The Harvard Mine Group is a gold mine located in Tuolumne county, California at an elevation of 1,499 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: 1,499 Feet (457 Meters)
Commodity: Gold
Lat, Long: 37.94639, -120.43667
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.
Harvard Mine Group MRDS details
Site Name
Primary: Harvard Mine Group
Commodity
Primary: Gold
Location
State: California
County: Tuolumne
District: Mother Lode Belt
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
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: M
Physiography
General Physiographic Area: Pacific Mountain System
Physiographic Province: Cascade-Sierra Mountains
Physiographic Section: Sierra Nevada
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Name: Slate
Role: Host
Age Type: Host Rock Unit
Age Young: Late Jurassic
Name: Slate
Role: Host
Age Type: Host Rock
Age Young: Late Jurassic
Analytical Data
Not available
Materials
Ore: Gold
Gangue: Quartz
Comments
Comment (Workings): MINE OPENED THROUGH 2 SHAFTS 1,000 FT. APART. NORTH SHAFT 700 FT. WITH WINZE TO 1850 FT. LEVEL; THE SOUTH SHAFT HAS LEVELS AT 150 FT. INTERVALS. LATEST DEVELOPMENT CONSISTS OF DRILLING AND DRIFTING.
Comment (Geology): HOST ROCKS INCLUDE UNNAMED SERPENTINE, COSUMNES FM SLATE, AND LOGTOWN RIDGE FM SERICITE AND CHLORITE SCHISTS. ; GEOL.DESC: SERPENTINE FOOTWALL, SCHIST AND SLATE ON HANGING WALL. INITIALLY HIGH-GRADE ORE EXTRACTED FROM NARROW QUARTZ VEINS IN SERPENTINE; LATER ORE FROM QUARTZ STRINGERS IN MINERALIZED SCHIST WHICH WAS LOW-GRADE.
Comment (Deposit): NARROW VEINS, QUARTZ STRINGERS
Comment (Deposit): THIS GROUP OF CLAIMS INCLUDES MC CANN, MOONEY, PACIFIC, VULTURE, TRIO, AND SOBRANTE. THESE EXTEND FOR A TOTAL DISTANCE OF NEARLY 1 MILE. DEVELOPMENT BEGAN IN 1850 AND WAS WORKED INTERMITTANTLY UNTIL THE 1940 'S. SEVERAL ORE SHOOTS UP TO 200 FT IN LENGTH HAVE BEEN DEVELOPED OVER THE YEARS.
References
Reference (Deposit): LOGAN, C.A., 1928 , SACRAMENTO FIELD DIV. TUOLUMNE COUNTY: CDM REPT. 24 , P. 18
Reference (Production): LOGAN, C.A., 1928
Reference (Deposit): LOGAN, C.A., 1949 , MINES AND MIN. RES. OF TUOLUMNE COUNTY, CAL.: CDM REPT 45 , P. 65
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.
