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Rock Creek Placers

Producer in Fremont county in Wyoming, United States with commodities Gold, Silver, Platinum, Copper, Mica
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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. Links to other databases
  19. Bibliographic references
  20. General comments
  21. Reporter information

Geologic information

Identification information

Deposit ID 10080767
MRDS ID W032121
Record type Site
Current site name Rock Creek Placers

Geographic coordinates

Geographic coordinates: -108.67768, 42.47066 (WGS84)
Elevation 2286
Location accuracy 100(meters)
Relative position NORTHWEST AND SOUTHEAST OF ATLANTIC CITY, Accurate Along Rock Creek

Site location context

Political divisions (FIPS codes)

Fremont(county)

Wyoming(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Atlantic City(quadrangle 1:24,000 scale)

South Pass(quadrangle 1:100,000 scale)

Lander(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Sweetwater(hydrologic unit)

North Platte(hydrologic accounting unit)

North Platte(hydrologic subregion)

Missouri(hydrologic region)

Federal lands

Shoshone 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 Wyoming Fremont

Public Land Survey System information

Meridian Township Range Section Fraction State
6th Principal 029N;030N 100W;100W 20,21,22,27,28,29;13 Wyoming

Comments on the location information

  • Location given is on Rock Creek southeast of Atlantic City. DMEA property lies northwest of there at approx 42-29N, 108-39W. Rock Creek is at the southeast end of the Wind River range

Commodities

Commodity Importance
Gold Primary
Silver Secondary
Platinum Critical Tertiary
Copper Tertiary
Mica Tertiary

Comments on the commodity information

  • GOLD IS ROUNDED AND FLAKES. NUGGETS ARE RARE. RARE WIRE GOLD SUGGESTS A SHORT TRANSPORT DISTANCE. REPORTED PT IS WITHIN DMEA PROPERTY
  • Presence of platinum is unconfirmed. Refer to the DMA docket (page 15 of 34, memo from Charles Merrill dated 3/21/51 and p. 21 of 34, memo from P.T. Allsman dated 7/25/1951).

Materials information

Materials Type of material
Chalcopyrite Ore
Gold Ore
Mica Ore
Silver Ore
Cassiterite Gangue
Scheelite Gangue

Analytical data

Result 0.012=0.016 OZ/YD AU. FINENESS=840-900. AU:AG=10:1

Mineral occurrence model information

Model code 119
USGS model code 39a
Deposit model name Placer Au-PGE
Mark3 model number 54

Host and associated rocks

  • Host or associated Host
    Rock type Unconsolidated Deposit > Gravel
    Stratigraphic age (youngest) Holocene

Nearby scientific data

(1) -108.67768, 42.47066
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Large Fault

Ore body information

  • General form STREAM SEDIMENT DEPOSITS
    Thickness 0.91M

Controls for ore emplacement

  • Fault Crossing Stream; Stream Hydraulics

Comments on the geologic information

  • QUARTZ VEINS IN FAULT ZONES IN GNEISSES, SCHIST ARE PRESENT IN AREA. AREA LIES ALONG THE NORTHWEST FLANK OF THE SOUTH PASS GREENSTONE BELT.

Economic information about the deposit and operations

Development status Producer
Commodity type Both
Deposit size Small
Significant No

Mining district

District name South Pass-Atlantic City District

Land status

Ownership category National Forest
Area name Shoshone National Forest

Ownership information

  • Owner Rock Creek Placers, Inc.
    Home office Room 208, Wright Building, Tulsa, Oklahoma
    Year 1951
  • Type Operator
    Owner Stout Mining Co.
    First year 1987

Comments on the production information

  • ESTIMATE OF GOLD PRODUCTION IS PROBABLY LOW
  • The placer group consists of 3 leased blocks (Timba Bah, Hester, and Hansen) and 14 placer claims. Includes the 8 mi-long Timba Bah lease, operated from 1933-1937. Timber Bar is said to have produced $800,000 in gold (1933-1937) (DMEA Docket 727, p. 27 of 34)

Comments on the workings information

  • DREDGING

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit LODES CONTAINING AU AND FE ARE PRESENT IN DISTRICT. RICHEST GRAVEL IS 1 MI BELOW ATLANTIC CITY NEAR A LARGE FAULT THAT CROSSES ROCK CREEK. NO GOLD IS FOUND IN GRAVEL THAT OVERLIES SCHIST, ONLY THAT THAT OVERLIES AMPHIBOLITE. GOLD IS FOUND WITHIN 1-3 FT OF BEDROCK
Deposit RECORD D003000 HAS BEEN MERGED AND DELETED.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-DEC-77 Hasler, J. William U.S. Geological Survey
Updater 01-FEB-82 Barari, Rachel A. U.S. Geological Survey
Updater 2016-03-14 Anna B. Wilson USGS
Updater 01-AUG-91 Peterson, Jocelyn A. U.S. Geological Survey

Beyond USGS

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

Maps centered on this site