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  3. Mineral Resource Data System (MRDS)

Homestake Tunnel

Prospect in Costilla county in Colorado, United States with commodities Gold, Silver
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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. Mineral occurrence model information
  9. Host and associated rocks
  10. Nearby scientific data
  11. Geologic structures
  12. Ore body information
  13. Controls for ore emplacement
  14. Economic information about the deposit and operations
  15. Mining district
  16. Land status
  17. Ownership information
  18. Workings at the site
  19. Links to other databases
  20. Bibliographic references
  21. Reporter information

Geologic information

Identification information

Deposit ID 10087421
MRDS ID D006741
Record type Site
Current site name Homestake Tunnel

Geographic coordinates

Geographic coordinates: -105.26889, 37.61669 (WGS84)
Elevation 3103
Relative position 4.35 MILES N 13 E OF RUSSELL

Site location context

Political divisions (FIPS codes)

Costilla(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Russell(quadrangle 1:24,000 scale)

Blanca Peak(quadrangle 1:100,000 scale)

Trinidad(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Alamosa-Trinchera(hydrologic unit)

Rio Grande Headwaters(hydrologic accounting unit)

Rio Grande Headwaters(hydrologic subregion)

Rio Grande(hydrologic region)

Geographic areas

Country State County
United States Colorado Costilla

Public Land Survey System information

Meridian Township Range Section Fraction State
6th Principal 028S 070W 18 SW OF SW OF NW Colorado

Comments on the location information

  • ALTHOUGH DISTRICT ACTUALLY IS IN UNSURVEYED PRIVATE LAND GRANT, SECTIONS REPORTED ARE BASED ON PATTON AND OTHERS (1910) MAP RATHER THAN PROJECTIONS FROM ADJACENT QUADS. LAT-LONG AND ELEVATIONS DETERMINED FROM TOPO QUAD. MINE OR CLAIM LIES 1000 FT NW OF SUMMIT OF GRAYBACK MTN. ; INFO FROM LAND.ST :(1975)

Commodities

Commodity Importance
Gold Primary
Silver Primary

Comments on the commodity information

  • ASSAY OF ORE IN 6-IN. AND 12-IN. VEIN; ASSAY OF TWO THIN SULFIDE VEINS

Materials information

Materials Type of material
Pyrite Ore

Analytical data

Result $1.60 AU/TON, $0.25 AG/TON
Result $110 AU/TON, $0.35 AG/TON

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 Diorite
    Rock description Diorite
    Stratigraphic age (youngest) Pennsylvanian
    Stratigraphic age (youngest) Oligocene
    Stratigraphic age (youngest) Pennsylvanian
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Minturn Formation
    Rock description Minturn Formation

Nearby scientific data

(1) -105.26889, 37.61669
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Sierra Blanca Massif, Ft. Garland Embayment
Type of structure Local
Structure description Vega Cr. Anticline, Wagon Mesa Fault

Ore body information

  • Width 0.3M

Controls for ore emplacement

  • thin flat seams and 1- 2 ft veins of clay and pyrite

Economic information about the deposit and operations

Operation type Underground
Development status Prospect
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Grayback (Russell) District

Land status

Ownership category Private

Ownership information

  • Type Owner
    Owner Trinchera (Estate)
    First year 1910

Workings at the site

  • Type of workings Surface
    Length 213.36M

Comments on the workings information

  • MAIN ADIT DRIVEN 700 FT AT S 40 E

Reference information

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1981 Schwochow, Stephen D. Colorado Geological Survey
Updater 01-MAY-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.