The Morzhovoi Bay is a copper, gold, and silver 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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Morzhovoi Bay MRDS details
Site Name
Primary: Morzhovoi Bay
Commodity
Primary: Copper
Primary: Gold
Primary: Silver
Location
State: Alaska
District: Alaska Peninsula
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: Epithermal vein, generic
Model Name: Porphyry Cu
Orebody
Not available
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: Christie (1974) reports minor epidote in southeast corner of occurrence, as well as chlorite, clay, and possibly sericite. This mineral assemblage suggests propylitic, argillic, and possibly sericitc alteration. Leaching is partial to locally complete in the anomaly.
Rocks
Name: Volcanic Rock (Aphanitic)
Role: Host
Age Type: Host Rock
Age Young: Holocene
Name: Volcanic Rock (Aphanitic)
Role: Host
Age Type: Associated Rock
Age Young: Holocene
Analytical Data
Not available
Materials
Ore: Chalcopyrite
Ore: Pyrite
Gangue: Tourmaline
Comments
Comment (Reference): Primary Reference = Christie, 1974
Comment (Workings): Workings / Exploration = Brief reconnaissance geologic mapping and geochemical sampling reported by Christie (1974). Geochemical results showed copper typically less than 50 ppm and molybdenum less than 5 ppm, whereas silver ranged from 1.2 to 2.1 ppm and gold was as high as 0.03 ppm.
Comment (Geology): Geologic Description = Christie (1974) briefly examined a weak color anomaly 1.5 by 3 mi (2.4 by 5 km) in size, trending roughly east-west (110x). He reports finding a variety of rock types, including diorite, feldspar porphyry(?), monzonite, epiclastic rocks, and volcanic flows. His geologic description is scant, but he suggested further work if geochemistry indicated copper mineralization. It didn't, but there still is an unevaluated central covered area, including part of a lake, that is at least 1.5 mi (4 km) square. Fracturing is reported to be strong only locally on the west end of the anomaly. MacKevett and Holloway (1977) reported an altered zone associated with a breccia zone containing tourmaline, developed in a young volcanic terrane.
Comment (Deposit): Model Name = Copper porphyry, epithermal gold vein
Comment (Deposit): Model Number = 17, 25
Comment (Deposit): Other Comments = MacKevett and Holloway's (1977) report was based on an unreferenced industry source originally thought to be Christie (1974); however Christie (1974) does not mention breccia or tourmaline at this occurrence.
Comment (Exploration): Status = Inactive
Comment (Geology): Age = Miocene or younger
References
Reference (Deposit): MacKevett, E.M., Jr., and Holloway, C.D., 1977, Map showing metalliferous mineral deposits in the western part of southern Alaska: U.S. Geological Survey Open-File Report 77-169-F, 38 p., 1 sheet, scale 1:1,000,000.
Reference (Deposit): Christie, J.S., 1974, Aleut-Quintana-Duval 1974 joint venture, final report: Unpublished Quintana Minerals Corporation report, 24 p., 3 appendices, 2 maps. (Report held by the Aleut Corporation, Anchorage, Alaska.)
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