The Unnamed (on tributary to Dalzell Creek) is a arsenic and gold 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 (on tributary to Dalzell Creek) MRDS details
Site Name
Primary: Unnamed (on tributary to Dalzell Creek)
Commodity
Primary: Arsenic
Primary: Gold
Secondary: Antimony
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: Polymetallic veins
Orebody
Not available
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: None.
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Arsenopyrite
Ore: Pyrite
Gangue: Quartz
Comments
Comment (Exploration): Status = Inactive
Comment (Reference): Primary Reference = This description
Comment (Geology): Geologic Description = This unnamed occurrence is a low sulfide-quartz vein that intrudes sandstone of the Lower Cretaceous Kahiltna Flysch (Bundtzen, Harris, and Gilbert, 1997). The vein strikes approximately N70E for a distance of about 110 meters, and averages about 0.5 meters wide. Disseminated arsenopyrite and pyrite comprise about 1 percent of the vein volume. One grab sample of the vein contained 1,600 ppm arsenic, 150 ppb gold, and 55 ppm antimony.
Comment (Workings): Workings / Exploration = The reporter investigated the site during a geological mapping program for the Alaska Division of Geological and Geophysical Surveys in 1988 (Bundtzen, Harris, and Gilbert, 1997). One grab sample of sulfide-bearing vein material contained 1,600 ppm arsenic, 150 ppb gold, and 55 ppm antimony.
Comment (Deposit): Model Name = Polymetallic vein (Cox and Singer, 1986; model 22c).
References
Reference (Deposit): Bundtzen, T.K., Harris, E.E., and Gilbert, W.G., 1997, Geologic Map of the eastern McGrath quadrangle, Alaska: Alaska Division of Geological and Geophysical Surveys Report of Investigations 97-14, 34 pages, one sheet, scale 1:125,000.
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