The Unnamed Placer Mines is a gold mine located in Moffat county, Colorado at an elevation of 6,781 feet.
About the MRDS Data:
All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.
Mine Info
Elevation: 6,781 Feet (2,067 Meters)
Commodity: Gold
Lat, Long: 40.82778, -107.67722
Map: View on Google Maps
Satelite View
MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.
Unnamed Placer Mines MRDS details
Site Name
Primary: Unnamed Placer Mines
Commodity
Primary: Gold
Location
State: Colorado
County: Moffat
District: Fourmile (Timberlake Creek) District
Land Status
Land ownership: Federal
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Deposit Type: Placer
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Rocky Mountain System
Physiographic Province: Wyoming Basin
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Type: R
Description: Washakie Basin
Type: L
Description: Washakie Basin
Alterations
Not available
Rocks
Name: Sand and Gravel
Role: Host
Age Type: Host Rock
Age Young: Holocene
Name: Sand and Gravel
Role: Host
Age Type: Host Rock Unit
Age Young: Holocene
Analytical Data
Not available
Materials
Ore: Gold
Comments
Comment (Location): ALONG UNNAMED TRIBUTARY OF EAST TIMBERLAKE CREEK 0.5 MILE NW OF TIMBERLAKE MINING AND DEVELOPMENT CO.'S PLACERS, ELEV AND LAT-LONG GIVEN IS E CORNER SENE 14. ; INFO FROM LAND.ST :(1974)
Comment (Deposit): 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 THEOBALD AS A DELTAIC FAN IN EITHER THE TIPTON TONGUE OF GREEN RIVER FM (EOCENE) OR CATHEDRAL BLUFFS MEMBER OF WASATCH FM (EOCENE). MODERN PLACERS THUS WERE DERIVED FROM EOCENE FOSSIL BEACH AND ALLUVIAL PLACERS AND PROBABLY BEGAN FORMING IN LATE PLIOCENE OR PLEISTOCENE TIME. AGE OF MINERALIZATION CITED FOR DEPOSIT DEPENDS ON UNIT WORKED--EOCENE FOR BEDROCK OPERATIONS OR QUATERNARY FOR TERRACE, STREAM BED, AND MANTLE OPERATIONS. THIS DEPOSIT APPEARS TO BE SIMILAR TO THAT IN THE HIGHER TRIBUTARY CUTS AT TIMBERLAKE MINING AND DEVELOPMENT CO. OPERATIONS 0.5 MILE TO SE. ON AIRPHOTOS, CUTS AT THIS OPERATION
Comment (Deposit): APPEAR TO BE IN STREAM BED ALLUVIUM AND IN ADJACENT GROUND (POSSIBLE BEDROCK). PARKER STATED THAT THE APPARENT TERRACE DEPOSIT TO THE SE COULD BE A FAN OF (ANCESTRAL?) HOUSEL GULCH ORIGIN. STREAM BED
References
Reference (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.
Reference (Deposit): TWETO, OGDEN, 1976, GEOLOGIC MAP OF THE CRAIG 1X2 QUADRANGLE, NORTHWESTERN COLORADO: USGS MAP I-972
Reference (Deposit): SNOW, E.P., 1895, THE FOURMILE PLACER FIELDS OF (MOFFAT COUNTY), COLORADO AND WYOMING: ENG. MINING JOUR., V. 60, P. 102-105
Reference (Deposit): HOOVER, HERBERT C., 1897, GEOLOGY OF THE FOUR-MILE PLACER MINING DISTRICT (MOFFAT COUNTY), COLORADO: ENG. MINING JOUR., V. 63, P. 510.
Colorado Mining Photos
Check out this collection of Colorado's best historic mining photos: Incredible Photos of Colorado Mining Scenes.
