OF THE SAN JUAN PRIMITIVE AREA, COLORADO: USGS BULL. 1261-F, P. 109-111

  • Production

    STEVEN AND OTHERS (1969, P. 111)

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1983 Schwochow, Stephen D. Colorado Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

Authoritative Colorado resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.