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  3. Mineral Resource Data System (MRDS)

Sweeney Prospect

Occurrence in Modoc 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. Nearby scientific data
  8. Economic information about the deposit and operations
  9. Links to other databases
  10. Bibliographic references
  11. General comments
  12. Reporter information

Geologic information

Identification information

Deposit ID 10031434
MRDS ID M010223
Record type Site
Current site name Sweeney Prospect

Geographic coordinates

Point of reference Centroid
Geographic coordinates: -120.1319, 41.93578 (WGS84)
Relative position Original record had no geographic coordinates; these coordinates were derived from the PLSS description provided.

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)

Federal lands

Modoc 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 Modoc

Public Land Survey System information

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

Commodities

Commodity Importance
Gold Primary
Silver Primary

Nearby scientific data

Centroid (1) -120.1319, 41.93578
ListMap

Economic information

Comments on the geologic information

  • GEOL.DESC: 200' TUNNEL IN BROWN RHYOLITE CUTS THROUGH 3 QUARTZ VEINS, UP TO 3' WIDE, WITH A NORTHERLY AND SOUTHERLY STRIKE AND A STEEP DIP TO THE W. ORE CARRIES COPPER, GOLD AND SILVER, A PICKED PIECE ASSAYING $137.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No

Reference information

Bibliographic references

  • Deposit

    CALIF. REPT. 25, P. 16

General comments

Subject category Comment text
Deposit AVERAGE SAMPLES SAID TO ASSAY $10-$15 IN AU AND AG AND 1% CU. THE CONTENT OF AG WAS ABOUT 3 OZ., WHICH WAS VALUED AT 50? PER OUNCE.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-73 Gere, W. 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.