Lafayette and Lafayette Ext.

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

Name: Lafayette and Lafayette Ext.  

State:  California

County:  Mariposa

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.


Satelite image of the Lafayette and Lafayette Ext.

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

"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.