The York Creek (East) is a tungsten and tin 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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York Creek (East) MRDS details
Site Name
Primary: York Creek (East)
Commodity
Primary: Tungsten
Primary: Tin
Location
State: Alaska
District: Port Clarence
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: Alluvial placer Sn
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Scheelite
Ore: Cassiterite
Comments
Comment (Deposit): Model Name = Alluvial tin placer (Cox and Singer, 1986; model 39e)
Comment (Exploration): Status = Inactive
Comment (Geology): Age = Quaternary
Comment (Reference): Primary Reference = Mulligan, 1959 (USBM RI 5520)
Comment (Geology): Geologic Description = The headwater area of York Creek, on the north flank of the Brooks Mountain area, includes the contact zone of the Brooks Mountain granite stock and a small granite plug in Ordovician limestone (Sainsbury, 1969, plate 1). Fine-grained, carbonaceous metapelitic rocks of uncertain but probable Paleozoic age are also present and thermally metamorphosed near granite intrusions in this area. Three USBM churn-drill holes were completed at this locality and three others were completed about 1 mile downstream at an elevation of 400 feet (Mulligan, 1959, p. 6). Ten to 11 feet of gravel overlying shale and limy shale bedrock contain a trace of tin per cubic yard. Minerals in the heavy mineral concentrate included pyrite, limonite pseudomorphs after pyrite, garnet, tourmaline, apatite, barite, augite, traces of cassiterite, and scheelite (Mulligan, 1959, p. 16). The three churn-drill holes 1 mile downstream (400 feet elevation) encountered only 2 to 3 feet of gravel and contained a trace of tin; identified minerals there were pyrite, limonite pseudomorphs after pyrite, barite, tourmaline, garnet, and zircon (Mulligan, 1959, p. 16).
Comment (Workings): Workings / Exploration = Three USBM churn-drill holes were completed at this locality and three more 1 mile downstream (400 feet elevation).
References
Reference (Deposit): Sainsbury, C.L., 1969, Geology and ore deposits of the central York Mountains, western Seward Peninsula, Alaska: U.S. Geological Survey Bulletin 1287, 101 p.
Reference (Deposit): Cobb, E.H., 1975, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Teller quadrangle, Alaska: U.S. Geological Survey Open-File Report 75-587, 130 p.
Reference (Deposit): Cobb, E.H., and Sainsbury, C.L., 1972, Metallic mineral resource map of the Teller quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-426, 1 sheet, scale 1:250,000.
Reference (Deposit): Mulligan, J.J., 1959, Sampling stream gravels for tin, near York, Seward Peninsula, Alaska: U.S. Bureau of Mines Report of Investigations 5520, 25 p.
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