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Pumpkin Hollow

Prospect in Lyon county in Nevada, United States with commodities Copper, Gold, Iron, Silver
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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. Nearby scientific data
  9. Ore body information
  10. Economic information about the deposit and operations
  11. Mining district
  12. Mineral rights holdings
  13. Land status
  14. Ownership information
  15. Reserves and resources
  16. Workings at the site
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10174173
MRDS ID W016414
MAS/MILS ID 0320190181
Record type Site
Current site name Pumpkin Hollow
Alternate or previous names Ore Body Names:, East Deposit, Lyon Copper/Iron Deposits, Lyon Claims, Northwest Deposit, North Deposit, South Deposit, E-2 Deposit

Comments on the site names

  • OTHER NAME: LYON CLAIMS. OPERATOR: ANACONDA

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -119.05178, 38.94021 (WGS84)
Elevation 1428
Location accuracy 100(meters)

Site location context

Political divisions (FIPS codes)

Lyon(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Yerington NE(quadrangle 1:24,000 scale)

Smith Valley(quadrangle 1:100,000 scale)

Walker Lake(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Walker(hydrologic unit)

Walker(hydrologic accounting unit)

Central Lahontan(hydrologic subregion)

Great Basin(hydrologic region)

Geographic areas

Country State County
United States Nevada Lyon

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 012 N 026 E 03 SW Nevada

Commodities

Commodity Importance
Copper Secondary
Gold Secondary
Iron Primary
Silver Secondary

Materials information

Materials Type of material
Actinolite Unknown
Bornite Unknown
Calcite Unknown
Chalcopyrite Unknown
Chlorite Unknown
Diopside Unknown
Epidote Unknown
Garnet Unknown
Hedenbergite Unknown
Magnetite Unknown
Pyrite Unknown
Pyrrhotite Unknown
Quartz Unknown
Serpentine Unknown
Talc Unknown
Tremolite Unknown

Nearby scientific data

Ore Body (1) -119.05178, 38.94021
ListMap

Economic information

Ore body information

  • Thickness 114M
    Length 853M
    Width 610M
    Depth to top 107M
    Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 REPLACEMENT
    Shape of Orebody #1 TABULAR
    Type of Orebody #2 DISSEMINATED
    Primary mode of Origin CONT METASOMATIC
    Secondary mode of Origin HYDROTHERMAL
    Primary Ore Control CONTACT ZONE
    Secondary Ore Control LITHOLOGY
    Degree of Wallrock Alter. INTENSE
    Type of Wallrock Alter. #1 CARBONATE SILIC
    Type of Wallrock Alter. #2 SILICIFICATION
    Type of Wallrock Alter. #3 OTHER
    Minimum Depth to Top 76
    Date of Last Modification 850828
  • Thickness 91M
    Length 457M
    Width 122M
    Depth to top 91M
    Field Value
    MAS Matrix # 2
    MAS Column # 1
    Type of Orebody #1 REPLACEMENT
    Shape of Orebody #1 TABULAR
    Type of Orebody #2 DISSEMINATED
    Primary mode of Origin CONT METASOMATIC
    Secondary mode of Origin HYDROTHERMAL
    Primary Ore Control CONTACT ZONE
    Secondary Ore Control LITHOLOGY
    Degree of Wallrock Alter. INTENSE
    Type of Wallrock Alter. #1 CARBONATE SILIC
    Type of Wallrock Alter. #2 SILICIFICATION
    Type of Wallrock Alter. #3 OTHER
    Minimum Depth to Top 91
    Date of Last Modification 830421
  • Thickness 518M
    Length 914M
    Width 244M
    Depth to top 305M
    Field Value
    MAS Matrix # 3
    MAS Column # 1
    Type of Orebody #1 REPLACEMENT
    Shape of Orebody #1 TABULAR
    Type of Orebody #2 DISSEMINATED
    Primary mode of Origin CONT METASOMATIC
    Secondary mode of Origin HYDROTHERMAL
    Primary Ore Control CONTACT ZONE
    Secondary Ore Control LITHOLOGY
    Degree of Wallrock Alter. INTENSE
    Type of Wallrock Alter. #1 CARBONATE SILIC
    Type of Wallrock Alter. #2 SILICIFICATION
    Type of Wallrock Alter. #3 OTHER
    Minimum Depth to Top 152
    Date of Last Modification 830421
  • Thickness 152M
    Length 427M
    Width 152M
    Depth to top 122M
    Field Value
    MAS Matrix # 4
    MAS Column # 1
    Type of Orebody #1 REPLACEMENT
    Shape of Orebody #1 TABULAR
    Type of Orebody #2 DISSEMINATED
    Primary mode of Origin CONT METASOMATIC
    Secondary mode of Origin HYDROTHERMAL
    Primary Ore Control CONTACT ZONE
    Secondary Ore Control LITHOLOGY
    Degree of Wallrock Alter. INTENSE
    Type of Wallrock Alter. #1 CARBONATE SILIC
    Type of Wallrock Alter. #2 SILICIFICATION
    Type of Wallrock Alter. #3 OTHER
    Minimum Depth to Top 122
    Date of Last Modification 830421
  • Length 914M
    Width 183M
    Depth to top 427M
    Field Value
    MAS Matrix # 5
    MAS Column # 1
    Type of Orebody #1 REPLACEMENT
    Shape of Orebody #1 TABULAR
    Type of Orebody #2 DISSEMINATED
    Primary mode of Origin CONT METASOMATIC
    Secondary mode of Origin HYDROTHERMAL
    Primary Ore Control CONTACT ZONE
    Secondary Ore Control LITHOLOGY
    Degree of Wallrock Alter. INTENSE
    Type of Wallrock Alter. #1 CARBONATE SILIC
    Type of Wallrock Alter. #2 SILICIFICATION
    Type of Wallrock Alter. #3 OTHER
    Minimum Depth to Top 396
    Min. Thick. Unconsol. Mat. 914
    Date of Last Modification 830421
  • Area 500HA
    Field Value
    Total Surface Area (HA) 500
    Date of Last Modification 910418

