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Indian Springs

Past Producer in Elko county in Nevada, United States with commodities Tungsten, Molybdenum, Fluorine-Fluorite, Antimony
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Geologic information

Identification information

Deposit ID 10174157
MRDS ID D002193
MAS/MILS ID 0320070016
Record type Site
Current site name Indian Springs
Alternate or previous names Gamble Ranch

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -114.2468, 41.6246 (WGS84)
Elevation 2047
Location accuracy 10(meters)
(click for info)

Geographic areas

Country State County
United States Nevada Elko

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 043 N 068 E 10 S2 Nevada

Comments on the location information

  • EASTERN CONTACT ZONE

Commodities

Commodity Importance
Tungsten Primary
Molybdenum Secondary
Fluorine-Fluorite Secondary
Antimony Secondary

Materials information

Materials Type of material
Molybdenite Ore
Powellite Ore
Scheelite Ore
Tetrahedrite Ore
Fluorite Ore
Actinolite Gangue
Calcite Gangue
Chalcedony Gangue
Epidote Gangue
Garnet Gangue
Muscovite Gangue
Opal Gangue
Orthoclase Gangue
Pyroxene Gangue
Quartz Gangue
Tremolite Gangue
Apatite Gangue
Montmorillonite Gangue
Perovskite Gangue
Topaz Gangue
Argentite Unknown
Bornite Unknown
Chalcocite Unknown
Chalcopyrite Unknown
Covellite Unknown
Galena Unknown
Goethite Unknown
Magnetite Unknown
Pyrite Unknown
Sphalerite Unknown

Alteration

  • (Local) Silication
  • (Local) Silicification
  • (Local) Sericitization
  • (Local) Argillization

Mineral occurrence model information

Model code 46
USGS model code 15a
Deposit model name W veins

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Quartz Monzonite
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Granite
    Rock unit name Indian Springs Stock
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Sandstone

Nearby scientific data

Ore Body (1) -114.2468, 41.6246
ListMap

Geologic structures

Type of structure Local
Structural terms Intrusive

Ore body information

  • General form stockwork
    Strike N30E
    Dip 90E
    Thickness 30M
    Depth to top 30M
    Width 150M
    Length 1524M
    Area 207HA
    Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 STOCKWORK
    Shape of Orebody #1 IRREGULAR
    Type of Orebody #2 REPLACEMENT
    Primary mode of Origin HYDROTHERMAL
    Secondary mode of Origin CONT METASOMATIC
    Primary Ore Control IGNEOUS
    Secondary Ore Control CONTACT ZONE
    Strike And Dip N30E
    Date of Last Modification 850814

Controls for ore emplacement

  • Faults:
  • Intrusive:

Comments on the geologic information

  • INDIAN SPRINGS TUNGSTEN DEPOSIT IS LOCATED ON THE GAMBLE RANCH, NEAR INDIAN SPRINGS, ON THE EASTERN SLOPE OF THE DELANO MTS. MOST OF THE HIGH-TEMPERATURE PNEUMATOLYTIC QUARTZ VEINS OCCUR ON EASTERN CONTACT OF THE INDIAN SPRINGS STOCK. THE BULK OF THE SCHEELITE OCCURS IN THE QUARTZ VEINS RATHER THAN THE NEARBY TACTITES. DIAMOND DRILL CORES FROM THE EASIER CONTACT ZONE HAVE SHOWN QUARTZ VEINS CONTAINING ABUNDANT PYRITE AND SOME MOLYBDENITE IN PEGMATITE LENSES, AND NEAR ZONES OF POTASSIC AND SERICITIC ALTERATION. MINOR AMOUNTS OF CHALCOPYRITE ARE ALSO PRESENT. MINERAL EXPLORATION IS CURRENTLY BEING CARRIED ON ON THE PROPERTY BY UTAH INTERNATIONAL, A DIVISION OF GENERAL ELECTRIC CORP.
  • SCHEELITE IN QUARTZ VEINS

Economic information

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Commodity type Metallic
Significant Yes
Discovery year 1951
Mining method Shrinkage Methods
Milling method Flotation

Mining district

District name Delano Area

Mineral rights holdings

Type of mineral rights Located Claim
Type of mineral rights Patented
Type of mineral rights Private Lease

Land status

Ownership category Mixed

Ownership information

  • Type Owner
    Owner Ludwig, Norman
    Home office 1325 Park View, Elko, Nv
    Year 1981
  • Type Owner
    Owner Azl Resources Inc., 5025 E. Washington Street, Phoenix
    Home office Arizona
    Year 1981
  • Type Operator
    Owner Utah International, Inc.
    Home office 550 California Street, San Francisco, CA
    Year 1981

Production statistics

  • Year 1974
    Material Ap_Grade: ^0.19-0.25 Percent WO3. Averaged for input to Production Details table.
    Accuracy Estimate
    Best? Y
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Primary WO3 Tungsten Tungsten 0wt-pct

