The Cindy 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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Cindy MRDS details
Site Name
Primary: Cindy
Commodity
Primary: Copper
Primary: Silver
Primary: Gold
Secondary: Lead
Secondary: Zinc
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 Type: L
Alteration Text: Calc-silicate.
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Sphalerite
Ore: Pyrite
Ore: Galena
Ore: Chalcopyrite
Gangue: Epidote
Comments
Comment (Exploration): Status = Not determined
Comment (Geology): Geologic Description = The Cindy occurrence 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 located 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 the mineralogy, mineralization, and alteration of these skarns categorize them as continental-margin, porphyry-related copper skarns. Early reports (DeYoung, 1978) group the Cindy prospect with the Mike (CH100), Vicki (CH097), and Pilgrim (CH099) prospects, all of which Newberry and others (1986) classified as Cu (Zn-Ag?) skarns. The mineralogy of a specimen (identified only as being from the Mike-Vicky-Cindy prospects) includes epidote, chalcopyrite, pyrite, and sphalerite (Newberry and others, 1986). Analyses 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 Cindy 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 gold deposit, although no data are given.
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 (Reference): Primary Reference = Newberry and others, 1986
Comment (Workings): Workings / Exploration = Claims located in 1972. Surface sampling.
Comment (Deposit): Other Comments = See also: Mike (CH100), Vicki (CH097), Pilgrim (CH099), Evelyn Lee (CH059), Luna (CH101), Victor (CH064), and Ginger (CH060)..In early reports (DeYoung, 1978; Newberry and others, 1986) the Cindy prospect is grouped with all or some of the Pilgrim, Mike, and Vicki prospects.
Comment (Deposit): Model Name = Cu skarn deposits (Cox and Singer, 1986; model 18b)
References
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): 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): 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.
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