Comments on the geologic information

  • GEOMETRY OF ORE ALSO CONTROLLED BY FAULTING. GENERAL STRIKE AND DIP IS NE: NW.

Economic information about the deposit and operations

Operation type Surface
Development status Prospect
Commodity type Metallic
Significant Yes
Discovery year 1960

Mining district

District name Unorganized District

Mineral rights holdings

Type of mineral rights Patented
Type of mineral rights Located Claim
Type of mineral rights Private Lease

Land status

Ownership category Mixed

Ownership information

  • Type Owner
    Owner Prince Consolidated Mining Co
    Interest 100
    Home office Nevada
    Year 1984
  • Type Unknown
    Owner Plexus Resources Co. (Lessee) Salt Lake City, Utah
    Home office Utah
    Year 1984

Comments on the production information

  • NO PAST PRODUCTION.

Reserves and resources

  • Type In-situ
    Estimate year 1969
    Total resources 250000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Iron FeO 40 wt-pct Iron Major 1969
    Copper Cu 0.2999 wt-pct Copper Minor 1969

Comments on the reserve resource information

  • GOLD AND SILVER ARE PRESENT, POSSIBLY RECOVERABLE. M1C1 = SOUTH DEPOSIT. M2C1 = SOUTHEAST DEPOSIT. M2C2 = SOUTHEAST DEPOSIT, HIGH COPPER MATERIAL. M3C1 = NORTH DEPOSIT. M4C1 = NORTHWEST DEPOSIT. M5C1 = EAST DEPOSIT. M5C2 = EAST DEPOSIT, 0.5% COPPER CUTOFF. M5C3 = EAST DEPOSIT, 0.4% COPPER CUTOFF. M5C4 = EAST DEPOSIT, 0.3% COPPER CUTOFF. M5C5 = EAST DEPOSIT, HIGH IRON M5C1R1 = 44,000,000 METRIC TONS = MEASURED RESERVE. 130,000,000 METRIC TONS = INDICATED RESERVE. M5C1R2 = 174,000,000 METRIC TONS = DEMONSTRATED RESOURCE. M5C1R2 = ASAAY: 33% FE, 0.14% CU.
  • PUMPKIN HOLLOW IS 6 DISCRETE ORE BODIES. THE PUBLISHED RESOURCE IS A NEWSPAPER ITEM FROM 1969. SUBSEQUENT WORK BY THE OWNER HAS INCREASED THE RESOURCE SIGNIFICANTLY.