Comments on the production information

  • UNION CARBIDE CORP. MINED ABOUT 12500 TONS OF ORE IN1974 AND 1975 THAT AVG 0.25 PERCENT WO3 BUT ONLY 125 TONS WAS MILLED AND YIELDED 14 UNITS OF WO3

Reserves and resources

  • Type In-situ
    Estimate year 1970
    Indicated 39,553,000mt ore
    Commodity Subtype Grade units Group Importance Year
    Tungsten Wo3 0.164 wt-pct Tungsten Major 1970
  • Type In-situ
    Estimate year 1970
    Indicated 12,610,000mt ore
    Commodity Subtype Grade units Group Importance Year
    Tungsten WO3 0.2649 wt-pct Tungsten Major 1970
  • Type In-situ
    Estimate year 1976
    Indicated 15,785,000mt ore
    Commodity Subtype Grade units Group Importance Year
    Tungsten WO3 0.19 wt-pct Tungsten Major 1976

Comments on the reserve resource information

  • RESOURCES AS OF 1/83.
  • MATRIX ONE IS A NONCUMULATIVE MATRIX OF AVAILABLE RESERVES.

Workings at the site

  • Type of workings Surface
    Area 149HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method PROPOSED
    Mining Method OPEN PIT
    Swell Factor .6
    Percent Waste Rock 75
    Avg. Overburden Thickness 0
    Primary Material Cover M-HARD ROCKS
    Percentage 100
    Hardness of Ore M-HARD ROCKS
    Avg. Bench Height (meters) 6
    Max. Pit Slope (degrees) 50
    Capacity 3175
    Capacity Units MT ORE/DAY
    Preprod. Stripping Vol. 0
    Unit Production Cost 6.15
    Units of Production $/MT ORE
    Operating Days per Year 250
    Operating Shifts per Day 2
    Year of Information 1981

Comments on development

  • DIAMOND DRILLING DONE

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
U.S. Bureau of Mines Minerals Availability System MAS 0320070016
USGS Mineral Resources Data System MRDS D002193 MAS references MRDS
USGS Mineral Resources Data System MRDS M233922 Entered into record 10046016 in new MRDS database

Bibliographic references

  • Deposit

    Stager, H.K., and Tingley, J.V., 1988, Tungsten deposits of Nevada: Nevada Bureau of Mines and Geology Bulletin 105, 256 p.

  • Reserve-Resource

    ENGINEERING AND MINING JOURNAL. FIRMS DEVELOPING A LARGE TUNGSTEN DEPOSIT IN ELKO COUNTY, NEVADA. V. 171, NUMBER 12, 1970, P. 96.

  • Deposit

    GRANGER, A. E., M. M. BELL, G. C. SIMMONS, AND F. LEE. GEOLOGY AND MINERAL RESOURCES OF ELKO COUNTY, NEVADA. NV BUREAU OF MINES AND GEOL. BULL. 54, 1957, 190 p.

  • Deposit

    HOPE, R. A., AND R. R. COATS. PRELIMINARY GEOLOGIC MAP OF ELKO COUNTY, NEVADA. U.S. GEOL. SURV. OPEN-FILE MAP 76-779, 6 SHEETS, 1976, SCALE 1:100,000.

  • Deposit

    OLSEN, D. R. GEOLOGY AND MINERALOGY OF THE DELNO MINING DISTRICT AND VICINITY, ELKO COUNTY, NEVADA. PH.D. DISS., UNIV. UT, SALT LAKE CITY, UT, 1960, 96 PP.

  • Deposit

    SLACK, J. STRUCTURE, PETROLOGY AND ORE DEPOSITS OF THE INDIAN SPRINGS (DELANO MOUNTAINS) REGION, ELKO COUNTY, NEVADA. M.S. THESIS, MIAMI UNIV., OXFORD, OH, 1972, 159 P.

  • Deposit

    SMITH, R. M. MINERAL RESOURCES OF ELKO COUNTY, NEVADA. U.S. GEOL. SURV. OFR 76-56, 1976, 194 PP.

General comments

Subject category Comment text
Deposit WATER MUST BE OBTAINED FROM WELLS AND POWER GENERATED AT THE SITE. THE PRESENT ACCESS ROAD NEEDS IMPROVEMENT. GENERAL LOCATION IS ABOUT 82 KM NE OF WELLS. GENERAL SIZE OF ORE BODY IS LARGE.

Reporter information

Type Date Name Affiliation Comment
Reporter 07-OCT-96 Spear, James M. U.S. Bureau of Mines
Reporter 01-AUG-79 Tingley, J.V. Nevada Bureau of Mines and Geology
Updater 01-JAN-84 Blaskowski, Michael J. (Elliott, James E.) Nevada Bureau of Mines and Geology
Updater 09-DEC-10 Causey, J. Douglas U.S. Geological Survey Combined info from MRDS record M233922 (Dep_ID 10046016) and deleted that record.