The Spread Eagle Group is a gold mine located in Mariposa county, California at an elevation of 2,881 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: 2,881 Feet (878 Meters)
Commodity: Gold
Lat, Long: 37.55028, -120.01500
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.
Spread Eagle Group MRDS details
Site Name
Primary: Spread Eagle Group
Secondary: Empire Farmers Hope
Secondary: Miners Hope
Secondary: Mohawk
Secondary: Monarch
Secondary: Tollgate
Secondary: Bonanza Ii
Commodity
Primary: Gold
Secondary: Copper
Secondary: Lead
Secondary: Silver
Location
State: California
County: Mariposa
District: Whitlock
Land Status
Not available
Holdings
Not available
Workings
Type: Surface/Underground
Ownership
Owner Name: Mack C. Lake
Home Office: C/O Carlo Morbio
Production
Year: 1955
Time Period: 1893 - 1955
Material type: AU,AG
Description: Cp_Grade: ^0.5 - 0.26 Oz Au/Ton
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Discovery Year: 1855
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
Not available
Analytical Data
Analytical Data: ASSAYS FROM $4.86 - $8.24 AU/TON SULFIDE CONCENTRATES AVG $250/TON.
Materials
Ore: Pyrite
Ore: Gold
Ore: Chalcopyrite
Ore: Galena
Gangue: Quartz
Comments
Comment (Production): SUBSTANTIAL PRODUCTION 1934 - 1939 FROM ORE LESS 0.25 OZ AU/TON. VEIN CONTAINS POCKETS OF HIGH GRADE 1 OZ/TON ORE WITH 2 - 3 OZ/TON NOT EXCEPTIONAL. EMPIRE CLAIM, S OF MINERS HOPE IS SMALL VEIN CALLED DOLPH PRODUCED $25,000 . PRODUCTION TO 1940 ABOUT $425,000 . REPORTED PRODUCTION $100,200 . 2500 TONS ORE RECOVERED FROM ONE SHOOT MINERS HOPE MINE ASSAYED $9.70/TON, YIELDED $7.20/TON BY AMALGAMATION.
Comment (Deposit): VEINS SEVERAL, 2 - 6 FT THICK VEINS ON SLATE CONTACT DIP EAST, THOSE IN GREENSTONE DIP NEARLY 90 .
Comment (Workings): SHAFT W/2 LEVELS, DRIFTS.
Comment (Deposit): Discovery Year: 1850'S
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. 307
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 139
Reference (Deposit): LAIZURE, C. MCK., 1928 , SAN FRANCISCO FIELD DIVISION, IN TWENTY-FOURTH REPORT OF THE STATE MINERALOGIST: CALIFORNIA STATE MINING BUREAU, P. 117
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.
