The Unnamed (between arms of Castle Bay) 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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Unnamed (between arms of Castle Bay) MRDS details
Site Name
Primary: Unnamed (between arms of Castle Bay)
Commodity
Primary: Copper
Secondary: Silver
Secondary: Molybdenum
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: Porphyry Cu
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Molybdenite
Ore: Chalcopyrite
Comments
Comment (Geology): Geologic Description = This site is described as an altered zone in Tertiary intrusive and volcanic rocks (MacKevett and Holloway, 1977). Fields (1977) reports a 3/4-square-mile color anomaly associated with a small quartz diorite body in this general area. A silt sample collected by Bear Creek Mining Company from a northeast-flowing drainage approximately 1 mile west of the site as plotted contained 138 ppm copper and 3.4 ppm molybdenum. Sparse chalcopyrite was noted in quartz diorite boulders.
Comment (Workings): Workings / Exploration = Bear Creek Mining Company did limited exploration at this occurrence during the period 1975-1976.
Comment (Geology): Age = Tertiary.
Comment (Deposit): Model Name = Porphyry copper? (Cox and Singer, 1986; model 17)
Comment (Deposit): Other Comments = This site is located on land conveyed to or patented by the Bristol Bay Native Corporation.
Comment (Reference): Primary Reference = Fields, 1977
Comment (Exploration): Status = Inactive
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): Fields, E.D., 1977, 1976 Annual report: Alaska search, Chignik area-Bristol Bay region: Bear Creek Mining Company, 44 p., 22 map sheets. (Report held by the Aleut Corporation, Anchorage, Alaska.)
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