Hippie Creek-South Occurrence, Yukon-Koyukuk Census Area, Alaska, USAi

Regional Level Types
Hippie Creek-South Occurrence	Occurrence
Yukon-Koyukuk Census Area	Census Area
Alaska	State
USA	Country

Peripheral to Bowser Creek-Main (MG068), Bowser Creek-Northeast (MG067), and Bowser Creek-Headwaters (MG066) prospects.
Location: The Hippie Creek-South occurrence is located on the east side of a cirque basin at an elevation of 4,100 feet (1,250 m) in the SW1/4 sec. 34, T. 25 N., R. 24 W., of the Seward Meridian (prospect #10 of Cobb, 1972). The occurrence is located to within 500 feet (152 m).
Geology: According to Reed and Elliott (1968, C 596), the Hippie Creek-South occurrence consists of locally abundant calcite, pyrite, and galena and minor to trace sphalerite and stibnite (?) in several 2 to 8 cm thick shear zones in limestone of the Terra Cotta Mountains Sandstone, a formation of the lower Paleozoic Dillinger subterrane (Bundtzen and others, 1988, 1997). The mineralized shear zone is parallel to a 6 m thick, pyrite-bearing felsite porphyry dike swarm (Bundtzen and others, 1988). The dikes are undated but a similar plutonic suite to the south yielded a 60.5 Ma age (Solie and others, 1991). The shear zone is discontinuously mineralized. Analyses cited in Reed and Elliott (1968, C 596) contained greater than 1,000 ppm silver, 1,000 ppm arsenic, greater than 0.50 percent lead, 0.30 percent antimony, and greater than 1.00 percent zinc.
Workings: The Hippie Creek-South occurrence was found and investigated by the late Bruce Reed during regional geological investigations in the southern Alaska Range by the U.S. Geological Survey (Reed and Elliott, 1968, C 596). Selected analyses contain greater than 1,000 ppm arsenic, greater than 0.50 percent lead, 0.30 percent antimony, and greater than 1.0 percent zinc.
Age: Unknown; inferred to be mid-Tertiary, based on isotopic age dating of nearby genetically related plutonic rocks (Solie and others, 1991).
Reserves: None known.

Commodities (Major) - Ag, Pb; (Minor) - Sb, Zn
Development Status: No
Deposit Model: Lead-zinc skarn deposit (Cox and Singer, 1986; model 18c).

Other Databases

Link to USGS - Alaska:	MG065

Other Regions, Features and Areas containing this locality

References