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  3. Mineral Resource Data System (MRDS)

Unnamed Silver-Lead Occurrence

Occurrence in Archuleta county in Colorado, United States with commodities Silver, Lead, 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. Economic information about the deposit and operations
  14. Mining district
  15. Land status
  16. Links to other databases
  17. Bibliographic references
  18. Reporter information

Geologic information

Identification information

Deposit ID 10014020
MRDS ID D010627
Record type Site
Current site name Unnamed Silver-Lead Occurrence

Geographic coordinates

Geographic coordinates: -106.75617, 37.34946 (WGS84)
Elevation 2957
Location accuracy 500(meters)
Relative position 10.8 MILES S 55 W FROM SUMMITVILLE

Site location context

Political divisions (FIPS codes)

Archuleta(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Blackhead Peak(quadrangle 1:24,000 scale)

Antonito(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)

South San Juan Wilderness(Wilderness)

Wilderness FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States Colorado Archuleta

Public Land Survey System information

Meridian Township Range Section Fraction State
New Mexico 036N 002E 20 SE Colorado

Comments on the location information

  • (LAND STATUS AND ADMINISTRATIVE AREA LOCATIONS CALCULATED USING GIS OVERLAY ANALYSIS FOR SAN JUAN N. F.). ON SOUTH SIDE OF UNNAMED TRIBUTARY OF QUARTZ CREEK 4.5 MILES SW OF CRATER LAKE. ; INFO FROM LAND.ST :1975

Commodities

Commodity Importance
Silver Tertiary
Lead Tertiary
Copper Tertiary
Gold Tertiary

Comments on the commodity information

  • SPECIFIC ORE MINERALS UNKNOWN, BUT LINDQUIST CITES GENERAL OCCURRENCES OF PYRITE, ARGENTIFEROUS GALENA, CHALCOPYRITE, AND PHRRHOTITE IN CRATER LAKE ALTERED AREA.

Materials information

Materials Type of material
Calcite Gangue

Alteration

  • (Local) Hydrothermal

Analytical data

Result FIRE ASSAYS OF CHIP AND VEIN SAMPLES GAVE TRACE AU, TRACE TO 0.1 OZ/TON AG
Result SEMIQUANTITATIVE SPECTROGRAPHIC ANALYSES GAVE UP TO 0.004% CU, UP TO 0.01% PB. ONE SAMPLE CONTAINED 0.02% B.

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 Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
    Rock unit name Conejos Formation--Vent Facies
    Rock description Conejos Formation--Vent Facies
    Stratigraphic age (youngest) Oligocene
    Stratigraphic age (youngest) Oligocene
    Stratigraphic age (youngest) Oligocene
    Stratigraphic age (youngest) Oligocene
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Conglomerate
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic)
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Pyroclastic Rock > Volcanic Breccia (Agglomerate)
    Rock unit name Conejos Formation--Volcaniclastic Facies
    Rock description Conejos Formation--Volcaniclastic Facies
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyodacite

Nearby scientific data

(1) -106.75617, 37.34946
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description San Juan Volcanic Field
Type of structure Local
Structure description Platoro Caldera, Unnamed Fault, Quartz Creek Anticline, Crater Creek Stock

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1975
Discoverer Usgs And Usbm

Mining district

District name Crater District

Land status

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

Reference information

Bibliographic references

  • Deposit

    LINDQUIST, A.E., 1977, METALLIC AND COAL RESOURCES, IN MINERAL RESOURCES OF THE CHAMA-SOUTHERN SAN JUAN MOUNTAINS WILDERNESS STUDY AREA, MINERAL, RIO GRANDE, ARCHULETA, AND CONEJOS COUNTIES, COLORADO: USGS OPEN-FILE REPT. 77-309.

  • Deposit

    LIPMAN, P.W., 1974, GEOLOGIC MAP OF THE PLATORO CALDERA AREA, SOUTHEASTERN SAN JUAN MOUNTAINS, SOUTHWESTERN COLORADO: USGS MAP I-828.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1983 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

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