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  3. Mineral Resource Data System (MRDS)

Unnamed Placer Mine

Past Producer in Moffat county in Colorado, United States with commodity 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. 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. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10013452
MRDS ID D009747
Record type Site
Current site name Unnamed Placer Mine

Geographic coordinates

Geographic coordinates: -107.74873, 40.86718 (WGS84)
Elevation 2146
Location accuracy 1000(meters)
Relative position 24 MILES N 17 E FROM LAY

Site location context

Political divisions (FIPS codes)

Moffat(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

East Timberlake Creek(quadrangle 1:24,000 scale)

Craig(quadrangle 1:100,000 scale)

Craig(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Little Snake(hydrologic unit)

White-Yampa(hydrologic accounting unit)

White-Yampa(hydrologic subregion)

Upper Colorado(hydrologic region)

Geographic areas

Country State County
United States Colorado Moffat

Public Land Survey System information

Meridian Township Range Section Fraction State
6th Principal 011N 092W 32 SW Colorado

Comments on the location information

  • ON DIVIDE BETWEEN DRY GULCH AND POLE GULCH. LOCATION ESTIMATED FROM AIRPHOTO EXAMINATION. ; INFO FROM LAND.ST :(1974)

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Gold Ore

Host and associated rocks

  • Host or associated Host
    Rock type Unconsolidated Deposit > Sand and Gravel
    Rock unit name Cathedral Bluffs Member Of Wasatch Formation;Tipton Tongue Of Green River Formation
    Rock description Cathedral Bluffs Mbr Of Wasatch Formation;Tipton Tongue Of Green River Formation
    Stratigraphic age (youngest) Eocene
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Conglomerate

Nearby scientific data

(1) -107.74873, 40.86718
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Washakie Basin
Type of structure Local
Structure description Washakie Basin

Economic information about the deposit and operations

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

Mining district

District name Fourmile (Timberlake Creek) District

Land status

Ownership category Federal

Comments on the workings information

  • DRIFTS OF UNKNOWN EXTENT

Reference information

Bibliographic references

  • Deposit

    PARKER, B.H., JR., 1974, THE PLACERS OF MOFFAT COUNTY, IN GOLD PLACERS OF COLORADO: COLORADO SCHOOL OF MINES QUART., V. 69, NO. 4, P. 150-168.

  • Deposit

    TWETO, OGDEN, 1976, GEOLOGIC MAP OF THE CRAIG 1X2 QUADRANGLE, NORTHWESTERN COLORADO: USGS MAP I-972

  • Deposit

    SNOW, E.P., 1895, THE FOURMILE PLACER FIELDS OF (MOFFAT COUNTY), COLORADO AND WYOMING: ENG. MINING JOUR., V. 60. P. 102-105

  • Deposit

    HOOVER, HERBERT C., 1897, GEOLOGY OF THE FOUR-MILE PLACER MINING DISTRICT (MOFFAT COUNTY), COLORADO: ENG. MINING JOUR., V. 63, P. 510.

General comments

Subject category Comment text
Deposit PARKER (1974) QUOTES WRITTEN COMMUNICATION BY PROMMEL, "THE FINE SAND AND GRAVEL DEPOSITS HERE VARY FROM A FEW FEET TO OVER 30 FEET IN DEPTH, AND CONSIDERABLE CONCENTRATION OF BLACK SAND AND GOLD HAS TAKEN PLACE NEAR BEDROCK. SOME TIME AGO MR. ZIMMERMAN DID DRIFT MINING ALONG THESE ENRICHED STREAKS NEAR BEDROCK, BUT THE GROUND DID NOT STAND UP AND HE HAD TO ABANDON THE WORKINGS...(IN A SHALLOW PIT WHICH DID NOT REACH THE ENRICHED STREAK) A TRENCH SAMPLE...ACROSS 3.5 FEET OF RATHER COARSE GRAVEL RETURNED 9.6 CENT GOLD PER CUBIC YARD." PARKER COULD NOT DETERMINE IF THE DRIFTS WERE DEFINITELY IN BEDROCK. FARNSWORTH'S ORIGINAL DESCRIPTION STATED THAT THE HIGHER PAYING ZONES IN AREA LIE IN SLIGHTLY CONSOLIDATED GRAVELS BENEATH IRON OXIDE-CEMENTED CONGLOMERATE AND ABOVE LAYER OF "BLUE CLAY," (NOW INTERPRETED AS EOCENE BEDROCK). AU CONCENTRATIONS IN TERRACE AND MANTLE DEPOSITS APPEAR LIMITED TO LEVEL BELOW THE PROMINENT CONGLOMERATE OR "CAP ROCK," WHICH WAS INTERPRETED BY PARKER (1974) AND
Deposit THEOBALD AS A DELTAIC FAN IN EITHER THE TIPTON TONGUE OF GREEN FRIVER FM (EOCENE) OR CATHEDRAL BLUFFS MEMBER OF WASATCH FM (EOCENE). MODERN PLACERS THUS WERE DERIVED FROM EOCENE FOSSIL BEACH AND ALLU

Reporter information

Type Date Name Affiliation Comment
Reporter 01-DEC-82 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.