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Nassau

Past Producer in Calaveras county in California, United States with commodities Copper, Zinc, Silver, 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. Workings at the site
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10102645
MRDS ID M005993
Record type Site
Current site name Nassau
Alternate or previous names Goat Ranch, Poole
Related records 10187281

Geographic coordinates

Geographic coordinates: -120.64907, 38.04435 (WGS84)
Relative position NW 1/4 SEC. 9 , NW 1/4 SEC. 10 ; 5 MILES NORTH OF COPPEROPOLIS.

Site location context

Political divisions (FIPS codes)

Calaveras(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Salt Spring Valley(quadrangle 1:24,000 scale)

San Andreas(quadrangle 1:100,000 scale)

Sacramento(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Stanislaus(hydrologic unit)

San Joaquin(hydrologic accounting unit)

San Joaquin(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Calaveras

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 002N 012E 10 California

Commodities

Commodity Importance
Copper Primary
Zinc Critical Primary
Silver Secondary
Gold Secondary

Materials information

Materials Type of material
Chalcopyrite Ore
Pyrite Ore
Sphalerite Ore

Analytical data

Result AVG. .2 OZ/TON AU, 4.6 OZ/TON AG, 5.2 % CU, 17.9 % ZN.

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Slate

Nearby scientific data

(1) -120.64907, 38.04435
ListMap

Economic information

Ore body information

  • General form LENTICULAR
    Thickness 0.61M

Comments on the geologic information

  • GEOL.DESC: FOOTWALL IS SLATE, HANGING WALL IS DIORITE

Economic information about the deposit and operations

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

Comments on the production information

  • NASSAU COPPER COMPANY ACQUIRED IN 1900 - BY 1908 $70,000 OF COPPER ORE HAD BEEN MINED. OPERATED INTERMITTENLY THROUGH 1919 - NO PRODUCTION REPORTED.

Workings at the site

  • Type of workings Underground
    Length 789.43M
    Overall depth 131.06M

Comments on the workings information

  • CONSISTS OF 430 FT. VERTICAL SHAFT, LEVELS AT 95 AND 200 FT. DRIFTS EXTEND NORTH 200 AND 240 FT., SOUTH 800 AND 820 FT., UPPER AND LOWER LEVELS RESPECTIVELY.

Reference information

Bibliographic references

  • Deposit

    CLARK, W.B. AND LYDON, P.A., 1962 , MINES AND MINERAL RESOURCES OF CALAVERAS COUNTY, CALIFORNIA; COUNTY REPT. 2 ; CALIF. DIV. MINES AND GEOLOGY, P. 28 , 133

  • Deposit

    ERIC, J.H., 1948 , COPPER IN CALIFORNIA BULL. 144 ; DIV. OF MINES, P. 221 .

General comments

Subject category Comment text
Deposit PARALLEL HIGH GRADE ORE BODIES IN NARROW BODY OF METADIABASE.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1972 Gere, W. U.S. Geological Survey
Updater 01-JUN-1978 Fraticelli, L. A. (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.