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  3. Mineral Resource Data System (MRDS)

Long Mary

Producer in Mariposa county in California, United States with commodity Gold
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Public Land Survey System information
  6. Commodities
  7. Materials information
  8. Host and associated rocks
  9. Nearby scientific data
  10. Ore body information
  11. Economic information about the deposit and operations
  12. Mining district
  13. Workings at the site
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10109236
MRDS ID M009605
Record type Site
Current site name Long Mary
Related records 10237374

Geographic coordinates

Geographic coordinates: -120.13266, 37.49743 (WGS84)
Elevation 457
Relative position N1/2? (1/4 MI. N. OF MT. BULLION-HORNITOS RD. 6 MI. W. OF MT. BULLION.

Site location context

Political divisions (FIPS codes)

Mariposa(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Indian Gulch(quadrangle 1:24,000 scale)

Merced(quadrangle 1:100,000 scale)

San Jose(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Fresno River(hydrologic unit)

San Joaquin(hydrologic accounting unit)

San Joaquin(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Mariposa

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 005S 017E 17 California

Comments on the location information

  • UTM EST. N 1/2 ? MAY BE IN INDIAN GULCH ( 1962 ) 15 FT. QUAD. UTM MEASURED ON PROSPECT IN NE 1/4 SEC. 17 OR NW 1/4 SEC. 16.; LATITUDE-LONGITUDE VALUES CALCULATED FROM TOWNSHIP, RANGE, SECTION.

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Gold Ore
Pyrite Ore
Quartz Gangue

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Slate
    Stratigraphic age (youngest) Late Jurassic

Nearby scientific data

(1) -120.13266, 37.49743
ListMap

Economic information

Ore body information

  • Strike N 85 W
    Dip 65 SW
    Thickness 0.61M
    Depth to top 0M

Comments on the geologic information

  • GEOL.DESC: WALL ROCKS ARE UPPER JURASSIC MARIPOSA FORMATION

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1900
Production years 1900 - 1905 , 1908 - 1911 , 1914 - 1915

Mining district

District name Mt. Bullion

Comments on the production information

  • NO PRODUCTION SINCE 1915 , WORKINGS INACCESSIBLE

Workings at the site

  • Type of workings Surface
    Length 956.16M
    Overall depth 125.88M

Comments on the workings information

  • IN 1920, WORKINGS WERE A 413-FT. INCLINED SHAFT WITH 4 LEVELS AND AN ADIT 263 FT. LONG, PLUS 2471 FT. DRIFTS, RAISES AND STOPES.

Reference information

Bibliographic references

  • 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. 118 - 119 , 278 .

  • Deposit

    CASTELLO, W. O., 1921 , MINES AND MINERAL RESOURCES OF MARIPOSA COUNTY IN SEVENTEENTH REPORT OF THE STATE GEOLOGIST: CALIFORNIA STATE MINING BUREAU, P. 121.

  • Deposit

    LAIZURE, C. MCK., 1928 , SAN FRANCISCO FIELD DIVISION IN TWENTY-FOURTH REPORT OF THE STATE MINERALOGIST: CALIFORNIA STATE MINING BUREAU. P. 95 .

  • Deposit

    AUBURY, L. E., 1904 , REGISTER OF MINES AND MINERALS, MARIPOSA COUNTY CALIFORNIA: CALIFORNIA STATE MINING BUREAU, P. 11 .

  • Production

    BOWEN & GRAY 1957

General comments

Subject category Comment text
Deposit VEIN

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1973 Gere, W. U.S. Geological Survey
Updater 01-AUG-1991 Bowman, J. And Albers, J. U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

Maps centered on this site

Authoritative California resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.