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Andrew Tungsten Mine

Past Producer in Los Angeles county in California, United States with commodity Tungsten
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Geologic information

Identification information

Deposit ID 10115273
MAS/MILS ID 0060370615
Record type Site
Current site name Andrew Tungsten Mine
Alternate or previous names Andrew Group, Alron #1, Alron #2, Tiffany-Andrew Group, 4 Hi #1, Curtis Claims, Cattle Canyon Placers

Geographic coordinates

Point of reference Main Entrance
Geographic coordinates: -117.6849, 34.2582 (WGS84)
Elevation 1408
Location accuracy 100(meters)
(click for info)

Geographic areas

Country State County
United States California Los Angeles

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 002 N 008 W 14 SWNESW California

Commodities

Commodity Importance
Tungsten Primary

Materials information

Materials Type of material
Calcite Unknown
Quartz Unknown
Scheelite Unknown

Nearby scientific data

Main Entrance (1) -117.6849, 34.2582
ListMap

Ore body information

  • Area 150HA
    Field Value
    Total Surface Area (HA) 150
    Date of Last Modification 910418

Economic information

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Commodity type Metallic
Significant Yes
Discovery year 1953
Mining method Open Stope - Overhand
Year of first production 1974
Year of last production 1992
Milling method Gravity

Mining district

District name San Antonio

Mineral rights holdings

Type of mineral rights Located Claim

Land status

Ownership category National Forest

Ownership information

  • Type Owner-Operator
    Owner Curtis Tungsten, Inc.
    Interest 100
    Home office California
    Year 1990

Production statistics

  • Year 1974
    Description Concentrate At 32.63% Wo3 1491 Pounds Of Concentrate/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Primary WO3 concentrate Tungsten Tungsten 1mt 33wt-pct
  • Year 1975
    Description Concentrate At 49.92% Wo3 2814 Pounds Of Concentrate/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Primary WO3 concentrate Tungsten Tungsten 1mt 50wt-pct
  • Year 1976
    Description Concentrate At 32.93% Wo3 2137 Pounds Of Concentrate/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Primary WO3 concentrate Tungsten Tungsten 1mt 33wt-pct
  • Year 1977
    Description Concentrate At 21.20% Wo3 5626 Pounds Of Concentrate/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Primary WO3 concentrate Tungsten Tungsten 3mt 21wt-pct
  • Year 1978
    Description Con. Shipped 276 Kg Con
  • Year 1979
    Description Con. Shipped 235 Kg Con
  • Year 1980
    Description Con. Shipped 353 Kg Con
  • Year 1982
    Description Con. Shipped 1217 Kg Con

Comments on the production information

  • PRODUCT "A" IS STOCKPILED.
  • MINE AND MILL IN PRODUCTION. . PAST PRODUCER OF SCHEELITE CONCENTRATES FROM TALUS CONES.

Reserves and resources

  • Type In-situ
    Estimate year 1982
    Inferred 10,599,999mt ore
    Indicated 1,059,999mt ore
    Total resources 11,659,998mt ore
    Commodity Subtype Grade units Group Importance Year
    Tungsten Wo3 2.7 wt-pct Tungsten Major 1982

Comments on the reserve resource information

  • RESOURCES CONTAINED IN TALUS DEPOSIT. RESOURCES IN WEST VEIN. RESOURCES IN WEST VEIN EXTENTION.
  • FORMERLY LISTED UNDER SEQ. NO. 0060370585A. THIS HAS BEEN A SMALL AND INTERMITTANT PRODUCER OF SCHEELITE SINCE 1977. IN 1989 FOLLOWING YEARS OF HEARINGS AND COURT CASES WITH FEDERAL AND STATE REGULATORS, AND BATTLES WITH PRESERVATIONISTS, ANDREW "AS NEEDED" BASIS. PUBLIC RESERVE GRADE AND TONNAGE FROM A COMPANY OFFICIAL. SEE 02/26/91 PHONE LOG IN DEPOSIT FILE AKA: ANDREW TUNGSTEN

Workings at the site

  • Type of workings Underground
    Length 420M
    Overall depth 0M
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ACTUAL
    Mining Method OPEN STOPE
    Percent Recovery 100
    Hardness of Rock HARDROCK WITH LITTLE WATER
    Rock Characteristics MULTIPLE SYSTEMS OF WEAKNESS PLANES
    Rock Support Chars. SUPPORTING
    Mine Support Chars. POST, HEADBOARD, CAPS, ROOF BOLTS
    Length of Inclines (m) 0
    Avg. Length of Adits (m) 140
    Number of Adits 3
    1st Condition of Workings OPEN
    Capacity 293
    Capacity Units MT ORE/DAY
    Unit Production Cost 30.31
    Units of Production $/MT ORE
    Operating Days per Year 260
    Operating Shifts per Day 3
    Year of Information 1989

Comments on other economic factors

  • RECORD TMODE-1011 TMCOS IS INCLUDED IN SHIPPING COST FROM ONTARIO TO FT MADISON. T-DES IS RAILHEAD IN ONTARIO
  • MILL RECOVERY IS 49-53 PERCENT. TAILS ARE STOCKPILED FOR FUTURE RE-PROCESSING.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
U.S. Bureau of Mines Minerals Availability System MAS 0060370615

Bibliographic references

  • Reserve-Resource

    CURTIS, R.L. PERSONAL COMMUNICATION. NOV. 1985

  • Reserve-Resource

    GRABER, D. TUNGSTEN MINERALIZATION AT THE ANDREW CURTIS MINE, MT. SAN ANTONIO QUADRANGLE, LOS ANGELES COUNTY, CALIFORNIA. PAPER IN GEOLOGY AND MINERAL WEALTH OF THE CALIFORNIA TRANSVERSE RANGES. SOUTH COAST GEOLOGICAL SOCIETY, 1982. PP 423-430.

  • Deposit

    EVANS, JAMES, 1977 IN MINERAL RESOURCES OF THE SHEEP MOUNTAIN WILDERNESS STUDY AREA AND THE CUCAMONGA WILDERNESS AND ADDITIONS, LOS ANGELES AND SAN BERNARDINO COUNTIES, CALIFORNIA, USGS OFR 77-251.

  • Deposit

    HAMILTON, KATHY, 1981, RESULTS OF VEHICLE INTERACTION WITH BIGHORN SHEEP IN COW-CATTLE CANYONS (YEAR 1), UNIV. OF NEVADA, UNPUB.

  • Deposit

    RIDENOUR, JAMES, SCHMAUCH, S.W., AND ZILKA, N.T., ECONOMIC APPRAISAL OF MINERAL RESOURCES OF THE SHEEP MOUNTAIN WILDERNESS STUDY AREA, LOS ANGELES AND SAN BERNARDINO COUNTIES, CALIFORNIA. U.S. GEOL. SURV. BULL. 1506-D, 1982, PP. 62-67.

  • Deposit

    U.S.FOREST SERVICE, ENVIRONMENTAL ASSESSMENT FOR A SPECIAL USE PERMIT FOR FORMER ROAD 2NO6 FOR CURTIS TUNGSTEN UPLAND, CA

Reporter information

Type Date Name Affiliation Comment
Reporter 02-MAR-95 Raney, Russell G. U.S. Bureau of Mines
Updater 06-DEC-10 Causey, J. Douglas U.S. Geological Survey Minor changes