American Eagle

  

Mine Info

State: California

County: Mariposa

Elevation:

Primary Mineral: Copper, Zinc

Lat, Long: 37.55944, -120.25417



American Eagle MRDS details

Site Name

Commodity

Location

Primary: "American Eagle"
Secondary: "Bullion Hill"
Secondary: "Blue Bell"
Secondary: "And Bonanza"
Primary: Copper
Primary: Zinc
Secondary: Lead
Secondary: Gold
Secondary: Silver
State: California
County: Mariposa
District:
 

Land Status

Holdings

Workings

Land ownership:
Administrative Organization:
Type: Surface/Underground


Ownership

Production

Deposit

Owner Name: Jack I. And Irene Kopp Et Al.
Company ID:
Percent:
Home Office:
Info Year:
Years: -

Record Type: Site
Operation Category: Past Producer
Deposit Type: Replacement
Plant Type:
Plant Subtype:
Operation Type: Unknown
Mining Method:
Milling Method:
Year First Production:
Year Last Production:
Discovery Year: 1890
Discovery Method:
Years of Production:
Organization:
Significant: N
Deposit Size: S


Physiography

Mineral Deposit Model

Orebody

General Physiographic Area: Pacific Mountain System
Physiographic Province: Pacific Border Province
Physiographic Section: California Trough
Physiographic Detail:
Name:
Form: TABULAR


Structure

Alterations

Rocks

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


Analytical Data

Materials

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


Comments

Comment Type:
Production
Comment NO PRODUCTION REPORTED
Comment Type:
Deposit
Comment 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 Type:
Workings
Comment 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 Type:
Geology
Comment 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 Type:
Location
Comment UTM ACC; LATITUDE-LONGITUDE VALUES CALCULATED FROM TOWNSHIP, RANGE, SECTION.


References

Reference Category:
Deposit
Pages:
Reference: 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 .
URL:
Reference Category:
Deposit
Pages:
Reference: 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 .
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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