Unnamed (near Prospect Creek)

Prospect, Undetermined

Commodities and mineralogy

Main commodities Au; Cu; Pb; Zn
Ore minerals chalcopyrite; galena; sphalerite
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale BT
Quadrangle map, 1:63,360-scale D-2
Latitude 66.7756
Longitude -150.591
Nearby scientific data Find additional scientific data near this location
Location and accuracy This prospect is in the canyon of Prospect Creek, about 4.0 mile east-southeast of the Prospect Creek camp on the Dalton Highway. It is about 0.3 mile east of the center of section 33, T. 23 N., R. 14 W., of the Fairbanks Meridian.

Geologic setting

Geologic description

An east-trending, vertica l(?), felsic dike or sill, 50 or more feet thick, is exposed in a series of knobs for about 0.8 mile in the canyon of Prospect Creek (Kurtak and others, 2002). The dike locally contains a stockwork of quartz veinlets with minor chalcopyrite, galena, and sphalerite. The rocks on the south side of Prospect Creek are interlayered slate, siltstone, phyllite, and andesite. The rocks on the north side of the creek are Triassic to Jurassic basalt, diabase, and gabbro. Samples of the quartz veinlets contained up to 1,522 parts per million (ppm) zinc, 835 ppm lead, 130 ppm copper, and 24 parts per billion gold. Avalon Development Corporation explored in the area in 1999.
Geologic map unit (-150.593676886778, 66.775148483135)
Mineral deposit model Mineralized felsic dike with chalcopyrite, galena, and sphalerite.

Production and reserves

Workings or exploration Only limited sampling by government and industry.
Indication of production None

Additional comments

MAS No. 0020390066

References

Reporters D.J. Grybeck (Contractor, U.S. Geological Survey)
Last report date 4/18/2010