Unnamed Occurrence (ARDF - SI156; South Arm; Kelp Bay), Chichagof Mining District (Chicagof Mining District), Sitka, Alaska, USAi

Regional Level Types
Unnamed Occurrence (ARDF - SI156; South Arm; Kelp Bay)	- not defined -
Chichagof Mining District (Chicagof Mining District)	Mining District
Sitka	City Borough
Alaska	State
USA	Country

Location: This occurrence is at sea level on the west side of the South Arm of Kelp Bay, about 1.3 miles from the head of the bay. The occurrence is 0.5 mile south-southeast of the northwest corner of sec. 13, T. 53 S., R. 65 E. It is location P-103 of Bittenbender and others (1999), location 63 of Cobb (1972, 1978), and MAS no. 0021140190 (U.S. Bureau of Land Management, 2002). The location is accurate within 0.2 mile.
Geology: The rocks in the vicinity of this occurrence are part of the Jurassic and/or Triassic, Kelp Bay Group which consists of phyllite, quartzite greenschist, greenstone, graywacke, and semischist.( Loney and others, 1975). Loney and others (1963) noted pyrite, chalcopyrite, covellite, and bornite in quartz veins and iron-stained siliceous rocks in this area. Bittenbender and others (1999) collected two samples here: 1) mudstone and tuff with 5 percent pyrite and pyrrhotite, and 2) altered metavolcanic rock with minor chalcopyrite and pyrite. The samples contained less than 5 parts per billion gold, 128 and 485 parts per million (ppm) copper, and 164 and 310 ppm zinc; all of the other common metallic elements were at background level.
Workings: Apparently only surface sampling by government geologists.
Age: Triassic or younger based on the age of the host rocks.
Alteration: Unspecified alteration of metavolcanic rocks.

Commodities (Major) - Au, Cu, Zn
Development Status: None

Other Databases

Link to USGS - Alaska:	SI156

Other Regions, Features and Areas containing this locality

References