Oro Rico Penon Blanco

Producer in Mariposa county in California, United States with commodity Gold

Geologic information

Identification information

Deposit ID 10030836
MRDS ID M009286
Record type Site
Current site name Oro Rico Penon Blanco
Related records 10284930

Geographic coordinates

Geographic coordinates: -120.2371, 37.74714 (WGS84)
Relative position S. OF TUOLUMNE CO. LINE ON HIGHWAY 49
(click for info)

Geographic areas

Country State County
United States California Mariposa

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 02S 16E 19,20,29 California

Commodities

Commodity Importance
Gold Primary

Nearby scientific data

(1) -120.2371, 37.74714

Economic information

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Significant No

Ownership information

  • Type Operator
    Owner Oro Rico Mines Co.
    Home office C/O A. D. Vencile

Comments on the production information

  • ONE OF THE EARLIEST WORKED CLAIMS IN THE COUNTY. CONSIDERABLE DEVELOPMENT HAD BEEN MADE BY 1868 AND SEVERAL ORE SHOOTS 2-4 FT. THICK HAD BEEN DISCOVERED AND ORE AVERAGED $10 - $12 PER TON. WORKED INTERMITTENTLY UNTIL 1912; LITTLE OR NO WORK DONE UNTIL AFTER 1928 DUE TO LITIGATION; SOME EXPLORATION AND DEVELOPMENT DONE IN 1934; LITTLE OR NO WORK DONE SINCE. TOTAL PRODUCTION, ALTHOUGH INCOMPLETELY RECORDED, IS SMALL.

Comments on the workings information

  • ADITS, SHAFTS, TUNNELS, DRIFTING; IN 1954 TWO WORKINGS WERE STILL RECOGNIZABLE ON THE PENON BLANCO CLAIM BUT NONE ARE ACCESSIBLE WITHOUT SOME CLEANING OUT.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS M009286

Bibliographic references

  • Deposit

    CALIF. JOUR. MINES & GEOLOGY, V. 53, NOS. 1 & 2, JAN.-APRIL, 1957, PP. 147-148, 294; V. 53, NOS. 3 & 4, JULY-OCT., 1957, P. 551

  • Deposit

    DOM BULL. 108, 1934, P. 185-6

General comments

Subject category Comment text
Deposit CONSISTS OF THE PATENTED CLAIMS OLD JUDGE, SO. JUDGE, LITTLE JUDGE, PENON BLANCO AND NO. PENON BLANCO, AND UNPATENTED STAR AND STEVENSON, TOTALING MORE THAN 100 ACRES. COPPER PRODUCTION LESS THAN 100,000 LBS - DOM BULL. 144, PT. 3 1948, P. 269. LOCATION MAY OR NOT BE THE PROSPECTS SHOWN IN THE NE1/4 OF SEC. 19, SW1/4 SEC. 20, NW1/4 SEC. 29, U.S. GEOL. SURVEY QUAD. COULTERVILLE, CALIF., 1949

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1973 Gere, W. U.S. Geological Survey