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Dean Claims

Occurrence in Pershing county in Nevada, United States with commodity Tungsten
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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. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10111447
MRDS ID M232543
Record type Site
Current site name Dean Claims
Alternate or previous names Porter-May Property
Related records 10222035

Geographic coordinates

Geographic coordinates: -118.82599, 40.34989 (WGS84)
Elevation 1402

Site location context

Political divisions (FIPS codes)

Pershing(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Seven Troughs SE(quadrangle 1:24,000 scale)

Lovelock(quadrangle 1:100,000 scale)

Lovelock(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Granite Springs Valley(hydrologic unit)

Truckee(hydrologic accounting unit)

Central Lahontan(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 029N 028E 27,23,33,34 Nevada

Comments on the location information

  • UTM APPROTIMATE

Commodities

Commodity Importance
Tungsten Critical Primary

Materials information

Materials Type of material
Scheelite Ore
Epidote Gangue
Garnet Gangue
Quartz Gangue

Analytical data

Result SAMPLE 2938 OF VEINS WITHSULFIDE MATERIAL CONTAINS 5 % FE, 0.5 % MG, 1 % CA, 0.07 % TI, 500 PPM MN, 7 PPM AG, 3000 PPM AS, +2000 PPM B, 50 PPM BA, 7 PPM BE, 30 PPM BI, 7 PPM CO, 20 PPM CR, 150 PPM CU, 20 PPM NI, 200 PPM PB, 5 PPM SC, 20 PPM SN, 150 PPM SR, 50 PPM V, 200 PPM W, 10 PPM Y, 30 PPM ZR, 130 PPM ZN.

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 Triassic
  • Host or associated Host
    Rock type Metamorphic Rock > Hornfels
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Shale
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone

Nearby scientific data

(1) -118.82599, 40.34989
ListMap

Economic information

Ore body information

  • General form TABULAR, PINCH AND SWELL
    Strike N30-50E
    Dip STEEP E TO 90
    Thickness 0.91M
    Width 1.83M

Controls for ore emplacement

  • In Vein Area-Brecciated Zones

Comments on the geologic information

  • IN THE VEIN AREA SCHEELITE OCCURS IN BRECCIATED ZONES WITHIN THE VEINS AND ON THE VEIN MARGINS, USUALLY ASSOCIATED WITH MANGANESE AND LIMONITIC GOSSAN. THE VEINS STRIKE N 30 TO 50 DEGREES E AND RANGE FROM VERTICAL TO STEEPLY EAST IN DIP. VEIN AREA IS HIGHLY FRACTURED. THE VEINS PINCH AND SWELL ALONG BOTH STRIKE AND DIP RANGING FROM 2 INCHES TO 3 FEET IN THICKNESS. SCHEELITE CONTENT IS ERRATIC. IN THE "TACTITE" AREA IN THE NEXT CANYON SOUTH OF THE VEIN, SCHEELITE OCCURS IN A DISCONTINUOUS E-W STRIKING GARNET-EPIDOTE TACTITE ZONE, UP TO 6 FEET IN WIDTH.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1971
Discoverer Duane Portert Of Lovelock

Mining district

District name Seven Troughs District

Land status

Ownership category BLM Administrative Area

Comments on development

  • EXPLORATION WAS DONE ON THE CLAIMS FOR TUNGSTEN, 1971-1972, 1975. 1971 EXPLORATION BY NL INDUSTRIES; 1972 BY UNION CARBIDE WHO DID SOME TRENCHING AND DRILLING. NO ACTIVITY IN 1985.

Reference information

Bibliographic references

  • Deposit

    TINGLEY, J.V., 1975, DEAN CLAIMS, SEVEN TROUGHS MINING DISTRICT, PERSHING COUNTY, NEVADA; UNPUBLISHED REPORT.

  • Deposit

    STAGER, H.K., IN PREPARATION, NBMG BULLETIN ON TUNGSTEN IN NEVADA.

  • Deposit

    QUADE, JACK, 7 JUN 85, NBMG FIELD EXAMINATION AND SAMPLE ANALYSIS.

General comments

Subject category Comment text
Deposit EXPLORATION WITHIN THE DEAN PROPERTY (1971-72, 1975) HAS BEEN CONCENTRATED IN TWO GENERAL AREAS. TO THE NORTH A SWARM OF QUARTZ VEINS CONTAINING ERRATIC CONCENTRATIONS OF SCHEELITE, AND TO THE SOUTH WORK WAS DONE ON A THIN, DOSCONTINUOUS TACTITE ZONE CONTAINING SMALL AMOUNTS OF DISSEMINATED SCHEELITE. VOLUME OR GRADE DOES NOT CONSTITUTE A MINEABLE OREBODY NOR SHOWS POTENTIAL FOR THE DEVELOPMENT OF SIZEABLE TUNGSTEN RESERVES ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT; 3 FIELD OBSERV

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-1981 Royse, Sue E. Nevada Bureau of Mines and Geology
Updater 01-JUN-1987 La Pointe, D.D. Nevada Bureau of Mines and Geology
Updater 01-SEP-1994 Li, Zhiping (Peters, S.) U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

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.