The Unnamed Placer is a gold mine located in Jefferson county, Colorado at an elevation of 6,079 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: 6,079 Feet (1,853 Meters)
Commodity: Gold
Lat, Long: 39.74306, -105.28917
Map: View on Google Maps
Satelite View
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Unnamed Placer MRDS details
Site Name
Primary: Unnamed Placer
Commodity
Primary: Gold
Location
State: Colorado
County: Jefferson
District: Lower Clear Creek Area
Land Status
Land ownership: Private
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
Type: Surface/Underground
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Deposit Type: Placer
Operation Type: Unknown
Year First Production: 1935
Year Last Production: 1935
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Rocky Mountain System
Physiographic Province: Southern Rocky Mountains
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Type: R
Description: Front Range Uplift, Denver Basin
Type: L
Description: Junction Ranch Fault Zone
Alterations
Not available
Rocks
Name: Sand and Gravel
Role: Host
Age Type: Host Rock
Age Young: Holocene
Analytical Data
Not available
Materials
Ore: Gold
Comments
Comment (Deposit): JUNCTION OF TWO BRANCH SHEARS IN JUNCTION RANCH FAULT ZONE HAVE CAUSED LOCAL ROCK WEAKENING, ALLOWING CREEK TO FORM LOCAL VALLEY WIDENING AND GRAVEL FILL. PROBABLE SLIGHT LOSS OF GRADE AND SUBSEQUENT LOWER STREAM COMPETENCE ACROSS THE WIDENED AREA COULD HAVE CAUSED ACCUMULATION OF GRAVEL AND DEPOSITION OF AU. APPARENTLY GOOD GRADE OF GRAVEL. DEPOSIT ALSO INCLUDES BENCH GRAVELS OF OLDER QUATERNARY (PLEISTOCENE) AGE, LYING 18 TO 45 FT ABOVE STREAM LEVEL ON IRREGULAR BEDROCK SURFACE AND OVERLAIN BY ALLUVIAL FAN AND TALUS DEPOSITS.
Comment (Location): ALONG SOUTH SIDE OF CLEAR CREEK. ELEV AND LAT-LONG GIVEN ARE FOR CENTER SW 36 ON CREEK. ; INFO FROM LAND.ST :(1975)
Comment (Workings): 400-FT-LONG SURFACE CUT AND PROBABLY SOME DRIFTING ON BEDROCK CONTACT
References
Reference (Deposit): PARKER, B.H., JR., 1974, GOLD PLACERS OF COLORADO: COLORADO SCHOOL OF MINES QUART., V. 69, NO. 3, P. 63-126.
Reference (Deposit): SHERIDAN, D.M., AND OTHERS, 1972, GEOLOGIC MAP OF THE EVERGREEN QUADRANGLE, JEFFERSON COUNTY, COLORADO: USGS MAP I-786-A.
Colorado Mining Photos
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