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

Big Injun

Past Producer in Lake county in California, United States with commodity Mercury
Map
XML
JSON
KML
B
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. Alteration
  9. Nearby scientific data
  10. Geologic structures
  11. Ore body information
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Ownership information
  16. Production statistics
  17. Workings at the site
  18. Links to other databases
  19. Bibliographic references
  20. Reporter information

Geologic information

Identification information

Deposit ID 10040786
MRDS ID M055657
Record type Site
Current site name Big Injun
Related records 10163385

Geographic coordinates

Geographic coordinates: -122.71079, 38.76266 (WGS84)
Elevation 762
Relative position 7 MI W OF MIDDLETON

Site location context

Political divisions (FIPS codes)

Lake(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Whispering Pines(quadrangle 1:24,000 scale)

Healdsburg(quadrangle 1:100,000 scale)

Santa Rosa(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lower Sacramento(hydrologic accounting unit)

Sacramento(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Lake

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 011N 008W 35 California

Commodities

Commodity Importance
Mercury Primary

Materials information

Materials Type of material
Cinnabar Ore
Mercury Ore
Dolomite Gangue
Quartz Gangue

Alteration

  • (Local) Silica Carbonate Alteration Of Serpentine

Economic information

Geologic structures

Type of structure Local
Structure description Brecciation Of Sandstone, Serpentine - Sediment Contact

Ore body information

  • General form TABULAR ()
    Strike N 20 W
    Dip NE
    Width 9.14M

Controls for ore emplacement

  • Brecciated Zone And 2 Nw Trending Fault Zones

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1873
Discoverer "Injun Jeff"
Year of first production 1916
Production years 1916 - 1917, 1940 , 1955-1956

Mining district

District name East Mayacmas

Ownership information

  • Type Owner
    Owner Mrs. Alice Fisher Armstrong

Production statistics

  • Year 1962
    Period To 1962
    Material HG
    Accuracy Estimate
    Description Cp_Grade: ^8-20 Lb/Ton
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Mercury Mercury 6325g/mt

Comments on the reserve resource information

  • NO RESERVES INDICATED

Workings at the site

  • Type of workings Underground
    Length 304.8M
    Overall depth 30.48M

Comments on the workings information

  • PARTIALLY INACCESSIBLE

Comments on development

  • DMEA EXPLORATION PROJECT DENIED BECAUSE INFERRED RESERVES TOO SMALL

Reference information

Bibliographic references

  • Deposit

    HOLMES, G. W., JR., 1965, MERCURY IN CALIFORNIA: IN USBM IC 8252

  • Deposit

    BAILEY, E. H., USGS, PERSONAL FILES

  • Deposit

    YATES, R. G. AND HILPERT, L. S., 1946, QUICKSILVER DEPOSITS OF THE EASTERN MAYACMAS DISTRICT, LAKE AND NAPA COUNTIES, CALIFORNIA: CALIF. JOUR. OF MINES AND GEOLOGY, V. 42, P. 231 - 286

  • Deposit

    RANSOME, A. L. AND KELLOGG, J. L., 1939, QUICKSILVER RESOURCES IN CALIFORNIA: CALIF. JOUR. OF MINES AND GEOLOGY, V. 35, P. 353 - 486.

  • Deposit

    5) BRADLEY, W.W., 1918, QUICKSILVER RESOURCES OFCALIFORNIA: CJMG BULL. 78, 389 P.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1976 Peterson, Jocelyn A. U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

External references

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.