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Sweeney Prospect

Producer in Modoc county in California, United States with commodities Gold, Silver, Copper
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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. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10076899
MRDS ID W024199
Record type Site
Current site name Sweeney Prospect
Related records 10188721

Geographic coordinates

Geographic coordinates: -120.14272, 41.90792 (WGS84)
Elevation 1585

Site location context

Political divisions (FIPS codes)

Modoc(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Mount Bidwell(quadrangle 1:24,000 scale)

Cedarville(quadrangle 1:100,000 scale)

Alturas(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Surprise Valley(hydrologic unit)

North Lahontan(hydrologic accounting unit)

North Lahontan(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Modoc

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 047N 016E 28 California

Comments on the location information

  • ON SOUTHEAST SLOPE OF BIDWELL PEAK AT NORTH END OF SURPRISE VALLEY

Commodities

Commodity Importance
Gold Primary
Silver Primary
Copper Primary

Materials information

Materials Type of material
Gold Ore
Quartz Gangue

Analytical data

Result AVERAGE ASSAYS $10-15/TON AU+AG, 1% CU. PICKED PIECE ASSAYED $137/TON

Host and associated rocks

  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
    Stratigraphic age (youngest) Pliocene

Nearby scientific data

(1) -120.14272, 41.90792
ListMap

Economic information

Ore body information

  • General form VEINS
    Strike N-S
    Dip STEEP W
    Thickness 0.91M

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No

Comments on the workings information

  • 200 FT TUNNEL

Reference information

Bibliographic references

  • Deposit

    AVERILL, C.V., 1929, MODOC COUNTY, IN 25TH REPORT OF THE STATE MINERALOGIST: CALIFORNIA DIVISION OF MINES AND MINING, P. 16

General comments

Subject category Comment text
Deposit 3 VEINS. THE TYPE OF DEPOSIT IS UNKNOWN; USGS MODEL MAY ALSO BE 25A: HOT-SPRING AU-AG.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-1991 Peterson, Jocelyn A. U.S. Geological Survey
Updater 01-DEC-1994 Li, Zhiping (Peters, S.) 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.