Workings at the site

  • Type of workings Surface
    Area 280HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method PROPOSED
    Mining Method OPEN PIT
    Percent Waste Rock 75
    Avg. Overburden Thickness 107
    Primary Material Cover HARD ROCKS
    Hardness of Ore HARD ROCKS
    Avg. Bench Height (meters) 15
    Max. Pit Slope (degrees) 45
    Capacity 30000
    Capacity Units MT ORE/DAY
    Preprod. Stripping Vol. 2900
    Unit Production Cost 3.98
    Units of Production $/MT ORE
    Operating Days per Year 300
    Operating Shifts per Day 3
    Year of Information 1981

Reference information

Bibliographic references

  • Reserve-Resource

    GIN, T. T., 1981, LYON COPPER/IRON DEPOSITS, LYON COUNTY,

  • Reserve-Resource

    NEVADA; U.S. STEEL CORP., 12 PP.

  • Deposit

    SYMP. OF ASSOC. EXPL. GEOCHEM., RENO, NV, MAR. 25-28, 1984,

  • Deposit

    PP. FT2 27-35.

  • Deposit

    MOORE, J. G. GEOLOGY AND MINERAL DEPOSITS OF LYON, DOUGLAS,

  • Deposit

    AND ORMSBY COUNTIES, NEVADA. NV BUREAU OF MINES AND GEOL.

  • Deposit

    BULL. 75, 1969, 45 PP.

  • Deposit

    MOORE, L. ECONOMIC EVALUATION OF CALIFORNIA-NEVADA IRON

  • Deposit

    RESOURCES AND IRON ORE MARKETS. BUMINES IC 8511, 1971,

  • Deposit

    1971, 207 PP.

  • Deposit

    SMITH, M. R. THE PUMPKIN HOLLOW MAGNESIAN IRON-COPPER

  • Deposit

    SKARN, FIELD TRIP 10, SKARN DEPOSITS. EXPLORATION FOR ORE

  • Deposit

    FOR ORE DEPOSITS OF THE NORTH AMERICAN CORDILLERA FIELD

  • Deposit

    TRIP GUIDEBOOK, ED. BY J. L. JOHNSON. SYMP. OF ASSOC.

  • Deposit

    EXPL. GEOCHEM., RENO, NV, MAR. 25-28, 1984, P. 41-42.

  • Deposit

    STODDARD, C., AND J. A. CARPENTER. MINERAL RESOURCES OF

  • Deposit

    STOREY AND LYON COUNTIES, NEVADA. NV BUREAU OF MINES AND GEOL.

  • Deposit

    BULL. 49, 1950, P. 89.

  • Deposit

    WALL STREET JOURNAL (NEW YORK). U.S. STEEL CONFIRMS IRON

  • Deposit

    AND COPPER FINDS IN NEVADA, SEES STEEL PRICE RISE IN 1970.

  • Deposit

    DEC. 19, 1969, P. 6.

General comments

Subject category Comment text
Deposit OWNER REFERS TO PROPERTY AS THE LYON DEPOSITS OR THE LYON COPPER/IRON DEPOSITS. THE PLANT CAPACITY WAS 9000000 MTPY. THE PROPERTY CONSISTS OF SIX MINERALIZED AREAS SOUTH DEPOSIT SOUTHEAST DEPOSIT NORTH DEPOSIT NORTHWEST DEPOSIT EAST DEPOSIT EAST EXTENSION MINERALIZED TREND. THE OWNER IS NOT, AT PRESENT (1981), PLANNING A MINING OPERATION. DRILLING IS ONGOING (1981). SOUTH AND SOUTHEAST DEPOSITS CAN BE MINED OPEN PIT OTHER DEPOSITS WOULD REQUIRE UNDERGROUND METHODS.

Reporter information

Type Date Name Affiliation Comment
Reporter 09-MAR-1995 Spear, James M. U.S. Bureau of Mines

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.