Gold Lake Occurrence, Aniak Mining District, Dillingham Census Area, Alaska, USAi

Regional Level Types
Gold Lake Occurrence	Occurrence
Aniak Mining District	Mining District
Dillingham Census Area	Census Area
Alaska	State
USA	Country

Location: Frost (1990) and Frost and others (1992; 1993), reported mineralization approximately at this locality. It is about 1 mile east of Gold Creek, 4 miles north-northeast of Gold Lake, and 3 miles southwest of Kisaralik Lake. For this record, the map site is at an elevation of about 2,100 feet on the northwest end of a ridge, in the NW1/4 of section 12, T 2 N, R 59 W, of the Seward Meridian.
Geology: Oxidized pyrite-bearing rhyolite dikes and sulfide-bearing quartz veins cut Jurassic volcaniclastic rocks at this locality (Box and others, 1993). Anomalous values of Ag, As, Au, Cu, Hg, Mo, Pb, Sb, and W are found in quartz veins, altered dikes, and hydrothermal breccia (Frost, 1990; Frost and others, 1993). The maximum gold value is 2 ppm and the maximum silver value is 7 ppm. The dikes are variably replaced by sericite, illite, and quartz. Galena is the only sulfide mineral identified in the quartz veins.
Workings: Reconnaissance surface sampling and observation is all that has been reported for this locality.
Age: Late Cretaceous or Early Tertiary (?); postdates Jurassic host rocks and is probably related to the Upper Cretaceous/Lower Tertiary suite of intermediate to felsic intrusive rocks in the region (Box and others, 1993).
Alteration: Silicification, argillization, and oxidation.

Commodities (Major) - Ag, Au; (Minor) - Pb, Sb, W
Development Status: None
Deposit Model: Polymetallic veins (Cox and Singer, 1986; model 22c).

Other Databases

Link to USGS - Alaska:	BH023

Other Regions, Features and Areas containing this locality

References