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Copper Bluff

Past Producer in Humboldt county in California, United States with commodities Copper, Gold, Silver, Zinc
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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. Nearby scientific data
  9. Ore body information
  10. Economic information about the deposit and operations
  11. Production statistics
  12. Reserves and resources
  13. Links to other databases
  14. Bibliographic references
  15. Reporter information

Geologic information

Identification information

Deposit ID 10212434
MRDS ID W023655
MAS/MILS ID 0060230080
Record type Site
Current site name Copper Bluff
Alternate or previous names Hoopa Indian Tribe
Related records 10076572

Geographic coordinates

Point of reference Main Entrance
Geographic coordinates: -123.68614, 41.10953 (WGS84)
Elevation 128
Location accuracy 100(meters)

Site location context

Political divisions (FIPS codes)

Humboldt(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Hoopa(quadrangle 1:24,000 scale)

Hoopa(quadrangle 1:100,000 scale)

Weed(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Trinity(hydrologic unit)

Klamath(hydrologic accounting unit)

Klamath-Northern California Coastal(hydrologic subregion)

California(hydrologic region)

Federal lands

BIA(Federal land areas administered by BIA)

Geographic areas

Country State County
United States California Humboldt

Public Land Survey System information

Meridian Township Range Section Fraction State
Humboldt 008 N 004 E 02 NWSE California

Commodities

Commodity Importance
Copper Primary
Gold Secondary
Silver Secondary
Zinc Critical Tertiary

Materials information

Materials Type of material
Chalcopyrite Unknown
Quartz Unknown
Sphalerite Unknown
Quartz Unknown

Economic information

Ore body information

  • Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 REPLACEMENT
    Date of Last Modification 830316
  • Field Value
    MAS Matrix # 1
    MAS Column # 5
    Degree of Wallrock Alter. UNKNOWN
    Type of Wallrock Alter. #1 SILICIFICATION
    Type of Wallrock Alter. #2 PYRITIZATION
    Date of Last Modification 830316
  • Field Value
    MAS Matrix # 1
    MAS Column # 2
    Primary mode of Origin HYDROTHERMAL
    Date of Last Modification 830316
  • Field Value
    MAS Matrix # 1
    MAS Column # 3
    Shape of Orebody #1 TABULAR
    Date of Last Modification 830316
  • Field Value
    MAS Matrix # 1
    MAS Column # 4
    Primary Ore Control BEDDING
    Secondary Ore Control LITHOLOGY
    Date of Last Modification 830316
  • Strike N07E
    Dip 18E
    Thickness 2M
    Length 45M
    Width 35M
    Depth to top 135M
    Field Value
    MAS Matrix # 1
    MAS Column # 6
    Strike And Dip N07E:18E
    Minimum Depth to Top 0
    Date of Last Modification 830316
  • Area 20HA
    Field Value
    Total Surface Area (HA) 20
    Date of Last Modification 910418

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Year of first production 1957

Production statistics

  • Year 1957
    Description 43au;423ag;Gm/Mt:18.96cu;.93pb;%Conc 316 Mt Conc/Year
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Lead Lead 1wt-pct
    Major Copper Copper 19wt-pct
    Trace Silver Silver 423g/mt
    Trace Gold Gold 43g/mt
  • Year 1958
    Description 32au;450ag;Gm/Mt:20.15cu;1.31pb;% Conc 309 Mt Conc/Year
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Lead Lead 1wt-pct
    Major Copper Copper 20wt-pct
    Trace Silver Silver 450g/mt
    Trace Gold Gold 32g/mt
  • Year 1960
    Description 38au;411ag;Gm/Mt:14.57cu;.71pb;12.132n % 2505 Mt Conc/Year
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Zinc Zinc 12wt-pct
    Lead Lead 1wt-pct
    Major Copper Copper 15wt-pct
    Trace Silver Silver 411g/mt
    Trace Gold Gold 38g/mt
  • Year 1961
    Description 34au;320ag;Gm/Mt:16.34cu;1.02pb;7.582n% 4160 Mt Conc/Year
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Zinc Zinc 8wt-pct
    Lead Lead 1wt-pct
    Major Copper Copper 16wt-pct
    Trace Silver Silver 320g/mt
    Trace Gold Gold 34g/mt
  • Year 1962
    Description 27au;252ag;Gm/Mt:10.51cu;.72pb;15.182n% 1482 Mt Conc/Year
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Zinc Zinc 15wt-pct
    Lead Lead 1wt-pct
    Major Copper Copper 11wt-pct
    Trace Silver Silver 252g/mt
    Trace Gold Gold 27g/mt

Comments on the production information

  • MINE LAST OPERATED 1966, EXPLORATION BY EAGLE PITCHER CO. 1964

Reserves and resources

  • Type In-situ
    Estimate year 1964
    Measured 4mt ore
    Indicated 18mt ore
    Demonstrated 22mt ore
    Inferred 45mt ore
    Total resources 67mt ore
    Commodity Subtype Grade units Group Importance Year
    Zinc Zn 3.5 wt-pct Zinc Trace 1964
    Copper Cu 3 wt-pct Copper Major 1964
    Silver Ag 72 g/mt Silver Minor 1964
    Gold Au 7.2 g/mt Gold Minor 1964

Comments on the reserve resource information

  • MATRIX 1 TONNAGES ARE FROM DMEA DOCKET 3911
  • RESERVE DATA FROM 1964, BU. MINES GSCLZ COMPILATION.

Reference information

Bibliographic references

  • Reference

    CALIF. DIV.MINES AND GEOLOGY, BULL. 190 PGS 45,46,60, 1966

  • Reference

    CALIF. DIV. MINES AND GEOLOGY, GEO MAP OF CAL. WEED SHEET

  • Reference

    1963

  • Reference

    BU. MINES INDIAN STUDIES HOOPA VALLEY RESERVATION REPORT,

  • Reference

    1977

  • Deposit

    CALIF. JOUR MINES & GEOL. V 37 NO,4 OCT. 1941 P. 508 V. 39 J

  • Deposit

    43 P. 79 JULY 1943 P. 325 BULL.

  • Deposit

    LOC. ALSO IN TGN 4E SEC. 35

Reporter information

Type Date Name Affiliation Comment
Reporter 28-APR-1994 Western Field Operations Center (WFOC) U.S. Bureau of Mines

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.