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

Alta

Producer in Calaveras county in California, United States with commodity Gold
Map
XML
JSON
KML
C
Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Materials information
  7. Host and associated rocks
  8. Nearby scientific data
  9. Ore body information
  10. Economic information about the deposit and operations
  11. Workings at the site
  12. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10029011
MRDS ID M006333
Record type Site
Current site name Alta

Geographic coordinates

Geographic coordinates: -120.49517, 38.01269 (WGS84)
Elevation 305
Relative position NEAR MELONES AND CARSON HILL

Site location context

Political divisions (FIPS codes)

Calaveras(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Columbia(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)

Federal lands

USBR(Federal land areas administered by USBR)

Geographic areas

Country State County
United States California Calaveras

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Gold Ore
Quartz Gangue

Host and associated rocks

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

Nearby scientific data

(1) -120.49517, 38.01269
ListMap

Economic information

Ore body information

  • Strike NW
    Dip E

Comments on the geologic information

  • GEOL.DESC: HANGING WALL DIORITE, FOOTWALL SLATE

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No

Workings at the site

  • Type of workings Surface/Underground
    Length 15.24M
    Overall depth 7.62M
    Overall length 7.32M

Comments on the workings information

  • DEVELOPED BY OPEN CUT AND 50 FT. ADIT

Reference information

Bibliographic references

  • Deposit

    ERIC, J.H., STROMQUIST, A.A., SWINNEY, C.M., 1955 , GEOLOGY OF THE ANGELS CAMP AND SONORA QUADRANGLES, CALAVERAS AND TUOLUMNE COUNTIES, CALIFORNIA: CALIFORNIA DIVISION OF MINES SPECIAL REPORT 41 , P. 48 AND PL. 3

  • Deposit

    KERR, M.B., 1900 , REGISTER OF MINES AND MINERALS, COUNTY OF CALAVERAS, CALIF.: CALIF. MIN. BUR.

General comments

Subject category Comment text
Deposit VEIN

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-1979 Mateik, R.; Albers, John P. 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.