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Culverwell Prospect

Past Producer in Lincoln county in Nevada, United States with commodities Gold, Silver, Copper, 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. Alteration
  9. Host and associated rocks
  10. Nearby scientific data
  11. Geologic structures
  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 10037383
MRDS ID M032085
Record type Site
Current site name Culverwell Prospect
Alternate or previous names Johnson, Culverwell-Johnson Property, T. C. Johnston Claims, NBMG Sample Site 1706.
Related records 10222656

Geographic coordinates

Geographic coordinates: -114.47527, 37.41775 (WGS84)

Site location context

Political divisions (FIPS codes)

Lincoln(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Ella Mountain(quadrangle 1:24,000 scale)

Clover Mountains(quadrangle 1:100,000 scale)

Caliente(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Meadow Valley Wash(hydrologic unit)

Lower Colorado-Lake Mead(hydrologic accounting unit)

Lower Colorado-Lake Mead(hydrologic subregion)

Lower Colorado(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
06S 67E 16 Nevada

Comments on the location information

  • AREA UNSURVEYED ; INFO FROM LAND.ST :(1972)

Commodities

Commodity Importance
Gold Primary
Silver Primary
Copper Tertiary
Tungsten Critical Tertiary

Comments on the commodity information

  • ORE MINERALS NOT GIVEN IN THE LITERATURE

Materials information

Materials Type of material
Chalcopyrite Ore
Malachite Ore
Pyrite Gangue
Quartz Gangue

Alteration

  • (Local) Silication, Silicification, Recrystallization.

Analytical data

Result GRAB SAMPLES ASSAY: 2 OZ. AU, 14-25 OZ AG PER TON. MAXIMUM ASSAY WAS 3 OZ AU/TON TWO CHANNEL SAMPLES CONTAIN 3-5 OZ AG/TON, .46-.25 OZ AU/TON

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Stratigraphic age (youngest) Late Cambrian
    Stratigraphic age (youngest) Late Cambrian
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Quartzite
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Mudstone
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Prospect Mountain Quartzite
    Rock description Prospect Mountain Quartzite

Nearby scientific data

(1) -114.47527, 37.41775
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Steep Fault

Ore body information

  • Strike N-S
    Dip FLAT

Controls for ore emplacement

  • Fractures, Fault Zone, Igneous Contact

Comments on the geologic information

  • FLAT QUARTZ VEIN, PROBABLY AN EXTENSION OF THE PENNSYLVANIAN VEIN

Economic information about the deposit and operations

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

Mining district

District name Pennsylvania District District

Land status

Ownership category BLM Administrative Area

Comments on the production information

  • 16 CARLOADS OF AU ORE

Comments on the workings information

  • COULD BE MINED BY OPEN PIT

Comments on development

  • NO ACTIVITY AT TIME OF EXAMINATION IN 1983. EXPLORED BY KENNECOTT AND HOMESTAKE IN 1960'S, WESTERN VENTURES AND CORDILLERAN EXPLORATION (1969-1971).

Reference information

Bibliographic references

  • Deposit

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

  • Deposit

    BENTZ, J. AND SMITH, P., 1983, FIELD EXAMINATION REPORT, SEPT 13, 1983.

  • Deposit

    NBMG DISTRICT FILES, REPORT ON THE JOHNSTON PROPERTY

General comments

Subject category Comment text
Deposit LIMESTONE IS ALTERED, EITHER SILICATED TO LIGHT GREEN OR DENSE DARK GREEN-BROWN TACTITE, OR BLEACHED AND RECRYSTALLIZED TO A WHITE CRYSTALLINE MARBLE. THE ROCKS ARE CUT BY IRREGULAR IRON-STAINED VEINS. PROSPECT APPEARS TO FOLLOW A N-S FAULT OR QUARTZ VEIN SYSTEM WHICH IS THOUGHT TO BE A SOUTHERN EXTENSION OF THE PENNSYLVANIA VEIN. SILICATION INDICATES THAT ROCKS ARE LOCALLY INTRUDED BY DIKES OR OTHER INTRUSIVE BODIES AS SHOWN ON USGS MAP AND COUNTY REPORT. HOWEVER, NO INTRUSIVE ROCKS WERE OBSERVED IN THE IMMEDIATE AREA. SAMPLE 1706 CONSISTS OF QUARTZ VEIN AND QUARTZ-CEMENTED SEDIMENTARY BRECCIA WITH CLOTS AND CRYSTALS OF OXIDIZED PYRITE, CHALCOPYRITE AND SURFACE COATINGS OF CU-FE-MN OXIDES. VEIN MATERIAL HAS SMALL VUGS LINED WITH MN-COATED QUARTZ CRYSTALS AND RADIATING MALACHITE. THIN OPEN-CENTERED VEINLETS CUT MORE MASSIVE SUGARY VEIN MATERIAL. SAMPLED VEIN IS DARK GREY (ESPECIALLY IN AREAS CONTAINING CRYSTALS OF UNOXIDIZED PYRITE) INDICATING A HIGH PERCENTAGE OF DISPERSED SULFIDES
Deposit (AG MINERALS ?)

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-1980 Harner, Joy L. (Roberts, Ralph J.) U.S. Geological Survey
Updater 01-DEC-1984 La Pointe, D.D. (Tingley, J.V.) 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.