Eureka

The Eureka is a gold mine located in Amador 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

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.

Site Name

Primary: Eureka
Secondary: Old Eureka
Secondary: Amador Consolidated
Secondary: Hetty Green
Secondary: Hayward.

Commodity

Primary: Gold

Location

State: California
County: Amador

Land Status

Land ownership: Private
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.

Holdings

Not available

Workings

Not available

Ownership

Owner Name: Central Eureka Mining Co.

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: L

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

Not available

Materials

Ore: Gold

Comments

Comment (Production): TOTAL PRODUCTION FIGURES NOT AVAILABLE BUT 12 TO 13 MILLION DOLLARS IS A FAIR ESTIMATE JUDGING FROM KNOWN OUTPUT FOR SEVERAL YEARS. RICHEST PART WAS 1000 FT DOWN FROM SURFACE WHERE ORE AVERAGED $27 A TON. FIVE HUNDRED FOOT ORE SHOOT BOTTOMED BETWEEN 1700 AND 1800 FT WITH ORE VARYING GREATLY. AVERAGE GRADE ASSAYED ABOUT $35 A TON.

Comment (Workings): TWO VEINS CALLED 'BOULDER LEDGE' AND 'TRUE LEDGE' WERE WORKED. THE 'BOULDER LEDGE' WAS ON WEST, 15 TO 20 FT THICK YIELDING $10 A TON, HAVING BEST GRADE BETWEEN 800 AND 1350 FT LEVELS. 'TRUE LEDGE' VARIED FROM 3 TO 15 FT IN THICKNESS IN THE MIDDLE LEVELS, AND WAS MUCH HIGHER GRADE.

Comment (Geology): GEOL.DESC: MAIN VEIN HAD SLATE FOOTWALL, HEAVY GOUGE, AND META-ARDESITE HANGING WALL.

Comment (Deposit): THIS CLAIM ADJOINS THE CENTRAL EUREKA MINE. OWNERS OF THE CENTRAL EUREKA PURCHASED THIS PROPERTY AROUND 1926 , AND CONNECTED THE TWO WORKINGS BY AN UPPER ADIT. OLD EUREKA DISCOVERED 1852 , SUCCESSFULLY OPERATING UNTIL 1881 . THE DEPTH OF THE MINE WAS THEN 1965 FT.

References

Reference (Deposit): LOGAN, C.A., 1927 , SACRAMENTO FIELD DIV., AMADOR COUNTY: CMB REPT 23 , P. 178

Reference (Deposit): USGS FOLIO 63, P. 8, CLAIM SHEET 1, SEC. 1

Reference (Deposit): DOM BULL.108, P.75, PL.3

Reference (Production): LOGAN, C.A., 1927

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.