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Sugarman and Negro

Past Producer in Tuolumne 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. Workings at the site
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10077943
MRDS ID W026026
Record type Site
Current site name Sugarman and Negro
Alternate or previous names Sugarman and Nigger

Geographic coordinates

Geographic coordinates: -120.37072, 38.00769 (WGS84)
Elevation 802
Relative position ABOUT 2 MILES N. OF SONORA, ON W. SLOPE OF BALD MOUNTAIN.

Site location context

Political divisions (FIPS codes)

Tuolumne(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Columbia SE(quadrangle 1:24,000 scale)

San Andreas(quadrangle 1:100,000 scale)

Sacramento(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Tuolumne(hydrologic unit)

San Joaquin(hydrologic accounting unit)

San Joaquin(hydrologic subregion)

California(hydrologic region)

Federal lands

Bureau of Land Management(Bureau of Land Management CA)

Bureau of Land Management CA BLM(Type of land area)

BLM(Federal land areas administered by BLM)

Geographic areas

Country State County
United States California Tuolumne

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 002N 015E 19,30 S2SW (19) California

Commodities

Commodity Importance
Gold Primary
Silver Primary

Comments on the commodity information

  • Ore Was Of Gem Quality

Materials information

Materials Type of material
Gold Ore
Petzite Ore
Sylvanite Ore
Silver Ore
Quartz Ore
Mica Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
    Rock unit name Calaveras Formation
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Slate
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Quartzite
    Rock unit name "Boulder Vein" of Mother Lode system
  • Host or associated Host
    Rock type Metamorphic Rock > Schist > Mica Schist

Nearby scientific data

(1) -120.37072, 38.00769
ListMap

Economic information

Ore body information

  • Strike N 57 E
    Dip 60 NW

Comments on the geologic information

  • Geol.Desc: Granite Dikes Intersect Quartz Veins Where Pocket Occur. Dike Pinches And Swells, 8 To 60 Ft In Thickness, Dipping S.

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Workings at the site

  • Type of workings Underground
    Area 10.927HA

Comments on the workings information

  • Four Drift Adits; Lower Adit 1800 Ft, 80 Ft. Below Higher Adit 500 Ft. One Shaft On Each Of The Two Claims

Reference information

Bibliographic references

  • Deposit

    Logan, C.A., 1949 , Mines And Min. Res. Of Tuolumne County: Cdm 6 Rept. 45 , P. 72

  • Deposit

    Tucker, W.B., 1914 , Tuolumne County: Cmb Rept. 14 , P. 163

  • Production

    Logan, C.A., 1949

  • Deposit

    California Joural Mines And Geology, V. 45, No. 1, Jan 1949, P. 72, Pl 8

  • Deposit

    Report of the State Mineralogist, By California State Mining Bureau, Published by State Office, 1916, PP. 974, P. 163

  • Deposit

    Emerson, D.O., 1958, County index to the minerals of California

General comments

Subject category Comment text
Deposit Pocket Deposits
General Situated on the west slope of Bald Mountain, 2 miles north of Sonora. It is a pocket mine in mica schist of the Calaveras formation. The vein has a course of N. 57? E., and dip 60? NW. Two tunnels on the vein; lower tunnel 1800 feet in length, and 80 feet above it another one 500 feet long. The ore shoots or pockets occur near east and west granite crossings, which reefs are from 8 to 60 feet wide and dip to the south. Rich pockets are formed at the point where these crossings come in contact with the vein in a belt of black slate, also with quartz stringer feeders having same course as vein, but dipping faster into the main vein near a crossing. The quartz is free milling, containing coarse gold associated with tellurides of gold and silver. Two men are employed. C. F. Smith and C. R. Watson et al., of Sonora. owners.
Deposit Worked Intermittantly Since 1850 .

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1978 Albers, J. U.S. Geological Survey
Reporter 07-JAN-1997 Western Field Operations Center (WFOC) U.S. Bureau of Mines

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.