Malvina

  

Mine Info

State: California

County: Mariposa

Elevation: 1,949 feet (594 meters)

Primary Mineral: Gold

Lat, Long: 37.69806, -120.20250



Malvina MRDS details

Site Name

Commodity

Location

Primary: "Malvina"
Primary: Gold
Secondary: Silver
Secondary: Lead
Secondary: Copper
State: California
County: Mariposa
District: Coulterville
 

Land Status

Holdings

Workings

Land ownership:
Administrative Organization:
Type: Surface


Ownership

Production

Deposit

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:
Discovery Method:
Years of Production:
Organization:
Significant: N
Deposit Size: M


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
Gangue: Ankerite


Comments

Comment Type:
Location
Comment UTM EST. ; INFO FROM LAND.ST :UNDETERMINED
Comment Type:
Production
Comment NO PRODUCTION SINCE 1942 . TOTAL PRODUCTION PROBABLY IN EXCESS OF $1,000,000 , TOTAL RECORDED PRODUCTION $867,000 .
Comment Type:
Deposit
Comment VEIN, AVG. 10 FT. THICK
Comment Type:
Workings
Comment TWO SHAFTS. MAIN SHAFT HAS FIVE LEVELS. MOST ORE STOPED ABOVE 600 FT. LEVEL.
Comment Type:
Geology
Comment GEOL.DESC: LOGAN ( 1935 ) MENTIONS A STRIP OF GREENSTONE ON THE HANGING WALL SIDE. THE VEIN HAS FORMED A FEW HUNDRED FEET FROM THE CONTACT BETWEEN MARIPOSA FM AND PYROXENE ANDESITE GREENSTONE OF THE PENON BLANCO MEMBER OF THE AMADOR GROUP. THE MARIPOSA SLATE OCCUPIES A SYNCLINAL TROUGH FAULTED OFF ON THE NORTHEAST BY THE MAIN BRANCH OF THE MOTHER LODE THRUST. WEST OF THE MALVINA VEIN & N OF THE PATSOI CLAIM ARE CONGLOMERATIC BEDS NEAR THE BASE OF THE MARIPOSA FM CONTAINING QUARTZ AND SLATE PEBBLES. MARIPOSA IS IN GRADATIONAL CONTACT WITH THE AMADOR GREENSTONES.


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. 122 - 126 , 280 .
URL:
Reference Category:
Deposit
Pages:
Reference: CASTELLO, W. O., 1921 , MINES AND MINERAL RESOURCES OF MARIPOSA COUNTY IN SEVENTEENTH REPORT OF THE STATE GEOLOGIST: CALIFORNIA STATE MINING BUREAU, P. 123 .
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. 97 .
URL:
Reference Category:
Deposit
Pages:
Reference: LOGAN, C. A., 1935 , THE MOTHER LODE BELT OF CALIFORNIA: CALIFORNIA DIVISION OF MINES BULLETIN 108 , P. 183 - 184 .
URL:
Reference Category:
Deposit
Pages:
Reference: 5) AUBURY, L. E., 1904 , REGISTER OF MINES AND MINERALS, MARIPOSA COUNTY CALIFORNIA: CALIFORNIA STATE MINING BUREAU, P. 12 .
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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