Unnamed (at northeast end of Noyes Island)

Occurrence, Probably inactive

Commodities and mineralogy

Main commodities Ag; Pb; Zn
Ore minerals galena; sphalerite
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale CR
Quadrangle map, 1:63,360-scale C-5
Latitude 55.5407
Longitude -133.58765
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is accurately located near the northeast tip of Noyes Island, about 0.3 mile east of the center of section 17, T. 73 S., R. 78 E.

Geologic setting

Geologic description

Maas and others (1991) sampled an outcrop of brown-stained, silicified limestone on the beach. A 0.5-foot-thick quartz vein in it contained 21.7 parts per million silver, 0.89 percent lead, and 1.08 percent zinc. The limestone is probably part of the Karheen Formation of Devonian age (Eberlein and others, 1983; Brew, 1996).
Geologic map unit (-133.589350434485, 55.54034058026)
Mineral deposit model Quartz vein with lead, silver, and zinc values.
Age of mineralization The vein is in Devonian rocks.
Alteration of deposit Silicification of limestone.

Production and reserves

Workings or exploration Only limited surface sampling.
Indication of production None