Unnamed Prospect (ARDF - TA022; south of King Salmon River), Bristol Bay Region Mining District, Dillingham Census Area, Alaska, USAi

Regional Level Types
Unnamed Prospect (ARDF - TA022; south of King Salmon River)	- not defined -
Bristol Bay Region Mining District	Mining District
Dillingham Census Area	Census Area
Alaska	State
USA	Country

Location: This prospect is at an elevation of about 2,700 feet on a ridgecrest in the headwaters of unnamed south tributaries to the upper King Salmon River. For this record, the map site is near the west end of the north boundary of section 23, T 2 N, R 51 W, of the Seward Meridian.
Geology: Clark and others (1970 [OF 437]) report analytical data for several rock samples collected over about 6,000 feet of this ridgecrest. The samples contain weakly to strongly anomalous concentrations of Ag (to 3 ppm), Au (to 0.7 ppm), As, B, Cu, Mo, and Hg. These samples were collected in a large area of hornfels. Clark and others (1970 [OF 438]) generally describe hornfels with anomalous metal contents as strongly limonite stained and cut by numerous small quartz veins rarely exceeding 1/8 inch in width. Some of the quartz veins carry minor amounts of arsenopyrite, and arsenopyrite is also locally disseminated in hornfels. Some scorodite and malachite are also locally present.
Workings: Reconnaissance surface observation and sampling has taken place on this prospect.
Age: Late Cretaceous. Hornfels is developed in mid-Cretaceous clastic sedimentary rocks and is probably similar in age to hornfels at the Shotgun prospect (TA007). Intrusive rocks in the area of the Shotgun prospect are about 68 to 70 Ma in age.
Alteration: Silicification and oxidation.

Commodities (Major) - Ag, Au; (Minor) - As, B, Hg
Development Status: None
Deposit Model: Polymetallic veins? (Cox and Singer, 1986; model 22c)

Other Databases

Link to USGS - Alaska:	TA022

Other Regions, Features and Areas containing this locality

References