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Open Pit Pennsylvania Mine

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

Geologic information

Identification information

Deposit ID 10046480
MRDS ID M241647
Record type Site
Current site name Open Pit Pennsylvania Mine
Alternate or previous names Tom Johnston Property In Part, Part of Alta Claims, Jumbo Claim Area?
Related records 10310471

Geographic coordinates

Geographic coordinates: -114.47555, 37.41358 (WGS84)
Elevation 1753

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 006S 067E Nevada

Comments on the location information

  • UNSURVEYED ; INFO FROM LAND.ST :1972

Commodities

Commodity Importance
Gold Primary
Silver Primary
Copper Primary
Barium-Barite Critical Tertiary

Comments on the commodity information

  • BA IS UNCERTAIN.

Materials information

Materials Type of material
Brochantite Ore
Chalcopyrite Ore
Gold Ore
Malachite Ore
Calcite Gangue
Clay Gangue
Pyrite Gangue
Quartz Gangue

Alteration

  • (Local) Argillization, Silicification,

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock
    Rock unit name Prospect Mountain Quartzite;Pioche Shale
    Rock description Prospect Mountain Quartzite;Pioche Shale
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite

Nearby scientific data

(1) -114.47555, 37.41358
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Caliente Caldron Complex
Type of structure Local
Structure description Ne-And Nw- Striking Faults.

Controls for ore emplacement

  • Shear Zone

Economic information about the deposit and operations

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

Mining district

District name Pennsylvania District

Land status

Ownership category BLM Administrative Area

Ownership information

  • Type Owner
    Owner Westward Energy And Resources, Inc.
    First year 1983

Reserves and resources

  • Type In-situ
    Estimate year 1969
    Total resources 453000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 2.823 g/mt Gold Major 1969
    Silver Ag 39.529 g/mt Silver Major 1969

Comments on the reserve resource information

  • EASILY MINEABLE (OPEN PIT) ORE FROM THE JUMBO SHOOT

Comments on the workings information

  • PROPERTY CONTAINS SMALL SHALLOW OPEN-PIT MINE AND STOCK PILES OF REWORKED DUMP MATERIAL FROM OTHER MINESITES IN DISTRICT. FAIRLY MODERN CRUSHING AND SORTING EQUIPMENT PRESENT. OLD CHARCOAL KILNS, (SMELTERS), SEVERAL LEACH? PONDS IN DRAINAGE AND CANISTERS OF SODIUM LSULFISDE AT SITE. SHALLOW SURFACE SCRAPING

Comments on development

  • SEVERAL CORE BOXES INDICATE PROPERTY WAS DRILLED. OPEN PIT OPERATION APPEARS TO BE 2.5 YEARS OLD. EQUIPMENT IS MODERN, BUT NO SIGN OF CURRENT ACTIVITY. ORANGE FAGGING ON OUTCROPS AT WEST EDGE OF PIT INDICATES RECENT SAMPLING OF PROPERTY

Reference information

Bibliographic references

  • Deposit

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

  • Deposit

    TSCHANZ AND PAMPEYAN, 1970, NBMG BULL 73, P. 170-172, PL. I., II.

  • Deposit

    NBMG DISTRICT FILES, REPORT ON TOM JOHNSON PROPERTY

  • Deposit

    GRAPEVINE SPRING G-E-M RESOURCES AREA TECHNICAL REPORT, 1983. FOR BLM

  • Reserve-Resource

    NBMG DISTRICT FILES, UNPUB. REPORT ON TOM JOHNSTON PROPERTY

General comments

Subject category Comment text
Deposit AREA OF SHEETED QUARTZ VEINS AND QUARTZ-CEMENTED BRECCIA WHICH WAS EMPLACED ALONG ASHEAR ZONE. INTERVENING WALLROCK FRAGMENTS AND LENSES CONSIST OF ALTERED ANDESITE, MAPPED AS MIOCENE ASH-FLOW TUFF. ROCKS ARE HIGHLY ALTERED; FELDSPARS ALTERED TO CLAY. THERE ARE SOME FRAGMENTS OF CONGLOMERATE OR FINE-GRAINED CLASTIC ROCK ALSO. FRAGMENTS OF QUARTZ VEIN, RECEMENTED BY WHITE QUARTZ WERE ALSO OBSERVED, INDICATING MULTIPLE VEINING AND BRECCIATION. THE QUARTZ IN OUTCROP IS LIGHT GREEN TO TAN TO GREY IN COLOR, SUGARY TO MASSIVE IN TEXTURE AND CHARACTERISTICALLY VUGGY WITH SOME GOSSANY PORTIONS. THE VUGS ARE FILLED WITH EUHEDRAL PRISMATIC QUARTZ WHICH IS HIGHLY IRON-STAINED. FISSURE-TYPE BANDING IS COMMON AS IS QUARTZ AFTER CALCITE TEXTURES. SOME COARSE WHITE CALCITE VEIN IS ALSO PRESENT. THE REMNANT MOST ROCK IS THOROUGHLY KAOLINIZED AND SILICIFIED. MOST OF THE VEINS ARE SUBPARALLEL WITH A GENERAL N-NW STRIKE AND SHALLOW E-NE DIP. THE OUTCROP IS SHEARED (FRACTURED) BOTH PARALLEL TO AND AT A
Deposit HIGH ANGLE TO THE SHEETED VEIN SYSTEM. THE DOMINANT NW SHEARING AND VEINING REFLECTS A MAJOR NE-STRIKING 30E-DIPPING FAULT WHICH BOUNDS THE INFERRED SOUTHERN LIMIT OF THE CALIENTE CALDRON COMPLEX. SO

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.