The Io is a zinc, lead, silver, and 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
Elevation:
Commodity: Zinc, Lead, Silver, Copper
Lat, Long: 67.8, -149.05000
Map: View on Google Maps
Satelite View
MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.
Io MRDS details
Site Name
Primary: Io
Commodity
Primary: Zinc
Primary: Lead
Primary: Silver
Primary: Copper
Secondary: Gold
Location
State: Alaska
District: Chandalar
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 Zn-Pb
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: Magnetite
Ore: Galena
Ore: Chalcopyrite
Comments
Comment (Exploration): Status = Inactive
Comment (Geology): Geologic Description = The Io prospect is one of a number of skarn deposits in the Chandalar area. Newberry and others (1986) classified this prospect as a Pb-Zn-Ag-Cu skarn and group it with a number of similar prospects that are northwest of and related to the Devonian(?)granitic plutons in the Horace Mountains. Many of these skarns exhibit both garnet and pyroxene prograde and epidote and actinolite retrograde mineral assemblages, and Newberry and others (1986) stated their characteristics place them in the category of continental-margin, porphyry-related copper skarns. They also suggest that the Pb-Zn-rich skarns represent distal concentrations surrounding the porphyry systems in the district. Newberry and others (1997) classify the Io prospect as a calcic Zn-Pb skarn and replacement body. A hand specimen of skarn from Io contains epidote, chlorite, actinolite, pyrite, galena, sphalerite, and magnetite (Newberry and others, 1986). Analysis of this specimen returned values of 12.6 percent Pb, 8.5 percent Zn, 0.04 percent Cu and 83 ppm Ag. In a listing posted on the Ventures Resource Corporation (currently exploring Doyon, Limited lands in the area under an agreement with Doyon, Limited) website (1998, URL http://www.venturesresource.com/) the Io prospect is classified as a Cu-Au prospect, although no supporting data are shown. The prospect is in an area underlain principally by Devonian Skajit Limestone and Hunt Fork Shale (DeYoung, 1978).
Comment (Deposit): Other Comments = See also: Deimos (CH061), Ginger (CH060), Hurricane-Diane (CH062), Venus (CH065), Pilgrim (CH099), Mike (CH100), Vicki (CH097), Cindy (CH098), and Evelyn Lee (CH059).
Comment (Deposit): Model Name = Zn-Pb skarn deposits (Cox and Singer, 1986; model 18c)
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
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/
The Top Ten Gold Producing States
These ten states contributed the most to the gold production that built the West from 1848 through the 1930s. The Top Ten Gold Producing States.
