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  3. Mineral Resource Data System (MRDS)

Grizzley Ridge

Past Producer in Nevada 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. Mining district
  13. Workings at the site
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10101304
MRDS ID C011630
Record type Site
Current site name Grizzley Ridge
Alternate or previous names Mcausland
Related records 10286171

Geographic coordinates

Geographic coordinates: -120.97771, 39.41238 (WGS84)
Elevation 762
Relative position 3 MI. N NORTH COLUMBIA

Site location context

Political divisions (FIPS codes)

Nevada(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Pike(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 009E 21 California

Comments on the location information

  • UTM EST. - NW 1/4

Commodities

Commodity Importance
Gold Primary
Silver Secondary
Copper Secondary

Materials information

Materials Type of material
Quartz Gangue

Analytical data

Result OWNER REPORTS VALUES AS FOLLOWS: $40 AU/TON, 1 1/4 % CU, 17 OZ. AG/TON

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Slate

Nearby scientific data

(1) -120.97771, 39.41238
ListMap

Economic information

Ore body information

  • Strike N
    Dip 70 E
    Depth to top 0M

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name North Columbia

Workings at the site

  • Type of workings Surface/Underground
    Length 24.38M
    Overall depth 24.38M

Comments on the workings information

  • OPEN CUTS & TUNNEL

Reference information

Bibliographic references

  • Deposit

    MACBOYLE, E., 1919 , MINES AND MINERAL RESOURCES OF NEVADA COUNTY: CALIFORNIA JOURNAL OF MINES AND GEOLOGY, V. 16 , P. 184 .

  • Deposit

    HOBSON, J. B., WILTSEE, E. A., 1893 , NEVADA COUNTY: CALIFORNIA JOURNAL OF MINES AND GEOLOGY, V. 11 , P. 307 - 308 .

  • Deposit

    AUBURY, L. E., 1908 , COPPER RESOURCES OF CALIFORNIA: CALIFORNIA STATE MINING BUREAU, BULLETIN, NO. 50 , P. 204 .

General comments

Subject category Comment text
Deposit VEIN, ONE MAIN, W/HANGING WALL AND FOOTWALL VEINS COMING NEARLY TOGETHER, HANGING WALL VEIN RANGES FROM 1/2 - 1 FT. THICK, SHOWS COARSE SPECIMEN GOLD, LARGE PERCENTAGE FINE SULFIDES

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1979 Bowman, J. And 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.