Dun Glen Mine Project

Site Name

Primary: Dun Glen Mine Project
Secondary: Sierra Placer Gold Deposit

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Commodity

Primary: Gold

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Location

State: Nevada
County: Pershing
District: Sierra (Dun Glen, Orofino, Chafey, Sunshine) District

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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.

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Holdings

Not available

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Workings

Not available

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Ownership

Owner Name: Vector Mining, Inc.
Info Year: 2003

Owner Name: Tahoe Milling, Inc.
Info Year: 2003

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Production

Not available

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Deposit

Record Type: Site
Operation Category: Producer
Deposit Type: placer
Operation Type: Surface
Year First Production: 1870
Year Last Production: 2003
Discovery Year: 1860
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: Placer Au-PGE

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Orebody

Form: channels

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Structure

Not available

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Alterations

Not available

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Rocks

Name: Alluvium
Role: Host
Age Type: Host Rock
Age Young: Quaternary

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Analytical Data

Not available

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Materials

Ore: Gold
Gangue: Gravel

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Comments

Comment (Economic Factors): Total past production and reserves are unknown.

Comment (Identification): The current record describes an area covered by the Sierra Placer gold deposit described by earlier MRDS record M242417 from which some material has been incorporated into the current new record.

Comment (Location): The placer mining operation is situated near the mouth of Dun Glen Canyon, approximately 8.5 miles northeast of the town of Mill City and four miles east of Interstate 80.

Comment (Workings): The area is covered with numerous shallow surface prospects on the alluvial fan as well as an open pit, new pit, bulldozer work, dams ponding silts (1984)

Comment (Commodity): Ore Materials: free gold

Comment (Commodity): Gangue Materials: gravel

Comment (Deposit): Gold is extracted from the Dun Glen Creek gravels and adjacent terrace placer deposits using a mobile placer plant that operates within the active creek channel.

Comment (Development): The Sierra District placers were among the most productive in the state withan estimated $4 million in production before 1900, mostly by Chinese miners working first in Auburn and Barber Canyons, and later in Rockhill Canyon. There were some intermittent 20th century small-scale operations mostly in the 1930s and 1940s. The Dun Glen placer was listed as an active open pit gold mine in 1983, operated by Proquip, Inc., employing 16 persons. It was still active in 1984-1985. In March, 1985, it was reported that Homestake Mining Co. had signed an option to enter a joint venture with Proquip. The placer continued to be intermittently active to the present. Tahoe Milling, Inc., operators of the facility, known as the Dun Glen Mine Project, applied in 2003 for renewal of a Water Pollution Control Permit for the mine. The project consists of a physical separation facility with an estimated maximum production rate of 1,400,000 cubic yards per year. Gold is extracted from the Dun Glen Creek gravels and adjacent terrace placer deposits using a mobile placer plant that operates within the active creek channel. No chemicals are approved for use in the gold recovery process and make-up water, derived from Dun Glen Creek, is recycled. Facilities are required to be designed, constructed, operated and closed without any discharge or release in excess of those standards established in regulation except for meteorological events which exceed the design storm event. In May 2003, Vector Mining, Inc. applied to NDEP for a Reclamation Permit for the Dun Glen Mine.

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References

Reference (Deposit): Nevada Division of Environmental Protection, May 2003, Notice of Intent, application for a Reclamation Permit for the Dun Glen Mine.

Reference (Deposit): NBMG Map 84, 1983, Active Mines and Oil Fields.

Reference (Deposit): Division of Mine Inspection, 1985, 1984, 1983, 1982, 1981, Directory of Nevada Mine Operations Active During Calendar Years 1984, 1983, 1982, 1981, 1980, Inclusive.

Reference (Deposit): Garside, L. J., 27 Sep 84, NBMG Field Examination.

Reference (Deposit): NBMG Staff, 1985, NBMG OFR 85-3.

Reference (Deposit): The Mining Record, 5-15-85

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): Nevada Division of Environmental Protection, March 27, 2003, Notice of Proposed Action, Application for renewal of a Water Pollution Control Permit for the Dun Glen Mine Project.

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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.