The Lafayette and Lafayette Ext. is a gold mine located in Mariposa county, California at an elevation of 1,299 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: 1,299 Feet (396 Meters)
Commodity: Gold
Lat, Long: 37.59139, -120.18778
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.
Lafayette and Lafayette Ext. MRDS details
Site Name
Primary: Lafayette and Lafayette Ext.
Commodity
Primary: Gold
Location
State: California
County: Mariposa
District: Hunter Valley
Land Status
Not available
Holdings
Not available
Workings
Type: Underground
Ownership
Owner Name: Louis And Gabriel Querioto (Ghirardelli)
Production
Not available
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
Not available
Structure
Not available
Alterations
Not available
Rocks
Name: Tuff
Role: Host
Age Type: Host Rock
Age Young: Late Jurassic
Analytical Data
Not available
Materials
Gangue: Quartz
Comments
Comment (Location): UTM EST. NE 1/4
Comment (Deposit): VEIN, 1 - 3 FT THICK
Comment (Workings): INCLINED SHAFT 90 FT. DEEP AND A VERTICAL SHAFT 70 FT. DEEP. SHAFT SUNK TO WATER LEVEL, 150 FEET.
Comment (Geology): GEOL.DESC: ON BLUE LEAD, BOWEN AND GRAY ( 1957 ) STATE THE VEIN HAS DEVELOPED ALONG OR CLOSE TO THE CONTACT OF GREENSTONE OF LOGTOWN RIDGE MEMBER OF AMADOR GROUP AND HUNTER VALLEY CHERT MEMBER. LAIZURE ( 1928 ) DESCRIBES THE WALL ROCK AS PORPHYRITE.
Comment (Deposit): TWO CLAIMS, PART OF A PARCEL OF PATENTED AGRICULTURAL LAND. THE VEIN IS NARROW BUT ORE SHOOTS HAVE BEEN CONSISTENTLY OF GOOD GRADE.
References
Reference (Deposit): BOWEN, O. E., JR., GRAY, C. H., JR., 1957 , MINES AND MINERAL DEPOSITS OF MARIPOSA COUNTY, CALIFORNIA: CALIF. JOUR. MINES AND GEOLOGY, V. 53 , NOS. 1 AND 2 , P. 116 , 275 .
Reference (Deposit): LAIZURE, C. MCK., 1928 , SAN FRANCISCO FIELD DIVISION IN TWENTY-FOURTH REPORT OF THE STATE MINERALOGIST: CALIFORNIA STATE MINING BUREAU. P. 93 - 4 .
Reference (Deposit): CASTELLO, W. O., 1921 , MINES AND MINERAL RESOURCES OF MARIPOSA COUNTY IN SEVENTEENTH REPORT OF THE STATE GEOLOGIST: CALIFORNIA STATE MINING BUREAU, P. 119 .
Reference (Production): BOWEN & 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.
