1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Culverwell Adit

Occurrence in Lincoln county in Nevada, United States with commodities Copper, Silver, Tungsten, Gold, Iron
Map
XML
JSON
KML
B
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. Links to other databases
  19. Bibliographic references
  20. General comments
  21. Reporter information

Geologic information

Identification information

Deposit ID 10046479
MRDS ID M241646
Record type Site
Current site name Culverwell Adit
Alternate or previous names Upper and Lower Independence Adits, NBMG Sample Location 1707, Part of Tom Johnston Property
Related records 10271371

Geographic coordinates

Geographic coordinates: -114.47027, 37.40747 (WGS84)
Elevation 1783
Relative position UNSURVEYED AREA

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
Mount Diablo 0065 067E Nevada

Comments on the location information

  • INFO FROM LAND.ST :1972

Commodities

Commodity Importance
Copper Primary
Silver Primary
Tungsten Critical Primary
Gold Primary
Iron Secondary

Materials information

Materials Type of material
Chalcopyrite Ore
Magnetite Ore
Calcite Gangue
Chlorite Gangue
Epidote Gangue
Pyrite Gangue

Alteration

  • (Local) Silication, Marbelization, Chloritization

Analytical data

Result SAMPLES TAKEN IN 1943 BY DMEA RAN 0.03-0.46 OZ/+AU, 1.0-5.19 OZ/+AG, TR-0.081% CU.

Mineral occurrence model information

Model code 59
USGS model code 18b
Deposit model name Skarn Cu
Mark3 model number 8

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Stratigraphic age (youngest) Late Cambrian
    Stratigraphic age (youngest) Pliocene
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic)
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone

Nearby scientific data

(1) -114.47027, 37.40747
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Fractures, Faults

Ore body information

  • General form LENSES, VEINS, PODS
    Strike N60W
    Dip 70NE

Controls for ore emplacement

  • Igneous Contact

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Pennsylvania District

Land status

Ownership category BLM Administrative Area

Comments on the workings information

  • S30E-TRENDING ADIT RECENTLY DEMOLISHED BY TRENCHING AND SCRAPING IN DRAINAGE AREA. REMAINS OF TRACK NEAR PORTAL. PROSPECT ABOVE ADIT IS A CAVED SHAFT INCLINED ABOUT 40 NE.

Comments on development

  • NO ACTIVITY AT TIME OF EXAMINATION IN 1983, BUT TRENCHING WAS PROBABLY DONE IN PAST 5 YEARS OR SO.

Reference information

Bibliographic references

  • Deposit

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

  • Deposit

    NBMG DISTRICT FILES, REPORT ON TO M JOHNSTON PROPERTY

General comments

Subject category Comment text
Deposit THE SHAFT IS INCLINED ALONG AN IRON-STAINED, SILICIFIED, GOSSAN REPLACEMENT ZONE. MINERALIZED DUMP ROCK IS RED-BLACK, VERY DENSE AND COMPOSED ALMOST WHOLLY OF MAGNETITE. MAGNETITE ALSO OCCURS IN CALCITE-VEINED TACTITE AND AS REPLACEMENT PODS IN THE LIMESTONE. LIMESTONE WASTE ROCK SHOWS VARIOUS TYPES OF ALTERATION INCLUDING SILICATION, MARBELIZATION, AND REPLACEMENT OR STAINING BY IRON-OXIDES (GOSSAN). SAMPLE 1707 IS OF REPLACED LIMESTONE COLLECTED FROM BULLDOZER TRENCH IN DRAINAGE BELOW ADIT. THE ROCK IS BANDED, VERY DENSE, AND CONTAINS LENSES AND VEINS OF CALCITE AND OXIDIZED PODS AND CRYSTALS OF MAGNETITE, COPPER OXIDES, PYRITE, AND CHALCOPYRITE. THE SAMPLE WAS LAMPED AND ONLY TWO VERY FINE SPECKS OF SCHEELITE WERE OBSERVED. ROCKS EXPOSED IN BULLDOZED TRENCH CONSISTS OF A SEQUENCE OF WHITE MEDIUM-COARSELY CRYSTALLINE MARBLE, EPIDOTIZED MONZONITE-DIORITE INTRUSIVE ROCK AND BANDED, LIGHT AND DARK GREEN TACTITE. CONTACT OF INTRUSIVE WITH LIMESTONE IS NOT WELL-EXPOSED, BUT ORIENTATION
Deposit IS PROBABLY NE-SW. WEATHERED, CHLORITICALLY ALTERED INTRUSIVE OUTCROPS AT BOTTOM OF TRENCH JUST NW OF ADIT. THE ROCK HAS FE-STAINED FRACTURES AND CARRIES A SMALL AMOUNT OF OXIDIZED PYRITE. SILICATED

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-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.

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.