Main commodities | Ag; Au; Cu; Pb; Zn |
---|---|
Ore minerals | chalcopyrite; galena; sphalerite |
Gangue minerals | chlorite; feldspar; quartz; white mica |
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 descriptionThe 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. |
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 | |
Reporters | N. Van Wyck (Stevens Exploration Management Corporation) |
---|---|
Last report date | 4/7/2000 |