Saturn Prospect, Yukon-Koyukuk Census Area, Alaska, USAi

Regional Level Types
Saturn Prospect	Prospect
Yukon-Koyukuk Census Area	Census Area
Alaska	State
USA	Country

Location: The Saturn prospect is situated on an east-west ridgeline that divides an unnamed, northwest-flowing tributary leading into Smith Lake from an unnamed, east-flowing tributray of Post River; it is at an elevation of 5,350 feet (1,631 m) in the SE1/4 sec. 35, T. 26 N., R. 24 W., of the Seward Meridian. The location is based on maps supplied by Brewer and others (1992), and is only approximately known.
Geology: The Saturn Prospect consists of discontinuous layers of massive to semi-massive sphalerite and pyrrhotite within a 300 meter by 10 meter wide skarn zone in limestone of the Barren Ridge Limestone, a unit of the Dillinger subterrane (Bundtzen Harris, and Gilbert, 1997). The limestone is adjacent to highly altered, Late Cretaceous, Veleska Lake Volcanic field, which has in turn been intruded by a weakly mineralized granite porphyry pluton about 300 meters from the prospect (Bundtzen, Kline, and Clough, 1982). Results of limited grab samples conducted by North Pacific Mining Company show values ranging up to 0.3 percent copper, 20.9 percent zinc, and 9.3 grams/tonne silver (Brewer and others, 1992).
Workings: The Saturn prospect was discovered by the Anaconda Minerals Company in 1980 or 1981 (Brewer and others, 1992). Results of limited grab samples collected by North Pacific Mining Company show values of up to 0.3 percent copper, 20.9 percent zinc, and 9.3 grams/tonne silver (Brewer and others, 1992).
Age: Unknown; may be related to dated Tertiary intrusions of area (Solie and others, 1991).
Alteration: Sericite in granite intrusion.
Reserves: None.

Commodities (Major) - Zn; (Minor) - Ag, Cu
Development Status: None
Deposit Model: Low temperature lead-zinc skarn (Cox and Singer, 1986; model 18c).

Other Databases

Link to USGS - Alaska:	MG089

Other Regions, Features and Areas containing this locality

References