Cape Kubugakli Lode Occurrence, Bristol Bay Mining District, Kodiak Island Borough, Alaska, USAi

Regional Level Types
Cape Kubugakli Lode Occurrence	Occurrence
Bristol Bay Mining District	Mining District
Kodiak Island Borough	Borough
Alaska	State
USA	Country

Site is located in Katmai National Park.
Location: This site is located at the eastern end of Cape Kubugakli and encompasses an area of several square miles (Berg and Cobb, 1967, figure 4, locality 16; Cobb, 1972, MF 459, locality 2; MacKevett and Holloway 1977, locality 2; Church and others, 1989, MF 1539 I, locality 9).
Geology: Quartz stringers 1/2-inch or less thick are present in some felsic dikes and quartz diorite plugs of Miocene age, and in some of the sedimentary rocks cut by the intrusives. The stringers carry minor amounts of galena, gold, magnetite, molybdenite, pyrite, stibnite, and tetrahedrite. Bedrock consists of sedimentary units of the Shelikof formation of Jurassic age. Sericitic and propylitic alteration and silicification have been mapped over an area of several square miles and includes the mineralized rocks. Silt samples collected within this area may exhibit anomalous amounts of molybdenum, whereas panned concentrates may show anomalous antimony, boron, copper, gold, and silver (Church and others, 1989, MF 1539 I, Bulletin 1858). Gold, chalcopyrite, pyrite scheelite, and tourmaline have been noted in the concentrates. Mineralized rock samples may be anomalous in copper, gold, molybdenum, silver, and zinc.
Age: Miocene or younger
Alteration: Sericitic and propylitic alteration and silicification have been mapped over an area of several square miles.

Commodities (Major) - Au; (Minor) - Cu, Mo, Pb, Sb
Development Status: None
Deposit Model: Porphyry Cu, porphyry Cu-Mo, polymetallic vein (Cox and Singer; model 17, 21a,

Other Databases

Link to USGS - Alaska:	KR002

Other Regions, Features and Areas containing this locality

References