American Eagle

The American Eagle is a copper and zinc mine located in Mariposa county, California.

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: American Eagle  

State:  California

County:  Mariposa

Elevation:

Commodity: Copper, Zinc

Lat, Long: 37.55944, -120.25417

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 American Eagle

American Eagle MRDS details

Site Name

Primary: American Eagle
Secondary: Bullion Hill
Secondary: Blue Bell
Secondary: And Bonanza


Commodity

Primary: Copper
Primary: Zinc
Secondary: Lead
Secondary: Gold
Secondary: Silver


Location

State: California
County: Mariposa


Land Status

Not available


Holdings

Not available


Workings

Type: Surface/Underground


Ownership

Owner Name: Jack I. And Irene Kopp Et Al.


Production

Not available


Deposit

Record Type: Site
Operation Category: Past Producer
Deposit Type: Replacement
Operation Type: Unknown
Discovery Year: 1890
Years of Production:
Organization:
Significant: N
Deposit Size: S


Physiography

General Physiographic Area: Pacific Mountain System
Physiographic Province: Pacific Border Province
Physiographic Section: California Trough


Mineral Deposit Model

Not available


Orebody

Form: TABULAR


Structure

Type: L
Description: Schistosity Trends North, Rocks Extremely Fissile, Crinkled And Folded; Crinkles In Schistosity Plung 50 - 70 North Or South, Suggest Zone Of Shearing.


Alterations

Alteration Type: L
Alteration Text: Hydrothermal, Sericitization


Rocks

Not available


Analytical Data

Analytical Data: OBTAINED FROM (ZONE A), CU 1.53 - 11.01 %, ZN 2.59 - 8.29 %, PB .71 - 1.02 %, AU .01 - .22 OZ/TON, AG .99 - 2.58 OZ/TON.


Materials

Ore: Sphalerite
Ore: Tetrahedrite
Ore: Galena
Ore: Chalcopyrite
Ore: Pyrite
Gangue: Quartz
Gangue: Sericite
Gangue: Calcite
Gangue: Barite


Comments

Comment (Production): NO PRODUCTION REPORTED

Comment (Deposit): 6 OVERLAPPING, EN ECHELON MINERALIZED ZONES, STRUNG OUT IN NW DIRECTION, OVER LENGTH OF 1000 FT. ONLY ONE (ZONE A) THE MOST WESTERLY, IS MOST PROMISING OF BEARING ORE OF ECONOMIC GRADE AND QUANITY.

Comment (Workings): 50 SHALLOW PITS, TRENCHES AND SHAFTS, ADIT CONSISTS OF 750 FT. OF HORIZONTAL WORKINGS, 2 WINZES; ONE 40 FT., THE OTHER FILLED. ONE 25 FT. HIGH STOPE. 7 DRILL HOLES BY BUREAU OF MINES TOTALLING 2,800 FT.

Comment (Geology): GEOL.DESC: ORE BODIES ARE ELONGATED PARALLEL TO SCHISTOSITY OF ENCLOSING SCHIST. ZONE A IS LOCATED IN SHEARED FELSITE BRECCIA OR TUFF NEAR CONTACT WITH MASSIVE FELSITE VOLCANIC ROCK. META VOLCANICS ARE CUT BY GREENSTONE DIKES.

Comment (Location): UTM ACC; LATITUDE-LONGITUDE VALUES CALCULATED FROM TOWNSHIP, RANGE, SECTION.


References

Reference (Deposit): ERIC, J. H., AND COX, M. W., 1948 , ZINC DEPOSITS OF THE AMERICAN EAGLE - BLUE MOON AREA, MARIPOSA COUNTY, CALIFORNIA; COPPER IN CALIFORNIA BULL. 144 ; DIV. OF MINES, P. 142 - 144 .

Reference (Deposit): BOWEN, O. E. AND CLIFFTON, G. H., 1957 , MINES AND MINERAL RESOURCES OF MARIPOSA COUNTY, CALIFORNIA; CALIF. JOUR. MINES AND GEOLOGY, VOL. 53 , NO. 1 & 2 , P. 199 - 200 .


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