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NBMG Sample Location 1741

Past Producer in Lincoln county in Nevada, United States with commodities Copper, Lead, Silver, Gold, Molybdenum
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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. Ore body information
  13. Controls for ore emplacement
  14. Economic information about the deposit and operations
  15. Mining district
  16. Land status
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10046500
MRDS ID M241669
Record type Site
Current site name NBMG Sample Location 1741
Related records 10246670

Geographic coordinates

Geographic coordinates: -114.79251, 37.51719 (WGS84)
Elevation 1737

Site location context

Political divisions (FIPS codes)

Lincoln(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Pahroc Spring SE(quadrangle 1:24,000 scale)

Caliente(quadrangle 1:100,000 scale)

Caliente(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Dry Lake Valley(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
Mount Diablo 005S 064E 14 Nevada

Comments on the location information

  • INFO FROM LAND.ST :1972

Commodities

Commodity Importance
Copper Primary
Lead Primary
Silver Primary
Gold Primary
Molybdenum Tertiary

Materials information

Materials Type of material
Chalcopyrite Ore
Chrysocolla Ore
Covellite Ore
Galena Ore
Malachite Ore
Tetrahedrite Ore
Pyrite Gangue
Quartz Gangue

Alteration

  • (Local) Wallrocks Bleached White

Analytical data

Result SAMPLE 1741 CONTAINS 2% FE, 50 PPM MN, 100 PPM AG, 200 PPM BA, 500 PPM BI, 1500 PPM CU, 700 PPM MO, 2000 PPM PB, 700 PPM SB, 200 PPM SN, 300 PPM ZN.

Mineral occurrence model information

Model code 150
USGS model code 25c
Deposit model name Epithermal vein, Comstock
Mark3 model number 16

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Quartzite
    Stratigraphic age (youngest) Late Cambrian

Nearby scientific data

(1) -114.79251, 37.51719
ListMap

Economic information

Ore body information

  • Strike N20W
    Dip 65SW
    Thickness 1.52M
    Length 15.24M

Controls for ore emplacement

  • Shear Zone, Fracturing Along Well-Defined Joint Set

Comments on the geologic information

  • QUARTZITE STRIKES N55W, DIP 25 NE. BEDDING AND FRACTURE SURFACES ARE COATED BY FE AND MN OXIDES AND QUARTZ CRYSTALS, FRACTURES GENERALLY OCCUR AT A HIGH ANGLE TO BEDDING. SOME BEDDING SURFACES SHOW SLICKENSIDES. SHALE OUTCROPS TO SOUTH

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Delamar District

Land status

Ownership category BLM Administrative Area

Comments on the workings information

  • INCLINED SHAFT WITH HEADFRAME AND STOPE ALONG SHEAR (FRACTURE) ZONE

Comments on development

  • NO ACTIVITY AT TIME OF EXAMINATION IN SEPT., 1983, BUT SOME FAIRLY RECENT SURFACE EXPLORATION (ASSESSMENT WORK?) ON SLOPE NW OF SHAFT NEAR PROSPECTS

Reference information

Bibliographic references

  • Deposit

    BENTZ, J. AND SMITH, P., 1983, FIELD EXAMINATION REPORT OF SEPT. 22, 1983.

  • Deposit

    TSCHANZ, C.M. AND PAMPEYAN, E.H., 1970, NBMG BULL 73.

General comments

Subject category Comment text
Deposit MINERALIZED SHEAR ZONE FOLLOWED BY STOPE FOR 50 FT. SHEAR SURFACE IS WELL-DEFINED AND COATED BY ABUNDANT FE AND MN OXIDES. FRACTURE SETS ARE ALIGNED PARALLEL TO MAIN SHEAR, AND ALL PARALLEL A WELL-DEVELOPED JOINT SET IN THE HOST, INDICATING THAT FRACTURING PROBABLY PROVIDED A PRE-MINERAL ZONE OF WEAKNESS. DUMPROCK CONSISTS OF ALTERED AND MINERALIZED QUARTZITE, AND LESS ABUNDANT MASSIVE TO CRYSTALLINE WHITE QUARTZ VEIN MATERIAL WITH LARGE VUGS FILLED WITH PRISMATIC QUARTZ. CLOTS AND IRREGULAR LENSES OF PYRITE, CHALCOPYRITE, COVELLITE AND POSSIBLY GALENA AND TETRAHEDRITE OCCUR IN THE QUARTZITE WHICH ALSO SHOWS BOXWORKS AND FE AND MN STAINS. SULFIDES ARE FRESH INTERNALLY, BUT OXIDIZED NEAR THE WEATHERED SURFACE OF THE ROCKS. MALACHITE AND CHRYSOCOLLA ARE ABUNDANT ON SOME SAMPLES. YELLOW AND GREEN OXIDES COAT ROCKS ALSO.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-1984 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.

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.