Mike

The Mike is a copper, silver, and gold 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: Mike

Commodity

Primary: Copper
Primary: Silver
Primary: Gold
Secondary: Zinc
Secondary: Lead

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: Occurrence
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 Text: Calc-silicate(?).

Rocks

Not available

Analytical Data

Not available

Materials

Ore: Chalcopyrite
Ore: Galena
Ore: Pyrite
Ore: Sphalerite
Gangue: Epidote

Comments

Comment (Workings): Workings / Exploration = Claims located in 1972.

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

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 (Exploration): Status = Inactive

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

Comment (Deposit): Other Comments = See also: Vicki (CH097), Pilgrim (CH099), Evelyn Lee (CH059), Luna (CH101), Victor (CH064), and Ginger (CH060). In early reports (DeYoung, 1978, Newberry and others, 1986) the Mike prospect is grouped with all or some of the Pilgrim, Cindy, and Vicki prospects.

Comment (Geology): Geologic Description = The Mike occurrence is one of four previously grouped occurrences which, in addition to Mike, included Vicki (CH097), Cindy (CH098), and Pilgrim (CH099) (DeYoung, 1978). Newberry and others (1986) described in general a group of skarn prospects in the Chandalar area which includes the Mike occurrence. This group of skarns is northwest of a belt of Devonian(?) granitic rocks informally named the Horace Mountain plutons. Many of the skarns exhibit both prograde and retrograde mineral assemblages. Newberry and others (1986) stated that the mineralogy, mineralization, and alteration of these skarns categorize them as continental-margin, porphyry-related copper skarns. Early data on this group of prospects indicated the presence of small amounts of tactite-associated copper mineralization (DeYoung, 1978). Newberry and others (1986) classified the Mike prospect as a Cu (Zn-Ag?) skarn, and Newberry and others (1997) classified it as a calcic Cu skarn. The mineralogy of a specimen (identified only as being from the Mike-Vicki-Cindy prospects) includes epidote, chalcopyrite, pyrite, and sphalerite (Newberry and others, 1986). An analysis of this specimen ran 0.25 percent Cu, 0.83 percent Zn, 0.002 percent Pb, and 0.5 ppm Ag. A listing for the Mike prospect on the Ventures Resource Corporation (currently exploring Doyon, Limited lands in the Chandalar area) website (1998, URL http://www.venturesresource.com/) classifies it as a Cu-Au deposit, although no supporting data are given.

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

Reference (Deposit): DeYoung, J.H., Jr., 1978, Mineral resources map of the Chandalar quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-878-B, 2 sheets, scale 1:250,000.

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

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