Lyon Deposit

Site Name

Primary: Lyon Deposit
Secondary: Pumpkin Hollow A Portion Only

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Commodity

Primary: Copper
Secondary: Gold
Secondary: Silver

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Location

State: Nevada
County: Lyon
District: Yerington

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Land Status

Land ownership: BLM Administrative Area
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.

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Holdings

Type: Located Claim

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Workings

Type: Underground

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Ownership

Owner Name: Plexus Resources Corp.
Percent: 100.0
Home Office: Utah
Info Year: 1985

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Production

Not available

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Deposit

Record Type: Site
Operation Category: Occurrence
Operation Type: Surface
Mining Method: Open Stope - Room and Pillar
Milling Method: Flotation
Discovery Year: 1960
Years of Production:
Organization:
Significant: N

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Physiography

General Physiographic Area: Intermontane Plateaus
Physiographic Province: Basin And Range Province
Physiographic Section: Great Basin

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Mineral Deposit Model

Not available

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Orebody

Not available

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Structure

Not available

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Alterations

Not available

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Rocks

Not available

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Analytical Data

Not available

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Materials

Unknown: Calcite
Unknown: Chalcopyrite
Unknown: Chlorite
Unknown: Epidote
Unknown: Magnetite
Unknown: Quartz
Unknown: Serpentine
Unknown: Talc

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Comments

Comment (Deposit): NOT INCLUDED IN THE 1978 SUPPLY ANALYSIS. RESOURCES: 7.5 MILLION @ 3.1% CU, 8.6 GM AG, & 0.5 GM AU 26.3 MILLION @ 1.1% CU (SURROUNDING ABOVE) PLEXUS RESOURCES CORP., 1984 AR; AMERICAN MINES HANDBOOK, 1989, P145.

Comment (Production): NO PREVIOUS PRODUCTION

Comment (Reserve-Resource): NO INFERRED RESOURCE WAS CONSIDERED BY THE COMPANY. CALCULATIONS FOR THIS MATERIAL ARE NOT AVAILABLE. M1C1=M1C3+M1C4

Comment (Economic Factors): ORE IS MILLED ON SITE, THEN TRUCKED 40 KM TO THE SOUTHERN PACIFIC RALHEAD AT WABUSKA NEVADA, THEN RAIL HAULED TO HAYDEN, AZ. FOR SMELTING.

Comment (Economic Factors): UNDERGROUND DEVELOPMENT RECORDS ARE CUMMULATIVE; RECORD 1 DENOTES INITIAL MINING OF E-2 ZONE; RECORD 2 DENOTES FULL CAPACITY MINING OF THE E-2 ZONE; RECORD 3 DENOTES FULL PRODUCTION AT THE EAST ZONE TO END OF THE OPERATION.

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References

Reference (Deposit): DEPOSIT, WESTERN NEVADA. PH.D. THESIS, STANFORD UNIV. CA,

Reference (Deposit): 1983, 389 PP.

Reference (Deposit): GALE, G.D. METALLURGICAL ENGINEER, WESTERN FIELD

Reference (Deposit): OPERATIONS CENTER. MINERALS AVAILABILITY SYSTEM REP. ON THE

Reference (Deposit): MARGARET PROJECT, 1980.

Reference (Deposit): GEOLOGICAL SOCIETY OF AMERICA. 36TH ANNUAL MEETING-

Reference (Deposit): ROCKY MOUNTAIN SECTION, 79TH ANNUAL MEETING-CORDILLERAN

Reference (Deposit): SECTION. GEOL. SOC. AMERICA, V. 15, NO. 5, 1983, P. 277.

Reference (Deposit): GEOLOGICAL SOCIETY OF NEVADA. NOVEMBER 1982 MEETING,

Reference (Deposit): GEOLOGY OF THE PUMPKIN HOLLOW COPPER MAGNETITE SKARN

Reference (Deposit): DEPOSITS, NOV. 1982.

Reference (Deposit): NEVADA BUREAU OF MINES. GEOLOGY AND MINERAL DEPOSITS

Reference (Deposit): OF LYON, DOUGLAS, AND ORMSBY COUNTIES, NEVADA. UNIV. NV.

Reference (Deposit): BUREAU OF MINES BULL. 75, PP. 6-7, 26-28.

Reference (Deposit): PLEXUS RESOURCES CORP. ANNUAL REPORTS, 1984-85.

Reference (Deposit): PROFFETT, J.M. JR., AND J.H. DILLES. GEOLOGIC MAP OF

Reference (Deposit): THE YERINGTON DISTRICT, NEVADA. NV BUREAU OF MINES AND GEOL

Reference (Deposit): MAP NO. 77, 1984.

Reference (Deposit): SECURITY AND EXCHANGE COMMISSION. FORM 2-14, 1976,

Reference (Deposit): PP. 60,67.

Reference (Deposit): SMITH, M.R. LECTURE FROM SKARN DEPOSIT FIELD TRIP.

Reference (Deposit): SYMPOSIUM OF THE ASSOCIATION OF EXPLORATION GEOCHEMISTS,

Reference (Deposit): EXPLORATION FOR ORE DEPOSITS OF THE NORTH AMERICAN

Reference (Deposit): CORDILLERA. MAR. 25-28, 1984.

Reference (Deposit): U.S. DEPARTMENT OF COMMERCE NATIONAL - OCEANIC AND

Reference (Deposit): ATMOSPHERIC ADMINISTRATION. MONTHLY NORMALS OF TEMPERATURE,

Reference (Deposit): PRECIPITATION, AND HEATING AND COOLING DEGREE DAYS, 1941-70.

Reference (Deposit): 1973, 10 PP.

Reference (Deposit): WEST, C. COMPANY OFFICIAL, PLEXUS RESOURCES CORP.

Reference (Deposit): PERSONAL COMMUNICATION, 1985.

Reference (Deposit): WORLD MINING. YERINGTON DISTRICT WILL BE A MAJOR

Reference (Deposit): FUTURE PORPHYRY COPPER PRODUCER. MAR. 1976, P. 82.

Reference (Deposit): WORLD MINING. ANACONDA-ATLANTIC RICHFIELD MUST DIVEST

Reference (Deposit): DILLES, J. H. THE PETROLOGY AND GEOCHEMISTRY OF THE

Reference (Deposit): YERINGTON BATHOLITH AND THE ANN MASON PORPHYRY COPPER

Reference (Deposit): CU RESERVES. MAY 1979, P. 65.

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Nevada Gold

Nevada has a total of 368 distinct gold districts. Of the of those, just 36 are major producers with production and/or reserves of over 1,000,000 ounces, 49 have production and/or reserves of over 100,000 ounces, with the rest having less than 100,000 ounces. Read more: Gold Districts of Nevada.