Shot Prospect, Bristol Bay Mining District, Dillingham Census Area, Alaska, USAi

Regional Level Types
Shot Prospect	Prospect
Bristol Bay Mining District	Mining District
Dillingham Census Area	Census Area
Alaska	State
USA	Country

Location: This prospect is in the southern Shotgun Hills near the top of a upland west of the headwaters of an unnamed north tributary to the King Salmon River. It is in the NW1/4, section 9, T. 3 N., R. 51 W. The location is accurate.
Geology: Clark and others (1970 [OF 438]) collected rock samples for about 5,000 feet along the crest of this upland. Several of these samples have weakly to strongly anomalous concentrations of silver (to 7 parts per million (ppm)), arsenic, boron, bismuth, copper, lead, antimony, tin, gold (to 0.1 ppm), and mercury. Bedrock is mostly hornfels in mid-Cretaceous clastic sedimentary rocks of the Kuskokwim Group. Clark and others (1970 [OF 438]) describe this hornfels 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 the hornfels. Some scorodite and malachite are locally present. Cominco examined the prospect during a reconnaissance exploration program in the early 1980s (Travis Hudson, personal knowledge, 2005). Felsic intrusives cut hornfels and intense tourmaline alteration is locally developed. Shot was originally considered a tin-silver prospect and stream sediments, panned concentrates, and rock samples do contain anomalous tin values. Rock samples collected during initial exploration contained up to 510 ppb gold. TNR Gold Corporation (2005) was exploring this prospect in 2005 as part of their district exploration program centered on the Shotgun prospect (TA007).
Workings: Originally found during regional mapping by the U.S. Geological Survey in the late 1960's Examined by Cominco Exploration in 1981 during an initial reconnaissance of the area. TNR Gold Corporation was exploring this prospect in 2005 as part of their district exploration program centered on the Shotgun prospect (TA007).
Age: Probably Latest Cretaceous, the age of intrusive rocks and mineralization in the similar Shotgun (TA007) prospect nearby.
Alteration: Silicification and tourmalinization.

Commodities (Major) - Ag, Au, Sn; (Minor) - As, B, Bi, Cu, Hg, Pb, Sb
Development Status: None
Deposit Model: Quartz veins in hornfels and felsic intrusive rocks; possibly polymetallic vein

Other Databases

Link to USGS - Alaska:	TA021

Other Regions, Features and Areas containing this locality

References