Unnamed Occurrence (ARDF - WI013; south of Pet Lake), Koyukuk Mining District, Yukon-Koyukuk Census Area, Alaska, USAi

Regional Level Types
Unnamed Occurrence (ARDF - WI013; south of Pet Lake)	- not defined -
Koyukuk Mining District	Mining District
Yukon-Koyukuk Census Area	Census Area
Alaska	State
USA	Country

This occurrence is located within Gates of the Arctic National Park.
Location: This occurrence is about 1.3 miles south-southeast of the east end of Pet Lake. It is in a creek at an elevation of about 3,250 feet, 0.5 mile east of the top of hill 4116, in the SE 1/4 of section 12, T. 32 N., R. 20 W., of the Fairbanks Meridian. The occurrence is the site of sample 348 in Dillon and others (1981). The location is accurate.
Geology: Dillon and others (1981, locality 348 [AOF 133B]) describe this occurrence as a mineralized layer 300 meters long and 5 to 250 cm thick, that is composed mainly of fine-grained quartz that contains chalcopyrite, and sparse cuprite and sphalerite. A single chip sample from outcrop contains 2% copper, more than 100 ppm antimony, and 20 ppm zinc. The rocks in the area are Devonian, Skajit Limestone and Middle or Upper Devonian black phyllite, dark limestone, and conglomerate (Dillon and others, 1986).
Workings: Only surface sampling.

Commodities (Major) - Cu, Sb, Zn
Development Status: None
Deposit Model: Polymetallic replacement deposit (?) (Cox and Singer, 1986; model 19a)

Other Databases

Link to USGS - Alaska:	WI013

Other Regions, Features and Areas containing this locality

References