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Unnamed Prospect

Occurrence in Nevada county in California, United States with commodities Copper, Molybdenum, 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. Land status
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10031983
MRDS ID M011995
Record type Site
Current site name Unnamed Prospect

Geographic coordinates

Geographic coordinates: -120.56102, 39.43767 (WGS84)
Relative position SW1/4

Site location context

Political divisions (FIPS codes)

Nevada(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

English Mountain(quadrangle 1:24,000 scale)

Truckee(quadrangle 1:100,000 scale)

Chico(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Yuba(hydrologic unit)

Lower Sacramento(hydrologic accounting unit)

Sacramento(hydrologic subregion)

California(hydrologic region)

Federal lands

Tahoe National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States California Nevada

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 018N 013E 07 California

Commodities

Commodity Importance
Copper Primary
Molybdenum Primary
Silver Primary
Gold Primary

Materials information

Materials Type of material
Chalcopyrite Ore
Molybdenite Ore
Pyrite Ore
Quartz Gangue

Analytical data

Result ASSAYS ACROSS VEIN
Result .315 - .163 % CU, .083 - .259 % MO WITH TRACES OF GOLD AND .2 OZ AG.

Host and associated rocks

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

Nearby scientific data

(1) -120.56102, 39.43767
ListMap

Economic information

Ore body information

  • Length 7.62M

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No

Land status

Ownership category National Forest

Comments on the production information

  • 2 TONS MINED AND STOCKPILED IN 1918

Comments on the workings information

  • 40 FT. ADIT AND SEVERAL DRILL HOLES

Reference information

Bibliographic references

  • Deposit

    MINERALS FOR INDUSTRY, NORTHERN CALIF.; SUMMARY OF GEOLOGICAL SURVEY OF 1955 - 1961 , VOL. 2 ; SOUTHERN PACIFIC CO., 1964 , P. 24 - 25 AND 61

General comments

Subject category Comment text
Deposit QUARTZ VEINS, LENSES, AND STRINGERS IN METAVOLCANIC ROCKS, AVG. THICKNESS 1 FT.; ONE VEIN IS 3 FT. THICK, STRIKES N 60 - 70 E, DIPS 60 S; ANOTHER IS 4 FT. THICK, STRIKES N 80 E TO E - W, DIPS 40 S; AND ANOTHER IS 1 FT. THICK, STRIKES N 80 E AND DIPS STEEPLY SOUTH. MOLYBDENITE BEARING QTZ. VEINS ARE EMPLACED ALONG E - W STRIKING AND STEEPLY DIPPING JOINT SETS IN GRANODIORITE.

Reporter information

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