Ishut Creek Occurrence, Port Clarence Mining District, Nome Census Area, Alaska, USAi

Regional Level Types
Ishut Creek Occurrence	Occurrence
Port Clarence Mining District	Mining District
Nome Census Area	Census Area
Alaska	State
USA	Country

Location: Ishut Creek is a major, south-flowing headwater tributary to the Anikovik River; their confluence is about 4 miles upstream from the mouth of the Anikovik River at York on the Bering Sea. This locality, where 2 USBM churn-drill holes contained trace amounts of scheelite, is about 2.5 miles further upstream on Ishut Creek than locality 41 of Cobb and Sainsbury (1972). Cobb (1975) summarized relevant references under the name 'Ishut Cr.'.
Geology: Bedrock in the drainage is a slaty metapelitic and metasandstone sequence of unknown but probable Paleozoic age locally intruded by altered mafic bodies (Sainsbury, 1972). Heavy mineral concentrate from two USBM churn-drill holes contained pyrite, limonite psuedomorphs after pyrite, magnetite, apatite, tourmaline, zircon, and traces of scheelite (Mulligan, 1959, p. 19). Three churn-drill holes on lower Ishut Creek (about 0.3 miles upstream from the mouth) contained heavy mineral concentrates with pyrite, limonite psuedomorphs after pyrite, augite, ankerite and zircon. A trace of tin was detected but tin-bearing minerals were not identified (Mulligan, 1959, p. 18-19).
Workings: A total of five churn-drill holes were completed by the USBM on Ishut Creek in 1957 (Mulligan, 1959). Two of these were at the location of this occurrence and three were about 2.5 miles downstream (about 0.3 miles upstream from the mouth of Ishut Creek on Anikovik River).
Age: Quaternary

Commodities (Major) - W
Development Status: None
Deposit Model: Alluvial tin placer (Cox and Singer, 1986; model 39e)

Other Databases

Link to USGS - Alaska:	TE026

Other Regions, Features and Areas containing this locality

References