1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Dempsey Ranch

Occurrence in Yuba county in California, United States with commodity Copper
Map
XML
JSON
KML
D
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. Ore body information
  9. Economic information about the deposit and operations
  10. Land status
  11. Links to other databases
  12. Bibliographic references
  13. General comments
  14. Reporter information

Geologic information

Identification information

Deposit ID 10034321
MRDS ID M021081
Record type Site
Current site name Dempsey Ranch
Related records 10142008

Geographic coordinates

Geographic coordinates: -121.28771, 39.18045 (WGS84)

Site location context

Political divisions (FIPS codes)

Yuba(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Smartsville(quadrangle 1:24,000 scale)

Yuba City(quadrangle 1:100,000 scale)

Chico(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Bear(hydrologic unit)

Lower Sacramento(hydrologic accounting unit)

Sacramento(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Yuba

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 015N 006E 03 California

Commodities

Commodity Importance
Copper Tertiary

Analytical data

Result 35 % CU

Economic information

Ore body information

  • Width 121.92M

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No

Land status

Ownership category Military Reservation

Comments on the workings information

  • SOME PROSPECT HOLES AND A 100 FT. ADIT

Reference information

Bibliographic references

  • Deposit

    AUBURY, L.E., 1908 : COPPER RESOURCES IN CALIFORNIA BULL. 50: CALIF. MIN. BUR., P. 205

  • Deposit

    ERIC, J.H., 1948 : COPPER IN CALIFORNIA BULL. 144 : DIV. OF MINES, P. 357

General comments

Subject category Comment text
Deposit WIDE GOSSAN CROPPINGS
Deposit INTRESTING SURFACE INDICATIONS, NO OTHER INFORMATION AVAILABLE

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-1979 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.