Jumper

  

Mine Info

State: California

County: Mariposa

Elevation: 2,999 feet (914 meters)

Primary Mineral: Gold

Lat, Long: 37.55833, -120.14611



Jumper MRDS details

Site Name

Commodity

Location

Primary: "Jumper"
Secondary: "Jumper & Bear"
Primary: Gold
Secondary: Silver
Secondary: Copper
State: California
County: Mariposa
District:
 

Land Status

Holdings

Workings

Land ownership:
Administrative Organization:
Type: Surface/Underground


Ownership

Production

Deposit

Owner Name: C. H. Burt
Company ID:
Percent:
Home Office:
Info Year:
Years: 1917 - 1940

Year: 1922
Time Period: Through 1922
Mined:
Material type: AG
Description: Ap_Grade: ^1.7 Oz Ag/Ton
Year: 1922
Time Period: Through 1922
Mined:
Material type: AU
Description: Ap_Grade: ^14.4 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



Analytical Data

Materials

Ore: Gold
Gangue: Quartz


Comments

Comment Type:
Deposit
Comment Discovery Year: 1850'S
Comment Type:
Commodity
Comment GOLD IS FREE
Comment Type:
Location
Comment UTM ACC. N 1/2
Comment Type:
Deposit
Comment ORIGINALLY CONSISTED OF 2 CLAIMS, THE JUMPER AND COLD SPRINGS, OR BEAR. IN SEPTEMBER, 1954, WORKINGS WERE MOSTLY WATERED AND PARTLY FILLED WITH DEBRIS. THERE WAS A SMALL GIBSON MILL AND A STEAM ENGINE ON THE PROPERTY. MINE IS REFERRED TO IN REPORT OF STATE MINERALOGIST XXIV, P. 91-2, AND PAGE 133. P. 91 INDICATES LOCATION AS SEC. 30, 4S, 16E, AND P. 133 GIVES LOCATION AS SEC. 25, 4S, 16E. HOWEVER, THE DESCRIPTION OF THE LOCATION SHOWN IN THE 1957 REFERENCE WOULD INDICATE THAT IT IS IN SEC. 30, 4S, 17E. COPPER PRODUCTION 0-100,000 LBS. - D.O.M. BULL. 144, PT. 3, 1948, P. 268 GOLD NOT VISIBLE TO THE NAKED EYE.
Comment Type:
Deposit
Comment VEIN-TWO NEARLY FLAT, LAMINATED QUARTZ VEINS ONE ABOVE THE OTHER. A FEW INCHES TO MORE THAN 4 FEET THICK.
Comment Type:
Workings
Comment SEPT 1954 THERE WERE 3 INCLINED SHAFTS LESS THAN 100 FT APART, 2 VERTICAL SHAFTS OPEN TO AT LEAST 100 FT, 3 OTHER CAVED SHAFTS & NUMEROUS PARTLY CAVED STOPES & OPEN CUTS.


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. 114 - 5 .
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. 91 .
URL:
Reference Category:
Deposit
Pages:
Reference: ERIC, J. C., 1948 , TABULATION OF COPPER DEPOSITS OF CALIFORNIA IN COPPER IN CALIFORNIA: CALIFORNIA DIVISION OF MINES BULLETIN 144 P. 268 .
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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