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Black Pearl Mine

Past Producer in Yavapai county in Arizona, United States with commodities Tungsten, Semiprecious Gemstone, Quartz, Bismuth, Beryllium, Fluorine-Fluorite, Gold, Silver, Molybdenum, 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. Alteration
  9. Host and associated rocks
  10. Nearby scientific data
  11. Ore body information
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Land status
  16. Ownership information
  17. Production statistics
  18. Workings at the site
  19. Links to other databases
  20. Bibliographic references
  21. General comments
  22. Reporter information

Geologic information

Identification information

Deposit ID 10027556
MRDS ID M003351
Record type Site
Current site name Black Pearl Mine
Alternate or previous names Camp Wood Tungsten Mine
Related records 10161782

Geographic coordinates

Geographic coordinates: -113.03548, 34.68754 (WGS84)
Elevation 1737
Relative position 19 MILES BY ROAD NE OF BAGDAD AND 17 MILES FROM CAMP WOOD.

Site location context

Political divisions (FIPS codes)

Yavapai(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Behm Mesa(quadrangle 1:24,000 scale)

Bagdad(quadrangle 1:100,000 scale)

Prescott(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Burro(hydrologic unit)

Bill Williams(hydrologic accounting unit)

Lower Colorado(hydrologic subregion)

Lower Colorado(hydrologic region)

Geographic areas

Country State County
United States Arizona Yavapai

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 015N;015N 007W;008W 18,07,08;;12,13 Arizona

Comments on the location information

  • INFO FROM LAND.ST :(1992)

Commodities

Commodity Importance
Tungsten Critical Primary
Semiprecious Gemstone Secondary
Quartz Secondary
Bismuth Critical Tertiary
Beryllium Critical Tertiary
Fluorine-Fluorite Critical Tertiary
Gold Tertiary
Silver Tertiary
Molybdenum Tertiary
Copper Tertiary

Materials information

Materials Type of material
Bismuthinite Ore
Chalcopyrite Ore
Gold Ore
Molybdenite Ore
Pyrite Ore
Scheelite Ore
Silver Ore
Specularite Ore
Wolframite Ore
Beryl Gangue
Biotite Gangue
Hornblende Gangue
Muscovite Gangue
Orthoclase Gangue
Quartz Gangue

Alteration

  • (Local) Oxidized At Least 40 Feet Below Out Crop.

Analytical data

Result 0.12 % BI
Result 0.15 - 0.5 % BEO, 0.922 % & 0.784 % WO3 AVERAGE

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Pegmatite
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Host
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Hornblendite

Nearby scientific data

(1) -113.03548, 34.68754
ListMap

Economic information

Ore body information

  • General form TABULAR, EN ECHELON
    Strike N 72 W
    Dip 80 S
    Length 487.68M
    Width 0.91M

Controls for ore emplacement

  • Faulting

Comments on the geologic information

  • SPECULARITE IS ABUNDANT AND APPEARS TO BE CONCENTRATED IN OR VERY CLOSE TO BARREN PARTS OF THE VEIN WITH LITTLE OR NO WOLFRAMITE.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Both
Deposit size Small
Significant No
Discovery year 1914
Year of first production 1915
Production years 1915-1935, 1951-1956

Mining district

District name Camp Wood District

Land status

Ownership category State

Ownership information

  • Type Operator
    Owner Hillside Mining And Milling Co.
    First year 1956
  • Type Owner
    Owner John Lawlor
    First year 1973

Production statistics

  • Year 1935
    Period 1915 - 1935
    Material CONC
    Accuracy Accurate
    Description Cp_Grade: ^70 % Wo3
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Wo3 Conc. Tungsten Tungsten 70wt-pct

Comments on the production information

  • WORKED AT INTERVALS 1915-1919, 1926, AND 1929-1936, WITH OUTPUT OF 2,170 UNITS OF WO3, CONCENTRATED BY HAND.

Workings at the site

  • Type of workings Underground
    Length 792.48M
    Overall depth 76.2M

Comments on the workings information

  • OPEN STOPING, ADITS AND SHAFTS.

Reference information

Bibliographic references

  • Deposit

    DALE, V.B., 1961, TUNGSTEN DEPOSITS OF GILA, YAVAPAI, MOHAVE COUNTIES, ARIZONA: U.S.B.M. INFORMATION CIRCULAR 8078, P. 43.

  • Deposit

    WILSON, E.D., 1941, TUNGSTEN DEPOSITS OF ARIZONA: ARIZONA BUREAU OF MINES BULLETIN 148, P. 21.

  • Deposit

    LEMMON, D.M., AND TWETO, O.L., 1962, TUNGSTEN IN THE U.S., USGS MAP MR-25.

  • Deposit

    ANDERSON, C.A., 1955, USGS PP 278.

  • Deposit

    LEMMON, D.M., UNPUBLISHED DATA.

  • Deposit

    PHILLIPS, K.A., 1987, ARIZONA INDUSTRIAL MINERALS: ARIZONA DEPARTMENT OF MINES AND MINERAL RESOURCES MINERAL REPORT 4, 185 P.

  • Deposit

    SAWYER, M.B., GURMENDI, A.C., DALEY, M.R., AND HOWELL, S.B., 1992, PRINCIPAL DEPOSITS OF STRATEGIC AND CRITICAL MINERALS IN ARIZONA: UNITED STATS BUREAU OF MINES SPECIAL PUBLICATION, 334 P.

  • Other Database

    CIMRI

General comments

Subject category Comment text
Deposit THIS RECORD CONTAINS INFORMATION FROM DUPLICATE RECORD D000838 OF JAMES ELLIOTT WHICH HAS BEEN DELETED FROM MRDS. ; INFO.SRC : 1 PUB LIT
Deposit First Production Year: 19151956
Deposit VEIN PINCHES OUT AT BOTH ENDS. COARSELY CRYSTALLINE QUARTZ IS GANGUE MINERAL. QUARTZ ENCLOSES ORE.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-APR-1972 Gere, W. U.S. Geological Survey
Updater 01-MAR-1979 Johnson, Kris H. (Creasey, S.C.) U.S. Geological Survey
Updater 01-JUN-1993 Orris, Greta J. 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 Arizona resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.