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Blanca Mine

Past Producer in Alamosa county in Colorado, United States with commodities Gold, Silver, Bismuth, Lead, Tellurium
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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. Mineral occurrence model information
  8. Host and associated rocks
  9. Nearby scientific data
  10. Geologic structures
  11. Economic information about the deposit and operations
  12. Mining district
  13. Land status
  14. Links to other databases
  15. Bibliographic references
  16. Reporter information

Geologic information

Identification information

Deposit ID 10101948
MRDS ID DC04258
Record type Site
Current site name Blanca Mine

Geographic coordinates

Point of reference Pit
Geographic coordinates: -105.50113, 37.57419 (WGS84)
Elevation 3658
Location accuracy 50(meters)
Relative position 9.2 MILES DUE NORTH FROM BLANCA.

Site location context

Political divisions (FIPS codes)

Alamosa(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Twin Peaks(quadrangle 1:24,000 scale)

Blanca Peak(quadrangle 1:100,000 scale)

Trinidad(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

San Luis(hydrologic unit)

Rio Grande Headwaters(hydrologic accounting unit)

Rio Grande Headwaters(hydrologic subregion)

Rio Grande(hydrologic region)

Federal lands

Rio Grande 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 Alamosa

Public Land Survey System information

Meridian Township Range Section Fraction State
6th Principal 028S 073W 35 SW Colorado

Comments on the location information

  • ALONG HOLBROOK CREEK. LAT-LONG GIVEN IS CENTER OF SEC. 35. ; INFO FROM LAND.ST :(1975)

Commodities

Commodity Importance
Gold Primary
Silver Tertiary
Bismuth Critical Tertiary
Lead Tertiary
Tellurium Critical Tertiary

Comments on the commodity information

  • HESSITE AND ALTAITE MAY ALSO BE PRESENT. TELLURIDES CHARACTERISTIC OF DISTRICT.

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 > Mafic Intrusive Rock > Diorite
    Rock unit name Basic To Silicic Dike Swarms
    Rock description Basic To Silicic Dike Swarms
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Tertiary
  • Host or associated Host
    Rock type Metamorphic Rock > Gneiss
    Rock unit name Granodiorite Gneiss;Basic To Silicic Dike Swarms
    Rock description Granodiorite Gneiss;Basic To Silicic Dike Swarms

Nearby scientific data

Pit (1) -105.50113, 37.57419
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Sierra Blanca Massif, Rio Grande Rift Zone, Ft. Garland Embayment
Type of structure Local
Structure description Sangre De Cristo Frontal Fault

Comments on the geologic information

  • GEOL.DESC: SMALL VEINS

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Production years 1928,1934

Mining district

District name Blanca District

Land status

Ownership category National Forest

Comments on the production information

  • TRIAL SHIPMENTS OF A FEW TONS OF GOLD ORE

Comments on development

  • TRIAL SHIPMENTS OF ORE MADE

Reference information

Bibliographic references

  • Deposit

    VANDERWILT, J.W., 1947, MINERAL RESOURCES OF COLORADO: COLO. MINERAL RESOURCES BD., P. 31

  • Deposit

    ECKEL, E.B., 1961, USGS BULL. 1114, P. 322-323.

  • Deposit

    HENDERSON, C.W., 1926, USGS PROF. PAPER 138, P. 110

  • Deposit

    JOHNSON, R.B., 1969, GEOLOGIC MAP OF THE TRINIDAD QUADRANGLE, SOUTH-CENTRAL COLORADO: USGS MAP 1-558.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-APR-81 Schwochow, Stephen D. Colorado Geological Survey
Updater 01-MAY-83 Schwochow, Stephen D. Colorado Geological Survey

Beyond USGS

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

External references

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.