The Cache Creek - South is a zinc 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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Cache Creek - South MRDS details
Site Name
Primary: Cache Creek - South
Commodity
Primary: Zinc
Location
State: Alaska
District: McGrath
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: Mississippi Valley, S.E. Missouri Pb-Zn
Orebody
Not available
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: Recrystallized dolomite.
Rocks
Role: Host
Age Type: Host Rock
Age Young: Silurian
Analytical Data
Not available
Materials
Ore: Sphalerite
Gangue: Dolomite
Comments
Comment (Geology): Age = the host rock is probably Silurian based on age of 'Sic' unit (Blodgett, 1982). The age of the mineralization is unknown.
Comment (Reference): Primary Reference = Andrews and Rishel, 1982
Comment (Workings): Workings / Exploration = The Cache-Creek-South was discovered in the late 1970s during regional exploration conducted by WGM Inc. on lands selected by Doyon Ltd. Four surface grab samples contained 0.64 percent to 6.40 percent zinc and averaged 2.20 percent zinc, with no appreciable lead (Andrews and Rishel, 1982).
Comment (Deposit): Other Comments = See Reef Ridge (MD055) and Cache Creek North (MD037) Mississippi Valley Type showings. The Cache Creek - South occurrence is on lands selected or owned by Doyon Ltd. For further information, contact Doyon Ltd. at 210 1st Ave., Fairbanks, Alaska, 99701.
Comment (Geology): Geologic Description = Intense zinc-bearing solution breccia zone hosted in Paradise Fork Formation of Dutro and Patton (1982), which is also unit 'Sic' of Andrews and Rishel (1982). The zone appears to be about 10 feet (3 m) thick, and can be traced for about 200 feet (61 m) along a strike direction of N 55 E. Mineralization difficult to recognize due to the elusive color (pale tan) of sphalerite. Host rock is inferred to be Silurian based on age of the 'Sic' unit (Patton and others 1980; Blodgett, 1982). Four surface grab samples ranged from 0.64 percent to 6.40 percent zinc and averaged 2.20 percent zinc, with no appreciable lead (Andrews and Rishel, 1982).
Comment (Exploration): Status = Inactive
Comment (Deposit): Model Name = Southeast Missouri Pb-Zn (Cox and Singer, 1986; model no. 32a) or Mississippi Valley Type
References
Reference (Deposit): Blodgett, R.B., 1982, Stratigraphy of Reef Ridge project area: WGM Inc., Anchorage, Alaska, Reef Ridge Project area, Block 10, Doyon region: 34 pages.
Reference (Deposit): Andrews, Tom, and Rishel, John, 1982, Annual Report for 198, Reef Ridge I-to-XIII Project Areas, Kuskokwim Block, Alaska: Anchorage, Alaska, WGM Inc., Project Report 4, 45 pages, two sheets at 1:63,360 and 1:20,000 scales. (Report held by Doyon, Limited, Fairbanks, Alaska.)
Reference (Deposit): Dutro, T.T. Jr., and Patton,W.W. Jr., 1982, New Paleozoic Formations in the northern Kuskokwim Mountains, west-central Alaska: U.S. Geological Survey Bulletin 1529-H, p. H13-H22.
Reference (Deposit): Patton, W.W., Jr., Moll, E.J., Dutro, J.T., Jr., Silberman, M.L., and Chapman, R.M., 1980, Preliminary geologic map of Medfra quadrangle, Alaska: U.S. Geological Survey Open-File Report 80-811-A, 1 sheet, scale l:250,000.
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