The Chisna Consolidated (Buckeye Group) 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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Chisna Consolidated (Buckeye Group) MRDS details
Site Name
Primary: Chisna Consolidated (Buckeye Group)
Commodity
Primary: Copper
Secondary: Gold
Secondary: Silver
Location
State: Alaska
District: Copper River
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Years of Production:
Organization:
Significant:
Physiography
Not available
Mineral Deposit Model
Model Name: Massive sulfide, Cyprus
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Name: Metavolcanic Rock
Role: Host
Age Type: Host Rock Unit
Age Young: Pliocene
Name: Metavolcanic Rock
Role: Host
Age Type: Host Rock
Age Young: Pliocene
Analytical Data
Not available
Materials
Ore: Pyrite
Ore: Chalcopyrite
Comments
Comment (Geology): Age = Probably Tertiary based on the age of the host rocks.
Comment (Exploration): Status = Inactive
Comment (Workings): Workings / Exploration = Two exploratory shafts sunk into shear zone. Samples contained 0.64% Cu and trace amounts of Au and Ag (Mihelich and Wells, 1957). Chip samples collected by Jansons and others (1984) contained 0.2% to 0.38% Cu.
Comment (Production): Production Notes = Some ore shipped (Mihelich and Wells, 1957).
Comment (Deposit): Model Name = Cyprus massive sulfide (Cox and SInger, 1986; model 24a)
Comment (Geology): Geologic Description = The deposit is in mafic volcanic rocks of the Tertiary Orca Group (Nelson and others, 1985). It consists of thin films of chalcopyrite and pyrite along fractures within shear zones in the hanging wall of the Landlocked Bay fault (Mihelich and Wells, 1957).? Samples contained 0.64% Cu and trace amounts of Au and Ag (Mihelich and Wells, 1957). Chip samples collected by Jansons and others (1984) contained 0.2% to 0.38% Cu.
Comment (Deposit): Other Comments = Nelson and others (1985) interpret the country rocks as accreted ocean crust. Crowe and others (1992; 1993) and Sainsbury (1993) discuss the genesis of the volcanogenic massive sulfide deposits in this area.? Chugach Alaska Corporation, Anchorage, Alaska has control of these lands.
Comment (Reference): Primary Reference = Mihelich and Wells, 1957
Comment (Reserve-Resource): Reserves = Inferred reserves of 1,200 tons @ 0.26% Cu and 1,200 tons @ 0.3% Cu (Mihelich and Wells, 1957).
References
Reference (Deposit): Mihelich, M., and Wells, R.R., 1957, Copper mines and prospects adjacent to Landlocked Bay, Prince William Sound, Alaska: U.S. Bureau of Mines Report of Investigations RI 5320, 21 p.
Reference (Deposit): Nelson, S.W., Dumoulin, J. A., and Miller, M.L., 1985, Geologic map of the Chugach National Forest, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-1645-B, 16 p., 1 sheet, scale 1:250,000.
Reference (Deposit): Cobb, E.H., 1972, Metallic mineral resources map of the Cordova quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-392, 1 sheet, scale 1:250,000.
Reference (Deposit): Crowe, D.E., Nelson, S.W., Brown, P.E., Shanks III, W.C., and Valley, J.W., 1992, Geology and geochemistry of volcanogenic massive sulfide deposits and related igneous rocks, Prince William Sound, south-central Alaska: Economic Geology, v. 87, p. 1722-1746.
Reference (Deposit): Jansons, Uldis, Hoekzema, R.B., Kurtak, J.M., and Fechner, S.A., 1984, Mineral occurrences in the Chugach National Forest, Southcentral Alaska: U.S. Bureau of Mines Open-File Report 5-84, 218 p., 2 sheets, scale 1:250,000.
Reference (Deposit): Crowe, D.E., Nelson, S.W., Brown, P.E., Shanks III, W.C., and Valley, J.W., 1993, Geology and geochemistry of volcanogenic massive sulfide deposits and related igneous rocks, Prince William Sound, south-central Alaska-A reply: Economic Geology, v. 88, p. 1285-1288.
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