The Mark Thomas is a gold mine located in La Plata county, Colorado at an elevation of 6,601 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: 6,601 Feet (2,012 Meters)
Commodity: Gold
Lat, Long: 37.4375, -107.80472
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.
Mark Thomas MRDS details
Site Name
Primary: Mark Thomas
Commodity
Primary: Gold
Tertiary: Mercury
Tertiary: Platinum
Location
State: Colorado
County: La Plata
Land Status
Land ownership: National Forest
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.
Administrative Organization: San Juan N. F.
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Occurrence
Deposit Type: Stream Placer
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Intermontane Plateaus
Physiographic Province: Colorado Plateaus
Physiographic Section: Navajo Section
Mineral Deposit Model
Model Name: Placer Au-PGE
Orebody
Form: STREAM SEDIMENT DEPOSITS
Structure
Not available
Alterations
Not available
Rocks
Name: Alluvium
Role: Host
Age Type: Host Rock
Age Young: Pleistocene
Analytical Data
Not available
Materials
Ore: Gold
Comments
Comment (Location): IN SAN JUAN NATIONAL FOREST
Comment (Commodity): UNABLE TO FIND SOURCE OF PGE DATA (1989); SOURCE PRESUMED TO BE UNPUB DATA OF HASLER
Comment (Deposit): NO NEW INFORMATION FOUND FOR DEPOSIT IN 1989 ; INFO.SRC : 2 UNPUB REPT
References
Reference (Deposit): HASLER, W.J., U.S. GEOLOGICAL SURVEY, UNPUB. DATA
Colorado Mining Photos
Check out this collection of Colorado's best historic mining photos: Incredible Photos of Colorado Mining Scenes.
