Horseshoe Mine

Site Name

Primary: Horseshoe Mine
Secondary: Horseshoe/Galaxy Mine
Secondary: part of Mooney Basin Mine Area

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Commodity

Primary: Gold

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Location

State: Nevada
County: White Pine
District: Bald Mountain District

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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.
Administrative Organization: Ely BLM district

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Holdings

Not available

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Workings

Not available

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Ownership

Owner Name: Barrick Gold Corp.
Info Year: 2006

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Production

Not available

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Deposit

Record Type: Site
Operation Category: Producer
Deposit Type: sediment-hosted gold
Operation Type: Surface
Year First Production: 1991
Year Last Production: 1992
Years of Production:
Organization:
Significant: Y
Deposit Size: S

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Physiography

Not available

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Mineral Deposit Model

Model Name: Sediment-hosted Au

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Orebody

Not available

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Structure

Type: R
Description: The Bald Mountain district is located in an area of thinned crust along the eastern side of the Late Proterozoic rift that split the North American craton. It is also in the west-central portion of the Late Devonian-Early Mississippian Antler foreland basin, and near the eastern edge of deformation related to the late Paleozoic Humboldt orogeny To the west of the Bald Mountain district, geologic interpretations are dominated by recognition of Paleozoic deformation, whereas to the east, interpretations emphasize Mesozoic contraction and plutonism and Tertiary extension.

Type: L
Description: At Galaxy, the dominant structure controls are

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Alterations

Not available

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Rocks

Name: Sedimentary Rock
Role: Host
Age Type: Host Rock
Age Young: Early Mississippian
Age Old: Late Devonian

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Analytical Data

Not available

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Materials

Ore: Gold

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Comments

Comment (Commodity): Ore Materials: gold

Comment (Deposit): Horseshoe has dominant trends of N4050W that are about parallel to the Bida trend.

Comment (Development): Development in the northeastern part of the district began in 1987. The ARM Joint Venture (Amselco with, at dif- ferent times, Occidental Petroleum, Nerco, Kennecott) began relinquishing claim groups north of Alligtor Ridge Mine that were originally staked as part of an agreement with Lyle Campbell. Campbell retained and maintained the claim groups and, in November 1987, leased the Casino-Winrock area of claims to the USMX-Pegasus Joint Venture who began mining the deposit in 1991. Mining commenced in July, 1991 and was completed in 1992. Haul distance was 1.3 miles and strip ratio was 0.93:1. In 2006, Barrick Gold Corp. acquired the Horseshoe Mine property through its acquisition of Placer Dome U. S., Inc.

Comment (Economic Factors): In 1991, the Horseshoe deposit reserves were reported at 1.5 milion tons of ore grading 0.039 opt gold.

Comment (Identification): The Horseshoe Mine deposit is encompassed by Placer Dome?s Mooney Basin mine area.

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References

Reference (Location): Rockwell, Barnaby W. and Hofstra, Albert H., 2008, Identification of quartz and carbonate minerals across northern Nevada using ASTER thermal infrared emissivity data?Implications for geologic mapping and mineral resource investigations in well-studied and frontier areas; Geosphere; February 2008; v. 4; no. 1; p. 218-246, Plate 12. http://geosphere.geoscienceworld.org/cgi/content/full/4/1/218/DC1
URL: http://geosphere.geoscienceworld.org/cgi/content/full/4/1/218/DC1

Reference (Location): Nutt, C. J. and Hofstra, A. H., 2007, Bald Mountain Gold Mining District, Nevada: A Jurassic Reduced Intrusion-Related Gold System; Economic Geology, v. 102, pp. 1129?1155. http://econgeol.geoscienceworld.org/cgi/reprint/102/6/1129.pdf
URL: http://econgeol.geoscienceworld.org/cgi/reprint/102/6/1129.pdf

Reference (Deposit): FEIS, 1995

Reference (Deposit): BLM, 2004, Bald Mountain Mine Exploration Program Programmatic Environmental Assessment NV040-04-023, Case File # N78825.

Reference (Deposit): NBMG MI-91 thru MI-00

Reference (Deposit): DEIS, 1995

Reference (Deposit): NBMG MI-88 through MI-02

Reference (Deposit): Nevada Land Status, 1990;

Reference (Deposit): www.placerdome.com

Reference (Deposit): USMX, 1990, Annual report for 1989.

Reference (Deposit): USMX, 1992, Annual report for 1991

Reference (Deposit): The Geological Society of Nevada 1996 Spring Field trip, Geology and Gold Deposits of Eastern Nevada, GSN Special Publication No. 23.

Reference (Deposit): Hitchborn and others, 1996, Geology and Gold Deposits of the Bald Mountain Mining District, White Pine County, Nevada, in Geology and Ore Deposits of the American Cordillera Symposium Proceedings, eds. A. Coyner and P. Fahey.

Reference (Deposit): Nutt, C.J., Hofstra, A.H., Hart, K.S., and Mortensen, J.K., 2000, Structural setting and genesis of gold deposits in the Bald Mountain-Alligator Ridge area, east-central Nevada, in Cluer, J.K., Price, J.G., Struhsacker, E.M., Hardyman, R.F., and Morris, C.L., eds., Geology and Ore Deposits 2000: The Great Basin and Beyond: Geological Society of Nevada Symposium Proceedings, May 15-18, 2000, p. 513-537.

Reference (Deposit): NBMG Map 91, 2nd, 3rd

Reference (Deposit): DEIS, 1995

Reference (Deposit): Nevada Land Status, 1990

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): FEIS, 1995

Reference (Deposit): Amer. Mines (1991-92), 1991 thru Amer. Mines (2000), 2001

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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.