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  3. Mineral Resource Data System (MRDS)

Gold Bug

Past Producer in Mariposa county in California, United States with commodities Gold, Silver
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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. Ownership information
  14. Production statistics
  15. Workings at the site
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10102874
MRDS ID M009526
Record type Site
Current site name Gold Bug
Related records 10163243

Geographic coordinates

Geographic coordinates: -120.09293, 37.63631 (WGS84)
Relative position 7 1/2 MI. SE OF COULTERVILLE

Site location context

Political divisions (FIPS codes)

Mariposa(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Buckhorn Peak(quadrangle 1:24,000 scale)

Oakdale(quadrangle 1:100,000 scale)

San Jose(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Merced(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 003S 017E 28,33 California

Comments on the location information

  • IN SOLOMON GULCH 1 MI. W OF BLACK BART MINE IN SEC 27 . SE 1/4 28 ? NE 1/4 33 ? UTM EST.

Commodities

Commodity Importance
Gold Primary
Silver Secondary

Comments on the commodity information

  • THE HIGH GRADE POCKETS TEND TO OCCUR WHERE THE VEIN IS ENTIRELY IN SLATE AND WHERE THERE IS ABUNDANT CALCITE. THE PRINCIPAL ORE SHOOT MINED IS SAID TO HAVE AVERAGED MORE THAN $115/TON.

Materials information

Materials Type of material
Gold Ore
Calcite Gangue
Quartz Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock
    Stratigraphic age (youngest) Late Permian
  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
  • Host or associated Host
    Rock type Metamorphic Rock > Metavolcanic Rock > Mafic Metamorphic Rock > Greenstone

Nearby scientific data

(1) -120.09293, 37.63631
ListMap

Economic information

Ore body information

  • General form PINCH & SWELL
    Thickness 1.52M

Comments on the geologic information

  • GEOL.DESC: VEIN, FEW IN TO SEVERAL FT. BETWEEN CONTACT OF HANGING WALL SLATE & MASSIVE GREENSTONE. FOOTWALL: RICHEST ORE SHOOT WAS 40 - 50 FT. WIDE AND 110 FT. ALONG DIP OF VEIN. VEIN ACCOMPANIED IN PLACES BY ALBITITE & DIORITE DIKES SIMILAR TO OTHER MINES IN THE CAT TOWN AND FLYAWAY DISTRICTS.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Production years 1880S, 1890S, 1908 , 1937 - 40

Mining district

District name Cat Town

Ownership information

  • Type Operator
    Owner N. D. Madden And K. I. Goulder

Production statistics

  • Year 1940
    Period - 1940
    Material ORE
    Accuracy Accurate
    Description Cp_Grade: ^3.5 Oz/Ton Au
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 99g/mt

Comments on the production information

  • PRODUCED SEVERAL THOUSAND DOLLARS WORTH OF GOLD FROM NEAR-SURFACE POCKETS IN 1880'S AND 1890'S; OPERATED IN 1908 AND IN LATE 1930'S AND IN 1940. ORE SHOOT MINED 1937-1940 CONTAINED 225 TONS OF ORE WHICH RAN SLIGHTLY MORE THAN 3.5 OZ. OF GOLD AND 0.75 OZ. SILVER PER TON.

Workings at the site

  • Type of workings Underground
    Overall depth 21.34M

Comments on the workings information

  • A 200-FT. ADIT PENETRATES VEIN TO VERTICAL DEPTH OF 70 FT.

Reference information

Bibliographic references

  • Deposit

    BOWEN, O. E., JR., & GRAY, H., JR., 1957 , MINES AND MINERAL DEPOSITS OF MARIPOSA COUNTY, CALIF.: CALIF. JOUR. MINES & GEOL., VOL. 53 , NOS. 1 & 2 , P. 102 , 264 .

  • Deposit

    JULIHN, C. E., & HORTON, F. W., 1940 , MINERAL RESOURCES SURVEY OF THE US.: US BUREAU OF MINES BULL. 424 , P. 142 .

  • Production

    BOWEN & GRAY, 1957

General comments

Subject category Comment text
Deposit VEIN, ORE SHOOTS
Deposit SEVERAL UNPATENTED CLAIMS.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1973 Gere, W. U.S. Geological Survey
Updater 01-JAN-1979 Hayden, F. (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.