Deimos

The Deimos is a copper mine located in Alaska.

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

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Site Name

Primary: Deimos

Commodity

Primary: Copper
Secondary: Silver

Location

State: Alaska
District: Koyukuk

Land Status

Not available

Holdings

Not available

Workings

Not available

Ownership

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Prospect
Operation Type: Unknown
Years of Production:
Organization:
Significant:

Physiography

Not available

Mineral Deposit Model

Model Name: Skarn Cu

Orebody

Not available

Structure

Not available

Alterations

Alteration Type: L
Alteration Text: Calc-silicate.

Rocks

Not available

Analytical Data

Not available

Materials

Ore: Pyrite
Ore: Magnetite
Ore: Chalcopyrite
Gangue: Garnet
Gangue: Epidote

Comments

Comment (Reference): Primary Reference = Newberry and others, 1986

Comment (Workings): Workings / Exploration = Surface sampling.

Comment (Deposit): Model Name = Cu skarn deposits (Cox and Singer, 1986; 18b)

Comment (Deposit): Other Comments = See also: Io (CH102), Ginger (CH060), Hurricane-Diane (CH062), Venus (CH065), Pilgrim (CH099), Mike (CH100), Vicki (CH097), Cindy (CH098), and Evelyn Lee (CH059).

Comment (Exploration): Status = Not determined

Comment (Geology): Age = Devonian based on reported Early Devonian Pb/Pb zircon ages from the associated Baby Creek batholith and Horace Mountain plutons (Dillon and others, 1996).

Comment (Geology): Geologic Description = The Deimos prospect is one of a number of skarn deposits in the Chandalar area which have been described in general by Newberry and others (1986). These skarns are all northwest of a belt of Devonian(?) granitic rocks informally named the Horace Mountain plutons. Many exhibit both prograde and retrograde mineral assemblages. Newberry and others (1986) stated that their mineralogy, mineralization, and alteration place them in the category of continental-margin, porphyry-related copper skarns. Published information about the geology of individual skarns is scarce, but brief descriptions of the prospect by Newberry and others (1986) indicated that the Deimos prospect is a Cu-Ag skarn. Based on a hand specimen description (Newberry and others, 1986), the skarn contains garnet, epidote, chalcopyrite, and pyrite. Analysis of the hand specimen returned a value of 1.9 percent Cu. In a listing posted on the Ventures Resource Corporation (currently exploring Doyon lands in the area under an agreement with Doyon, Limited) website (URL http://www.venturesresource.com/), the Deimos prospect is classified as a Cu-Au prospect, although there are no data supporting the presence of appreciable gold.

References

Reference (Deposit): Newberry, R.J., Allegro, G.L., Cutler, S.E., Hagen-Levelle, D.D., Adams, D.D., Nicholson, L.C., Weglarz, T.B., Bakke, A.A., Clautice, K.H., Coulter, G.A., Ford, M.J., Myers, G.L., and Szumigala, D.J., 1997, Skarn deposits of Alaska, in Goldfarb, R.J., and Miller, L.D., eds., Mineral Deposits of Alaska: Economic Geology Monograph 9, p. 355-395.

Reference (Deposit): Newberry, R.J., Dillon, J.T., and Adams, D.D., 1986, Regionally metamorphosed calc-silicate-hosted deposits of the Brooks Range, northern Alaska: Economic Geology, v. 81, p. 1728-1752

Reference (Deposit): Ventures Resource Corporation, 1998, 1997 Annual Report and Website (Worldwide Web URL http://www.venturesresource.com/).
URL: http://www.venturesresource.com/

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