Unnamed (near Wiehl Mountain)

Occurrence, Undetermined

Commodities and mineralogy

Main commodities Ag; As; Au; Cu; Pb; Zn
Ore minerals arsenopyrite; chalcopyrite; galena; gold; sphalerite
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale CH
Quadrangle map, 1:63,360-scale C-6
Latitude 67.6576
Longitude -149.5105
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is at elevation of about 3,600 feet, about 3.9 miles north-northeast of Wiehl Mountain (peak 5765). It is about 0.2 mile northeast of the center of section 26, T. 33 N., R. 9 W. The location is accurate to within a half mile.

Geologic setting

Geologic description

This occurrence was originally described as galena in Devonian(?) greenstone and greenschist near a contact with Devonian siltstone and grit (Brosgé and Reiser, 1964). Mulligan (1974) and Kurtak and others (2002) found a 3-foot-wide quartz vein exposed for 100 feet along strike. No sulfides were seen in place in the quartz vein but there is abundant quartz float in talus below the vein with 2 to 3 percent disseminated pyrite, arsenopyrite, chalcopyrite, galena, and sphalerite. Three samples averaged 72 parts per billion gold, 2.1 parts per million (ppm) silver, 258 ppm copper, 1,260 ppm lead, 303 ppm zinc, and 3,454 ppm arsenic.
Geologic map unit (-149.513261413478, 67.6571946597778)
Mineral deposit model Polymetallic quartz vein (Cox and Singer, 1986; model 22c).
Mineral deposit model number 22c

Production and reserves

Workings or exploration Only limited sampling by government agencies.
Indication of production None
Reserve estimates None.
Production notes None.

Additional comments

MAS No. 0020310132