Juniper

  

Mine Info

State: California

County: Mariposa

Elevation: 2,651 feet (808 meters)

Primary Mineral: Gold

Lat, Long: 37.55889, -120.14944



Juniper MRDS details

Site Name

Commodity

Location

Primary: "Juniper"
Secondary: "Juniper & Patricia"
Secondary: "Patricia & Charles"
Primary: Gold
Secondary: Silver
State: California
County: Mariposa
District:
 

Land Status

Holdings

Workings

Land ownership:
Administrative Organization:
Type: Surface/Underground


Ownership

Production

Deposit

Owner Name: Pereno C. Zirker, Et Al.
Company ID:
Percent:
Home Office:
Info Year:
Years: -

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

Name: Greenstone
Role: Host
Description:
Age Type: Host Rock
Age in Years:
Dating Method:
Material Analyzed:
Age Young: Late Jurassic
Age Old:


Analytical Data

Materials



Comments

Comment Type:
Deposit
Comment Discovery Year: 1850'S
Comment Type:
Deposit
Comment 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 Type:
Geology
Comment GEOL.DESC: MASSIVE AND SCHISTOSE GREENSTONE DERIVED FROM PYROXENE ANDESITE.
Comment Type:
Production
Comment 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 Type:
Deposit
Comment VEINS, TWO SETS 1 - 5 FT THICK. SOME VEIN OFFSHOOTS STRIKE NE WITH STEEPER DIP THAN MAIN VEINS.
Comment Type:
Workings
Comment 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 Type:
Location
Comment UTM ACC, SW 1/4 19 , NW 1/4 30 .


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. 115 - 116 , 272 .
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. 126 .
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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