Juniper

The Juniper is a gold mine located in Mariposa county, California at an elevation of 2,651 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

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: Juniper
Secondary: Juniper & Patricia
Secondary: Patricia & Charles

Commodity

Primary: Gold
Secondary: Silver

Location

State: California
County: Mariposa

Land Status

Not available

Holdings

Not available

Workings

Type: Surface/Underground

Ownership

Owner Name: Pereno C. Zirker, Et Al.

Production

Year: 1940
Time Period: - 1940
Material type: ORE AUG
Description: Cp_Grade: ^1.04 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

Name: Greenstone
Role: Host
Age Type: Host Rock
Age Young: Late Jurassic

Analytical Data

Not available

Materials

Not available

Comments

Comment (Deposit): Discovery Year: 1850'S

Comment (Deposit): A PATENTED CLAIM OF 20 ACRES AND SEVERAL UNPATENTED CLAIMS. ORIGINALLY INCLUDED THE JUNIPER, INDEPENDENCE, STARLIGHT (PATRICIA) AND MT. VIEW LODE CLAIMS AND THE INDEPENDENCIO PLACER CLAIM. (ONE OF THE CLAIMS APPARENTLY WAS RENAMED THE CHARLES.)

Comment (Geology): GEOL.DESC: MASSIVE AND SCHISTOSE GREENSTONE DERIVED FROM PYROXENE ANDESITE.

Comment (Production): RANGE OF ORE GRADE FROM 14.4 OZ AU, 4 OZ AG PER TON TO 0.35 OZ AU/TON. ACTIVE 1882 . LAST OPERATION 1933 - 1937 . PRODUCTION RECORDS ARE INCOMPLETE.

Comment (Deposit): VEINS, TWO SETS 1 - 5 FT THICK. SOME VEIN OFFSHOOTS STRIKE NE WITH STEEPER DIP THAN MAIN VEINS.

Comment (Workings): ON JUNIPER, 500-FT. ADIT, STOPES, TOTALING 800 FT. OF WORKINGS; ON STARLIGHT, OR PATRICIA, 320-FT. VERTICAL SHAFT WITH SEVERAL HUNDRED FEET OF DRIFTS.

Comment (Location): UTM ACC, SW 1/4 19 , NW 1/4 30 .

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. 115 - 116 , 272 .

Reference (Deposit): LAIZURE, C. MCK., 1928 , SAN FRANCISCO FIELD DIVISION IN TWENTY-FOURTH REPORT OF THE STATE MINERALOGIST: CALIFORNIA STATE MINING BUREAU. P. 126 .

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.