Unnamed Occurrence (ARDF - MM096; lower Moose Creek canyon), Kantishna Mining District, Denali Borough, Alaska, USAi

Regional Level Types
Unnamed Occurrence (ARDF - MM096; lower Moose Creek canyon)	- not defined -
Kantishna Mining District	Mining District
Denali Borough	Borough
Alaska	State
USA	Country

Location: This occurrence is exposed on the east canyon wall of the Lower Canyon of Moose Creek at an elevation of about 1800-2000 feet. It is in the SE1/4 SE1/4 of section 3, T. 16 S., R. 18 W., Fairbanks Meridian. The location is accurate. The occurrence corresponds to rock sample locations 64 and 65 of Hawley and Associates (1978).
Geology: This occurrence consists of sulfide minerals and their oxidation products, sparsely disseminated in metafelsite schist of the upper Precambrian Birch Creek Schist. The schist strikes NE and dips NW, and crops out along strike for about 2000 feet in the walls of the Lower Canyon of Moose Creek. There appears to be a fault at the base of the mineralized zone. The schist contains disseminations of pyrite and lesser amounts of chalcopyrite and sphalerite. It is limonite stained and locally malachite stained. Representative samples contain 300-500 ppm copper, 465-965 ppm zinc, 50-135 ppm lead, and, in one sample, a trace of silver (Hawley and Associates, 1978, figure 4.1-A(1) and table 4,1-A(1)). The occurrence is similar to the one at MM022 on the southwest end of Alpha Ridge (Hawley and Associates, 1978, fig. 4.1-A(1)).
Age: Possibly late Precambrian, the protolith age of the Birch Creek Schist.
Alteration: Oxidation of iron and copper minerals.

Commodities (Major) - Cu, Zn; (Minor) - Pb
Development Status: None
Deposit Model: Possibly syngenetic and volcanogenic; the occurrence is hosted by metamorphosed

Other Databases

Link to USGS - Alaska:	MM096

Other Regions, Features and Areas containing this locality

References