Spread Eagle Group

  

Mine Info

State: California

County: Mariposa

Elevation: 2,881 feet (878 meters)

Primary Mineral: Gold

Lat, Long: 37.55028, -120.01500



Spread Eagle Group MRDS details

Site Name

Commodity

Location

Primary: "Spread Eagle Group"
Secondary: "Empire Farmers Hope"
Secondary: "Miners Hope"
Secondary: "Mohawk"
Secondary: "Monarch"
Secondary: "Tollgate"
Secondary: "Bonanza Ii"
Primary: Gold
Secondary: Copper
Secondary: Lead
Secondary: Silver
State: California
County: Mariposa
District: Whitlock
 

Land Status

Holdings

Workings

Land ownership:
Administrative Organization:
Type: Surface/Underground


Ownership

Production

Deposit

Owner Name: Mack C. Lake
Company ID:
Percent:
Home Office: C/O Carlo Morbio
Info Year:
Years: -

Year: 1955
Time Period: 1893 - 1955
Mined:
Material type: AU,AG
Description: Cp_Grade: ^0.5 - 0.26 Oz Au/Ton
Record Type: Site
Operation Category: Past Producer
Deposit Type:
Plant Type:
Plant Subtype:
Operation Type: Unknown
Mining Method:
Milling Method:
Year First Production:
Year Last Production:
Discovery Year: 1855
Discovery Method:
Years of Production:
Organization:
Significant: N
Deposit Size: S


Physiography

Mineral Deposit Model

Orebody

General Physiographic Area: Pacific Mountain System
Physiographic Province: Cascade-Sierra Mountains
Physiographic Section: Sierra Nevada
Physiographic Detail:
Name:
Form:


Structure

Alterations

Rocks



Analytical Data

Materials

Analytical Data : ASSAYS FROM $4.86 - $8.24 AU/TON SULFIDE CONCENTRATES AVG $250/TON.
Ore: Pyrite
Ore: Gold
Ore: Chalcopyrite
Ore: Galena
Gangue: Quartz


Comments

Comment Type:
Production
Comment 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 Type:
Deposit
Comment VEINS SEVERAL, 2 - 6 FT THICK VEINS ON SLATE CONTACT DIP EAST, THOSE IN GREENSTONE DIP NEARLY 90 .
Comment Type:
Workings
Comment SHAFT W/2 LEVELS, DRIFTS.
Comment Type:
Deposit
Comment Discovery Year: 1850'S


References

Reference Category:
Deposit
Pages:
Reference: 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
URL:
Reference Category:
Deposit
Pages:
Reference: CASTELLO, W. O., 1921 , MINES AND MINERAL RESOURCES OF MARIPOSA COUNTY IN SEVENTEENTH REPORT OF THE STATE GEOLOGIST: CALIFORNIA STATE MINING BUREAU, P 139
URL:
Reference Category:
Deposit
Pages:
Reference: LAIZURE, C. MCK., 1928 , SAN FRANCISCO FIELD DIVISION, IN TWENTY-FOURTH REPORT OF THE STATE MINERALOGIST: CALIFORNIA STATE MINING BUREAU, P. 117
URL:
Reference Category:
Production
Pages:
Reference: BOWEN & GRAY 1957 .
URL:

Did You Know.......

A mine is a hole in the ground, owned by a liar.
-Mark Twain

About The MRDS Mines Database

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.

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