Glacier Creek Prospect, Bonnifield Mining District, Denali Borough, Alaska, USAi

Regional Level Types
Glacier Creek Prospect	Prospect
Bonnifield Mining District	Mining District
Denali Borough	Borough
Alaska	State
USA	Country

Location: The Glacier Creek claim block is at an elevation of about 4,400 feet, about midway between Sheep and Galcier creeks. The map site is in the SE1/4 of sec. 7, T. 11 S., R. 1 E., of the Fairbanks Meridian. The location is accurate to within 3,000 feet.
Geology: The country rocks at the Glacier Creek prospect are the Lower Mississippian to Middle Devonian Totatlanika Schist, composed predominantly of mafic and felsic metavolcanic and metavolcaniclastic rocks, minor pelitic schist, and fossiliferous marble (Wilson and others, 1998). The deposit consists of stratabound lenses of massive sulfides in strongly altered rhyolite schist (www.grayd.com, 1999). The sulfide minerals are chalcopyrite, galena, sphalerite. The hostrocks and stratabound massive sulfides indicate that the Galcier Creek prospect is a metamorphosed volcanogenic massive sulfide deposit.
Workings: At least three holes were drilled in the late 1990's, along with surface mapping and geochemical sampling.
Age: The sulfide minerals probably are syngenetic with their Lower Mississippian to Middle Devonian host rocks.
Alteration: The alteration minerals are chlorite and white mica.

Commodities (Major) - Ag, Au, Cu, Pb, Zn
Development Status: None
Deposit Model: Kuroko massive sulfide (Cox and Singer, 1986; model 28a)

Other Databases

Link to USGS - Alaska:	HE102

Other Regions, Features and Areas containing this locality

References