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Bowie Estate

Past Producer in Calaveras county in California, United States with commodities Chromium, Iron
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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. Mining district
  12. Mineral rights holdings
  13. Land status
  14. Ownership information
  15. Workings at the site
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10187477
MRDS ID M004643
MAS/MILS ID 0060090564
Record type Site
Current site name Bowie Estate
Alternate or previous names J.W. Bowie Claims
Related records 10027955

Geographic coordinates

Point of reference Main Entrance
Geographic coordinates: -120.5543, 37.94881 (WGS84)
Elevation 360
Location accuracy 100(meters)

Site location context

Political divisions (FIPS codes)

Calaveras(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

New Melones Dam(quadrangle 1:24,000 scale)

Oakdale(quadrangle 1:100,000 scale)

San Jose(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

Bureau of Land Management(Bureau of Land Management CA)

Bureau of Land Management CA BLM(Type of land area)

BLM(Federal land areas administered by BLM)

Geographic areas

Country State County
United States California Calaveras

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 001 N 013 E 09 NESESW California

Commodities

Commodity Importance
Chromium Critical Tertiary
Iron Tertiary

Materials information

Materials Type of material
Chromite Unknown
Magnesite Unknown
Serpentine Unknown
Talc Unknown
Uvarovite Unknown

Nearby scientific data

Main Entrance (1) -120.5543, 37.94881
ListMap

Economic information

Ore body information

  • Strike N30W
    Dip 35N
    Thickness 1M
    Length 20M
    Width 5M
    Area 1HA
    Depth to top 0M
    Field Value
    Type of Orebody #1 DISSEMINATED
    Shape of Orebody #1 TABULAR
    Shape of Orebody #2 IRREGULAR
    Primary mode of Origin MAGMATIC DIFFER
    Primary Ore Control LITHOLOGY
    Degree of Wallrock Alter. INTENSE
    Type of Wallrock Alter. #1 CARBONITIZATION
    Strike And Dip N30W:35N
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 0
    Min. Thick. Unconsol. Mat. 0
    Total Surface Area (HA) 1
    Date of Last Modification 820226

Economic information about the deposit and operations

Operation type Surface-Underground
Development status Past Producer
Commodity type Metallic
Significant No
Discovery year 1918
Year of first production 1918

Mining district

District name French Creek District

Mineral rights holdings

Type of mineral rights Patented
Type of mineral rights Located Claim

Land status

Ownership category Federal

Ownership information

  • Type Owner
    Owner U.S. Bureau Of Land Management
    Interest 100
    Home office California
    Year 1976

Workings at the site

  • Type of workings Surface
    Area 1HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Mining Method OPEN PIT
    Swell Factor .6
    Avg. Overburden Thickness 0
    Primary Material Cover M-HARD ROCKS
    Percentage 100
    Hardness of Ore M-HARD ROCKS
  • Type of workings Underground
    Length 3M
    Overall depth 3M
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Mining Method OPEN STOPE
    Swell Factor .6
    Hardness of Rock SOFT NONPLASTIC WITH LITTLE WATER
    Rock Characteristics MULTIPLE SYSTEMS OF WEAKNESS PLANES
    Rock Support Chars. UNSUPPORTING NO FLOW
    Mine Support Chars. TIMBER W/LAGGING CONCRETE-UNREINFOR
    Number of Shafts 1
    Length of Inclines (m) 0
    Slope of Inclines 0
    Avg. Length of Adits (m) 0
    1st Condition of Workings UNKNOWN

Reference information

Bibliographic references

  • Deposit

    CAL. DIV. MINES GEOL. BULL 134 PT3 CHAP 2 P.44-45 PL 5

  • Deposit

    CAL. DIV MINE GEOL. BULL 145 PL.2

  • Deposit

    CAL. COUNTY REPT NO.2 P21,28 & PL.D 1962

  • Deposit

    COOP WAR MINERALS INVEST PROJ CALAVERAS CO NO.2, TALIAFERO,

General comments

Subject category Comment text
Deposit CATER (1948)STATES THAT ORE RAN 34-42 PERCENT CR2O3.ASSUME 3. THE BOWIE ESTATE CONSISTS OF NUMEROUS SMALL DEPOSITS. TH IT DESCRIBED & LOCATED HERE IS FROM PARAGRAPH 4 OF CATERS TION OF THE BOWIE ESTATE. CATER MENTIONS THAT THERE MAYBE M LL,UNDISCOVERED DEPOSITS ON THE PROPERTY. THE AVERAGE MINABLE GRADE OF CHROMITE IS 38 PERCENT & IRON 9 T. INSUFFICIENT DATA FOR MATRIXCALCULATIONS. ANALYSIS BY CDMG IN 1976 GAVE FOLLOWING PERCENTAGES-MASSIVE 2 13.30,CR2O3 35.81,FEO 12.22,TOTAL FE 14.79,AL203 10.39,MGO CR/FE 2.13.

Reporter information

Type Date Name Affiliation Comment
Reporter 05-NOV-1984 Unknown 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.