The Lago Deposit is a molybdenum and copper mine located in Lyon county, Nevada at an elevation of 4,360 feet.
About the MRDS Data:
All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.
Mine Info
Elevation: 4,360 Feet (1,329 Meters)
Commodity: Molybdenum, Copper
Lat, Long: 39.015, -119.18361
Map: View on Google Maps
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Lago Deposit MRDS details
Site Name
Primary: Lago Deposit
Secondary: Bear Copper Deposit
Secondary: Bear prospect
Secondary: Lagomarsino Ranch prospect
Commodity
Primary: Molybdenum
Primary: Copper
Secondary: Silver
Secondary: Gold
Location
State: Nevada
County: Lyon
District: Mason Valley
Land Status
Land ownership: Private
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.
Holdings
Not available
Workings
Not available
Ownership
Owner Name: Anaconda Minerals Company
Home Office: Nevada
Info Year: 1984
Production
Not available
Deposit
Record Type: Deposit
Operation Category: Prospect
Deposit Type: Porphyry copper
Operation Type: Underground
Discovery Year: 1961
Years of Production:
Organization:
Significant: Y
Deposit Size: S
Physiography
General Physiographic Area: Intermontane Plateaus
Physiographic Province: Basin And Range Province
Physiographic Section: Great Basin
Mineral Deposit Model
Model Name: Porphyry Cu
Model Name: Porphyry Cu-Mo
Orebody
Not available
Structure
Type: L
Description: faults
Alterations
Not available
Rocks
Name: Porphyry
Role: Associated
Description: dikes
Age Type: Associated Rock
Age Young: Tertiary
Name: Granodiorite
Role: Host
Age Type: Host Rock
Age Young: Jurassic
Name: Porphyry
Role: Host
Description: quartz monzonite
Age Type: Host Rock
Age Young: Jurassic
Name: Quartz Monzonite
Role: Host
Description: porphyry
Age Type: Host Rock
Age Young: Jurassic
Analytical Data
Not available
Materials
Ore: Chalcopyrite
Ore: Bornite
Ore: Molybdenite
Gangue: Pyrite
Comments
Comment (Development): In 1965, a Newmont-Utah Construction jpont venture drilled shallow holes in the Lagomarsino Ranch lands area northeast of the main Yerington Deposit on the east side of McLeod Hill, but found insufficient copper mineralization to continue work. Anaconda subsequently acquired the property and drilled 10 deeper holes with similar results. Phelps Dodge drilled 12 holes on the property between 1969 and 1973 and discovered the copper-moly deposit. Development of the deposit would have necessitated relocation of the county airport, which was voted down by the Lyon COunty Board of Commissioners, effectively halting development of this rich orebody.
Comment (Commodity): Ore Materials: chalcopyrite, bornite, molybdenite
Comment (Commodity): Gangue Materials: pyrite
Comment (Deposit): Replacement and disseminated mineralization is hosted mainly by granodiorite and quartz monzonite deposit but is associated with faulting at an igneous contact zone.
Comment (Economic Factors): The deposit contains an estimated 484,000,000 tons of material grading 0.44% copper and 0.01 % Mo, based on a 1979 resource estimate.
Comment (Geology): The deposit does not outcrop and is deeply buried.
Comment (Identification): All pertinent material from earlier MRDS record N000424 has been incorporated into the current record, as well as additional new information.
Comment (Location): The Bear deposit is concealed beneath Cenozoic cover just NW of Mcleod Hill.
Comment (Deposit): Associated Minerals: actinolite, biotite, chalcopyrite, magnetite, molybdenite, pyrite
Comment (Deposit): Associated Rock: quartz monzonite;granite, limestone, rhyolite, sandstone, skarn, volcaniclastic rocks ;andesite, quartz monzodiorite
Comment (Deposit): Deposit Does Not Outcrop And Is Deeply Buried. General Size Of Ore Body: Large
References
Reference (Deposit): Lowe, Raney, and Norberg, Principal Deposits of Strategic and Critical Minerals in Nevada; USBM IC-9035.
Reference (Deposit): Proffett, J.M., 1967, Progress Report on the Bear-Lagomarsino area, Yerington District, Lyon County, Nevada: Anaconda Company Report, 31p..
Reference (Deposit): Wilson, G.E., 1978, Data exchange with Phelps Dodge on the Bear-Lagomarsino area: Anaconda Company Report, 28p.
Reference (Deposit): John, D.A., and Sherlock, M.G., 1991, Map Showing Mines and Prospects in the Reno 1 by 2 Quadrangle, Nevada and California, USGS MF-2154, Site #P3
Reference (Deposit): Long, K.R., DeYoung, J.H., Jr., and Ludington, S.D., 1998, Database of significant deposits of gold, silver, copper, lead, and zinc in the United States; Part A, Database description and analysis; part B, Digital database: U.S. Geological Survey Open-File Report 98-206, 33 p., one 3.5 inch diskette.
Reference (Deposit): Jurassic Magmatism and Metal Deposits in Western Nevada, 2002, Spring Field Trip Guidebook, Geological Society of Nevada Special Publication No. 35.
Reference (Deposit): Stoddard, C., And J. A. Carpenter. Mineral Resources Of Storey And Lyon Counties, Nevada. Nv Bureau Of Mines And Geol. Bulletin 49, 1950, P. 89.
Reference (Deposit): World Mining (San Francisco) What'S Going On In World Mining - United States: Nevada; Yerington District Will Be A Major Future Porphyry Copper Producer. V. 29, No. 3, 1976, P. 82.
Reference (Reserve-Resource): World Mining (San Francisco) Anaconda - Atlantic Richfield Must Divest Cu Reserves. V. 32. No. 5, 1979, P. 65.
Reference (Deposit): Dilles, J.H. and Wright, J.E., 1988, The chronology of Early Mesozoic arc magmatism in the Yerington District, Nevada, and its regional implications; Geological Society of America Bulletin, v. 100, p. 644-652.
Reference (Deposit): Einaudi, M.T., 1982, Description of skarns associated with porphyry copper plutons; in Titley, S. R., ed., Advances in Geology of the Porphyry Copper Deposits, Southwest North America, University of Arizona Press, Tucson, Arizona, p. 139-183.
Reference (Deposit): Albino, G.V., 1995, Porphyry copper deposits of the Great Basin?Nevada, Utah, and adjacent California, in Pierce, F.W., and Bolm, J.G., eds, Porphyry copper deposits of the American Cordillera: Tucson, Arizona Geological Society Digest 20, p. 267?296.
Reference (Deposit): Dilles, J.H., and Proffett, J.M., 1995, Metallogenesis of the Yerington batholith, Nevada, in Pierce, F.W., and Bolm, J.G., eds., Porphyry copper deposits of the American Cordillera: Tucson, Arizona Geological Society Digest 20, p. 306?315.
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.
