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Arcturus Mine

Occurrence in Pershing county in Nevada, United States with commodities Tungsten, Molybdenum, Manganese
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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. Mineral occurrence model information
  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. Workings at the site
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10111471
MRDS ID M242841
Record type Site
Current site name Arcturus Mine
Alternate or previous names Arcturus, NBMG Sample Site 2926

Geographic coordinates

Geographic coordinates: -119.23018, 40.70655 (WGS84)
Elevation 1338
Relative position ABOUT 10 MILES NE OF GERLACH

Site location context

Political divisions (FIPS codes)

Pershing(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Dry Mountain NW(quadrangle 1:24,000 scale)

Gerlach(quadrangle 1:100,000 scale)

Lovelock(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lower Quinn(hydrologic unit)

Black Rock Desert(hydrologic accounting unit)

Black Rock Desert-Humboldt(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 Pershing

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 033N 024E Nevada

Comments on the location information

  • ACCESSIBLE BY GOOD ROAD TO WITHIN 0.3 MILE, THEN STEEP. ON STEEP N SIDE OF SELENITE RANGE. ; INFO FROM LAND.ST :(1972)

Commodities

Commodity Importance
Tungsten Critical Primary
Molybdenum Tertiary
Manganese Critical Tertiary

Comments on the commodity information

  • 2926 WAS COLLECTED FROM THE CONTACT ZONE AND THE DUMP. THE SAMPLE LAMPED WELL WITH GOOD HIGH GRADE TUNGSTEN AND SOME POWELLITE. THE PROBLEM WITH THIS MINE WOULD BE IN DEVELOPING SUFFICIENT ORE RESERVES FOR ALTHOUGH IT APPEARS TO BE HIGH IN GRADE, THE TACTITE ZONE IS VERY NARROW.

Materials information

Materials Type of material
Powellite Ore
Scheelite Ore
Diopside Gangue
Epidote Gangue
Garnet Gangue
Hedenbergite Gangue
Quartz Gangue

Analytical data

Result SAMPLE 2926 FROM CONTACT ZONE AND DUMP CONTAINS 7 % FE, 1.5 % MG, 10 % CA, 0.15 % TI, 3000 PPM MN, 200 PPM B, 20 PPM CO, 20 PPM CR, 7 PPM CU, 50 PPM MO, 7 PPM NI, 20 PPM PB, 5 PPM SC, 100 PPM V, 700 PPM W 10 PPM Y, 500 PPM ZN, AND 20 PPM ZR.

Mineral occurrence model information

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

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Permian
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock
  • Host or associated Host
    Rock type Metamorphic Rock > Phyllite
  • Host or associated Host
    Rock type Metamorphic Rock > Schist

Nearby scientific data

(1) -119.23018, 40.70655
ListMap

Economic information

Ore body information

  • General form LENTICULAR
    Length 60.96M
    Width 1.52M

Controls for ore emplacement

  • Contact Zone Of Metasediments With Granite

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1941
Discoverer T. S. Dalton, Jack Dalton And John Durkin Of Gerlach

Mining district

District name Trego Mining Area

Land status

Ownership category BLM Administrative Area

Workings at the site

  • Type of workings Surface/Underground
    Length 134.11M

Comments on the workings information

  • CROSSCUT ADIT 440 FT LONG THAT IS 200 FT BELOW THE ORE BODY AND DOES NOT INTERSECT IT; DOZER CUT.

Comments on development

  • APPEARS TO HAVE BEEN WORKED IN ABOUT THE 1950'S. NO ACTIVITY AT TIME OF EXAMINATION IN 1985.

Reference information

Bibliographic references

  • Deposit

    QUADE, JACK, 5 JUN 85, NBMG FIELD EXAMINATION REPORT AND SAMPLE ANALYSIS.

  • Deposit

    NBMG STAFF, 1985, NBMG OFR 85-3.

  • Deposit

    JOHNSON, M. G., 1977, NBMG BULL 89, PL. I.

  • Deposit

    LEMMON, D. M., TWETO, O. C., 1962, USGS MR-25, P. 14. #5. STAGER, H. K. AND TINGLEY, J. V., IN PREPARATION, NBMG BULLETIN ON TUNGSTEN DEPOSITS OF NEVADA .

General comments

Subject category Comment text
Deposit NARROW BAND OF METASEDIMENTS IN CONTACT WITH GRANODIORITE. METASEDIMENTS HAVE SURVIVED EROSION IN PART BECAUSE THEY HAVE BEEN SILICIFIED, FORMING A THIN SELVAGE OF TACTITE. SCHEELITE-BEARING TACTITE IS EXPOSED AT THE SURFACE IN A LENS 50 FT LONG, 4-5 FT WIDE. THE ORE IS COARSE-GRAINED AND CONSISTS OF GARNET, EPIDOTE, QUARTZ, AND SCHEELITE, WITH AN AVERAGE CONTENT OF 1.0 % WO3. SURROUNDING THE ORE AND CONTINUING ALONG STRIKE FOR SEVERAL HUNDRED FEET IS BARREN TACTITE COMPOSED OF GARNET, HEDENBERGITE, QUARTZ, AND CALCITE. THE TACTITE IS INTERBEDDED WITH CALC-SILICATE HORNFELS, BIOTITE SCHIST, AND METAMORPHOSED VOLCANIC ROCKS, ALL OF WHICH DIP GENTLY SOUTHEAST INTO A LARGE GRANITE MASS THAT CONSTITUTES MOST OF THE RANGE. THE CONTACT BETWEEN GRANITE AND METAMORPHIC ROCKS IS STEEP, AND THE ORE-BEARING TACTITE IS PROBABLY CUT OFF BY GRANITE ABOUT 200 FT DOWN DIP. AT NE END OF PROPERTY, TACTITE OCCURS IN A BODY 200 FT LONG, 20 FT WIDE, OF GARNET, DIOPSIDE, AND SCHEELITE. HIGHEST
Deposit GRADE PARTS ARE 2-3 FT WIDE, CONTAINING 0.2-0.4 % WO3.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1987 La Pointe, D.D. (Tingley, J.V.) Nevada Bureau of Mines and Geology

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.