Glacier Creek

Prospect, Active

Commodities and mineralogy

Main commodities Ag; Au; Cu; Pb; Zn
Ore minerals chalcopyrite; galena; sphalerite
Gangue minerals chlorite; feldspar; quartz; white mica

Geographic location

Quadrangle map, 1:250,000-scale HE
Quadrangle map, 1:63,360-scale D-2
Latitude 63.98
Longitude -147.62
Nearby scientific data Find additional scientific data near this location
Location and accuracy 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.

Geologic setting

Geologic description

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.
Geologic map unit (-147.622335565701, 63.9795684529146)
Mineral deposit model Kuroko massive sulfide (Cox and Singer, 1986; model 28a)
Mineral deposit model number 28a
Age of mineralization The sulfide minerals probably are syngenetic with their Lower Mississippian to Middle Devonian host rocks.
Alteration of deposit The alteration minerals are chlorite and white mica.

Production and reserves

Workings or exploration At least three holes were drilled in the late 1990s, along with surface mapping and geochemical sampling.
Indication of production None

References