The Colorado is a gold mine located in Mariposa county, California at an elevation of 2,851 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: 2,851 Feet (869 Meters)
Commodity: Gold
Lat, Long: 37.55556, -119.97167
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.
Colorado MRDS details
Site Name
Primary: Colorado
Secondary: Colorado Quartz Mine
Commodity
Primary: Gold
Secondary: Silver
Location
State: California
County: Mariposa
District: Colorado
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Owner Name: Corinne Kratzer, F. E. And P. W. Judkins, Et Al.
Production
Year: 1938
Time Period: - 1938
Material type: AU
Description: Cp_Grade: ^ .12 Oz/Ton Ag
Year: 1938
Time Period: - 1938
Material type: ORE
Description: Cp_Grade: ^.31 Oz/Ton Au
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Pacific Mountain System
Physiographic Province: Cascade-Sierra Mountains
Physiographic Section: Sierra Nevada
Mineral Deposit Model
Not available
Orebody
Form: PINCH AND SWELL
Structure
Not available
Alterations
Not available
Rocks
Name: Metasedimentary Rock
Role: Host
Age Type: Host Rock
Age Young: Late Permian
Analytical Data
Not available
Materials
Ore: Pyrite
Ore: Gold
Ore: Silver
Gangue: Quartz
Comments
Comment (Deposit): QUARTZ VEIN
Comment (Workings): 200-FT. INCLINED SHAFT, 500-FT. WORKING LEVEL, 200-FT. DRIFT, STOPE.
Comment (Geology): GEOL.DESC: SANDY METASEDIMENTS HAVE BEEN INTRUDED BY GREENSTONE DIKES AND SILLS 1-3 FT THICK. VEIN AVE 1.5-2 FT THICK, CHIEFLY BANDED QUARTZ. ORE SHOOTS ARE 30 - 75 FT WIDE AND PITCH ABOUT 45 DEG. STRIKE AND DIP OF SLATY CLEAVAGE NEAR THE SHAFT IS ROUGHLY PARALLEL TO THE VEIN AND TO THE BEDDING PLANES.
Comment (Deposit): ONE PATENTED FRACTIONAL CLAIM OF 11 ACRES AND 2 UNPATENTED CLAIMS. VEIN MATTER IS CHIEFLY BANDED QUARTZ CARRYING FREE GOLD AND A LITTLE PYRITE.
Comment (Production): NOTHING IS RECORDED OF EARLY PRODUCTION. IN THE LATE 1920'S ABOUT 2500 TONS OF ORE WAS MINED WHICH RAN $10 TO $11 PER TON WITH SOME DEVELOPMENT ROCK RUNNING $8. TOTAL PRODUCTION PROBABLY DOES NOT EXCEED $50,000 .
Comment (Location): NR. CTR. OF SEC. IN SW 1/4 UTM EST.
References
Reference (Deposit): BOWEN, O. E., JR., & GRAY, H., JR., 1957 , MINES AND MINERAL DEPOSITS OF MARIPOSA COUNTY, CALIF.: CALIF. JOUR. MINES & GEOL., VOL. 53 , NOS. 1 & 2 , P. 90 - 91 , 251 .
Reference (Deposit): LAIZURE, C. MCK., 1928 , S. F. FIELD DIV.- MARIPOSA COUNTY: 24TH REPORT STATE MINERALOGIST, VOL. 24 , NO. 2 , P. 84 , 124 .
Reference (Deposit): CASTELLO, W. O., 1921 , MARIPOSA COUNTY: 17TH REPORT STATE MINERALOGIST ( FOR 1920 ), P. 111 .
Reference (Production): BOWEN AND GRAY, 1957
California Gold
"Where to Find Gold in California" looks at the density of modern placer mining claims along with historical gold mining locations and mining district descriptions to determine areas of high gold discovery potential in California. Read more: Where to Find Gold in California.
