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Hidden Treasure Claim

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. General comments
  22. Reporter information

Geologic information

Identification information

Deposit ID 10017028
MRDS ID DC02745
Record type Site
Current site name Hidden Treasure Claim

Geographic coordinates

Geographic coordinates: -105.26389, 37.61808 (WGS84)
Elevation 3146
Relative position 4.5 MILES N 15 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 SE 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 NEAR HEAD OF WILLOW CREEK 1500 FT NE OF SUMMIT OF GRAYBACK MTN. ; INFO FROM LAND.ST :(1975)

Commodities

Commodity Importance
Gold Primary
Silver Secondary

Materials information

Materials Type of material
Pyrite Ore
Hematite Gangue

Analytical data

Result $6.80 AU/TON, $0.05 AG/TON

Mineral occurrence model information

Model code 72
USGS model code 19a
Deposit model name Polymetallic replacement
Mark3 model number 47

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Monzonite
    Rock unit name Monzonite Porphyry
    Rock description Monzonite Porphyry
    Stratigraphic age (youngest) Oligocene
    Stratigraphic age (youngest) Pennsylvanian
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Monzonite
    Rock unit name Minturn Formation
    Rock description Minturn Formation

Nearby scientific data

(1) -105.26389, 37.61808
ListMap

Economic information

Geologic structures

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

Ore body information

  • Strike N90W
    Dip 50S
    Width 0.91M

Controls for ore emplacement

  • thin seams in monzonite porphyry

Comments on the geologic information

  • GEOL.DESC: VERY FERRUGINOUS ORE TAKEN FROM CONTACT OF LIMESTONE WITH MONZONITE PORPHYRY

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

Comments on the production information

  • SAMPLE $6.80 GOLD $10.05 SILVER PER TON

Workings at the site

  • Type of workings Underground
    Length 72.54M
    Overall length 57.91M
    Overall width 18.29M

Comments on the workings information

  • ONE SHAFT SUNK ON SADDLE. ADIT DRIVEN 153 FT S60W, THENCE 35 FT WEST. AT END 35-FT VERTICAL WINZE SUNK AND 50-FT DRIFT DRIVEN NORTH.

Reference information

General comments

Subject category Comment text
Deposit VEIN IS ALONG CONTACT BETWEEN LIMESTONE AND PORPHYRY. STRIKE AND DIP ARE ORIENTATION OF CONTACT. VERY FERRUGINOUS ORE TAKEN FROM CONTACT OF LIMESTONE WITH MONZONITE PORPHYRY.

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.