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Willow Gulch Placer

Past Producer in Costilla county in Colorado, United States with commodities Gold, 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. 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. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10017029
MRDS ID DC02746
Record type Site
Current site name Willow Gulch Placer

Geographic coordinates

Geographic coordinates: -105.25723, 37.60919 (WGS84)
Elevation 2926
Location accuracy 1000(meters)
Relative position 4 MILES N23E FROM 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 SE 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. SITE OR CLAIM LIES ALONG UPPER REACHES OF WILLOW CR. ON SE SIDE OF GRAYBACK MTN. LAT-LONG GIVEN IS APPROX. CENTER SE4 ; INFO FROM LAND.ST :(1975)

Commodities

Commodity Importance
Gold Primary
Tellurium Critical Tertiary

Comments on the commodity information

  • COARSE GOLD IN ROUND AND FLAT GRAINS AND AS WIRES

Materials information

Materials Type of material
Calaverite Ore
Gold Ore
Pyrite Gangue

Analytical data

Result 2 TO 8 COLORS/PAN AT GRASS ROOTS, 25 TO 90 COLORS/PAN AT BEDROCK

Mineral occurrence model information

Model code 56
USGS model code 17a
Deposit model name Placer Au

Host and associated rocks

  • Host or associated Host
    Rock type Unconsolidated Deposit > Sand and Gravel
    Rock unit name Recent Alluvium
    Rock description Terrace Gravel;Recent Alluvium
    Stratigraphic age (youngest) Holocene

Nearby scientific data

(1) -105.25723, 37.60919
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Sierra Blanca Massif, Ft. Garland Embayment

Ore body information

  • Width 15.24M

Controls for ore emplacement

  • Valley-Fill And Terrace Gravels Along Major Streams

Comments on the geologic information

  • AU DERIVED FROM LOW-GRADE ORES ON GRAYBACK MTN. FOUND ONLY ALONG PLACER CR. AND TRIBUTARIES HEADING ON OR NEAR GRAYBACK MTN.

Economic information about the deposit and operations

Operation type Surface
Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Grayback (Russell) District

Land status

Ownership category Private

Comments on development

  • SITE WAS WORKED BY SLUICING BUT LACK OF WATER PREVENTED MUCH DEVELOPMENT.

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit AVE. 8 FT THICK.

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.

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.