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  3. Mineral Resource Data System (MRDS)

Unnamed Prospect

Occurrence in La Plata county in Colorado, United States with commodities Silver, Lead, Zinc, Copper, Gold
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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. Alteration
  9. Mineral occurrence model information
  10. Host and associated rocks
  11. Nearby scientific data
  12. Geologic structures
  13. Controls for ore emplacement
  14. Economic information about the deposit and operations
  15. Mining district
  16. Land status
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10014202
MRDS ID D010871
Record type Site
Current site name Unnamed Prospect

Geographic coordinates

Geographic coordinates: -107.80897, 37.61973 (WGS84)
Elevation 2731
Location accuracy 250(meters)
Relative position 14.9 MILES S 32 W 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

Electra Lake(quadrangle 1:24,000 scale)

Silverton(quadrangle 1:100,000 scale)

Durango(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Animas(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)

Geographic areas

Country State County
United States Colorado La Plata

Public Land Survey System information

Meridian Township Range Section Fraction State
New Mexico 039N 009W 25 SE OF NW Colorado

Comments on the location information

  • (LAND STATUS AND ADMINISTRATIVE AREA LOCATIONS CALCULATED USING GIS OVERLAY ANALYSIS FOR SAN JUAN N. F.). EAST OF U.S. ROUTE 550, ON HILLSIDE 0.3 MILE SE OF COLUMBINE CAMPGROUND AND 0.2 MILE NORTH OF NORTH END OF COLUMBINE LAKE. ; INFO FROM LAND.ST :1974

Commodities

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

Materials information

Materials Type of material
Galena Ore
Pyrite Ore
Sphalerite Ore
Calcite Gangue
Limonite Gangue
Quartz Gangue

Alteration

  • (Local) Fe Oxidation, Silicification

Analytical data

Result SIX CHIP SAMPLES OF CLAY AND SILICEOUS LIMESTONE FROM BACK AND RIB OF FIRST SECTION OF TUNNEL CONTAINED 0.2 OZ/TON AG, 0.01% PB, 0.01% ZN,0.008 OZ/TON AU. TEN CHIP SAMPLES OF CLAY, LIMONITE-STAINED SILICEOUS LIMESTONE, PYRITE, AND GOUGE ALONG VEIN IN EAST HALF OF TUNNEL CONTAINED0.3 TO 1.3 OZ/TON AG, 0.02% CU, 0.24% PB, 0.01 TO 0.25% ZN. THREE CHIP SAMPLES OF CALCITE, CLAY GOUGE, PYRITE, AND LIMONITE-STAINED SILICEOUS LIMESTONE FROM STOPED AREAS CONTAINED 2 OZ/TON AG, 0.02% CU, 0.39% PB,0.01 TO 0.76% ZN.

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 Associated
    Rock type Plutonic Rock > Granitoid > Monzonite
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Gabbro
    Rock unit name Electra Lake Gabbro;Monzonite Porphyry
    Rock description Electra Lake Gabbro;Monzonite Porphyry
    Stratigraphic age (youngest) Precambrian
    Chronological age 1454
    Dating method Rb-Sr
    Stratigraphic age (youngest) Precambrian
    Chronological age 1460
    Dating method U-Pb (zircon)
    Type of media Zircon
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Ouray Limestone;Leadville Limestone
    Rock description Ouray Limestone;Leadville Limestone

Nearby scientific data

(1) -107.80897, 37.61973
ListMap

Economic information

Geologic structures

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

Controls for ore emplacement

  • Probable Fault Zone Cutting Limestones

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Cascade District

Land status

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

Comments on the workings information

  • ONE SHAFT OF UNKNOWN DEPTH; ONE TUNNEL DRIVEN N 75 TO 83 E FOR 175FT, THENCE S 77 TO 85 E FOR 225 FT TO FACE; TWO SMALL STOPES

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit MINE DEVELOPED ON VEIN TRENDING N 77 TO 85 W, 62 TO 67 SW, AND CU TING WNW-DIPPING OURAY AND LEADVILLE LIMESTONES ON WEST FLANK OF NEEDLE MTNS UPLIFT.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-AUG-83 Schwochow, Stephen D. Colorado Geological Survey

Beyond USGS

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

Maps centered on this site

Authoritative Colorado resources

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