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Schofield Mine

Producer in Lincoln county in Nevada, United States with commodities Tungsten, Molybdenum, Zinc, Fluorine-Fluorite
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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. Mineral occurrence model information
  10. Host and associated rocks
  11. Nearby scientific data
  12. Geologic structures
  13. Ore body information
  14. Controls for ore emplacement
  15. Economic information about the deposit and operations
  16. Mining district
  17. Land status
  18. Ownership information
  19. Links to other databases
  20. Bibliographic references
  21. Reporter information

Geologic information

Identification information

Deposit ID 10107653
MRDS ID D001178
Record type Site
Current site name Schofield Mine
Alternate or previous names North Tem Piute, Y-Z Claims, NBMG Sample Sites 1455, 1456., Phylis, Rae Ella, Rae Ella Nos 2 and 3 Claims
Related records 10270988

Geographic coordinates

Geographic coordinates: -115.62393, 37.63218 (WGS84)
Elevation 2134
Relative position 85 MILES W OF CALIENTE

Site location context

Political divisions (FIPS codes)

Lincoln(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Monte Mountain(quadrangle 1:24,000 scale)

Timpahute Range(quadrangle 1:100,000 scale)

Caliente(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Sand Spring-Tikaboo Valleys(hydrologic unit)

Central Nevada Desert Basins(hydrologic accounting unit)

Central Nevada Desert Basins(hydrologic subregion)

Great Basin(hydrologic region)

Federal lands

Bureau of Land Management(Bureau of Land Management NV)

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

BLM(Federal land areas administered by BLM)

Geographic areas

Country State County
United States Nevada Lincoln

Public Land Survey System information

Meridian Township Range Section Fraction State
04S 56E 01 Nevada

Comments on the location information

  • INFO FROM LAND.ST :(1972)

Commodities

Commodity Importance
Tungsten Critical Primary
Molybdenum Secondary
Zinc Critical Secondary
Fluorine-Fluorite Critical Secondary

Materials information

Materials Type of material
Fluorite Ore
Molybdenite Ore
Powellite Ore
Scheelite Ore
Sphalerite Ore
Actinolite Gangue
Calcite Gangue
Clinozoisite Gangue
Diopside Gangue
Epidote Gangue
Garnet Gangue
Gypsum Gangue
Hematite Gangue
Limonite Gangue
Pyrite Gangue
Pyrrhotite Gangue
Quartz Gangue

Alteration

  • (Local) Silication

Analytical data

Result .3-.7% WO3 (MOODY ORE SHOOTS). TACTITE BETWEEN ORE SHOOTS RAN 0.2% WO3
Result GOUGE SAMPLE RAN 1.8 % WO3
Result ORE SAMPLE RAN 1.2 % WO3
Result TRENCH- 2.2% WO3. (MOODY ORE SHOOTS). TACTITE BETWEEN ORE SHOOTS RAN 0.2% WO3
Result GOUGE SAMPLE RAN 1.8 % WO3
Result ORE SAMPLE RAN 1.2 % WO3
Result TRENCH- 2.2% WO3.

Mineral occurrence model information

Model code 42
USGS model code 14a
Deposit model name W skarn

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Pilot;Pilot;Pilot;
    Rock description Pilot;Pilot;Pilot;

Nearby scientific data

(1) -115.62393, 37.63218
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Faults, Folds

Ore body information

  • Plunge 45-50S

Controls for ore emplacement

  • Tactite Zone Along Igneous Contact With Limestone; Minor Joints, Fractures, And Faults Of Small Displacement Are Mineralized.

Comments on the geologic information

  • THE SOUTHERN HALF OF THE MOODY ORE ZONE IS ON THE PROPERTY, WITH 4 ORE SHOOTS, 16 TO 200 FEET LONG, 4 TO 9 FEET THICK, EXTEND PROBABLY TO DEPTH OF 400 FEET. ORE SHOOTS OCCUR IN A SINGLE BAND OF TACTITE 20-110 FEET THICK ON WEST CONTACT WITH THE GRANITE; NARROWER BAND ON EAST CONTACT.

Economic information about the deposit and operations

Development status Producer
Commodity type Both
Deposit size Small
Significant No
Discovery year 1928
Discoverer Schofield Brothers Of Hiko
Year of first production 1938

Mining district

District name Tem Piute Districtdistrict

Land status

Ownership category BLM Administrative Area

Ownership information

  • Type Owner-Operator
    Owner Union Carbide
    First year 1983

Comments on the reserve resource information

  • INDICATED ORE: 35,600 STU WO3

Comments on development

  • THESE 40-53 CLAIMS ADJOIN THE LINCOLN MINE ON THE SOUTH. PRODUCTION HAS BEEN SPORADIC. NORTH TEMPIUTE MINING AND DEVELOPMENT CO. WAS ORGANIZED IN 1937 BY THE SCHOFIELD BROTHERS OF HIKO. THE MINE WAS OPERATING IN 1938 WITH A 50-TON MILL UNDER CONSTRUCTION. MILL WAS OPERATING IN 1941. USBM EXPLORED BOTH THIS DEPOSIT AND THE THE LINCOLN MINE IN 1942. THE PROPERTY WAS LEASED TO ATOLIA MINING CO IN 1946. UNION CARBIDE NOW OPERATES THE MINE INTERMITTENTLY AS PART OF ITS EMERSON MINE OPERATIONS. IT WAS LEASED TO Y-Z CO IN 1954 WHO PRODUCED UNTIL 1955.

Reference information

Bibliographic references

  • Deposit

    TSCHANTZ, CM AND PAMPEYAN, EH, 1970, GEOLOGY AND MINERAL DEPOSITS OF LINCOLN CO, NEV BUR MINES BULL 73

  • Deposit

    NBMG DISTRICT FILE 176, ITEM 4, 1963.

  • Deposit

    KENNEDY, F.A., 1941, NBMG DISTRICT FILE 176, ITEM 9.

  • Deposit

    NBMG DISTRICT FILE 176, PRESS CLIPPINGS.

  • Deposit

    WYANT, AND LEMMON, USGS OFR

  • Deposit

    KENNEDY, F.A., 1941, LETTER TO F.A. BRENDEL, NBMG DISTRICT FILE 216, ITEM 1.

  • Deposit

    SMITH, P. AND BENTZ, J., 1983, FIELD EXAMINATION REPORTS, OCT 4, 1983.

  • Deposit

    USBM, 1950, RI 4626

  • Deposit

    STAGER, H.K., TUNGSTEN IN NEVADA; NBMG BULL IN PREP.

  • Reserve-Resource

    LEMMON, P.M., UNPUBLISHED DATA

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-1980 Harner, Joy L. (Roberts, Ralph J.) U.S. Geological Survey
Updater 01-AUG-1984 La Pointe, D.D. (Tingley, J.V.) Nevada Bureau of Mines and Geology PARSED HOST ROCK AND ASSOCIATED ROCK INFORMATION FROM OLD SINGLE VALUED FIELD TO NEW MULTIVALUED FIELD
Editor 09-JUN-1995 Mosier, Dan 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 Nevada resources

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