Outwash West

Occurrence, Inactive

Commodities and mineralogy

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

Geographic location

Quadrangle map, 1:250,000-scale KL
Quadrangle map, 1:63,360-scale A-4
Latitude 68.1688
Longitude -155.2624
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is about 7.4 miles northwest of the small lake at the divide between a tributary to Kakivilak Creek and the head of Itilyiargiok Creek; it is about 0.4 mile south of the center of section 17, T. 32 N., R. 16 E. The location is accurate to within about a half mile.

Geologic setting

Geologic description

The rocks in the area consist of quartz and sandstone of the Upper Devonian, Hunt Fork Shale in thrust contact with the Upper Devonian or Lower Mississippian, Kanayut Conglomerate (Kurtak and others, 1995). The rocks are cut by silicified fault zones and quartz veins with sphalerite, galena, and pyrite, mostly found only as rubblecrop. A random chip sample from an outcrop of a quartz vein of unknown extent contained 7.1 percent zinc, 1.95 percent lead, and 0.2 percent copper. A series of selected samples of quartz veins contained up to 24 percent zinc, 1.6 percent lead, and 171 grams of silver per tonne. The extent of the mineralization was not determined.
Geologic map unit (-155.265272617785, 68.1683143711227)
Mineral deposit model Silver-lead-zinc-quartz veins and quartz breccia.
Age of mineralization Late Devonian or younger based on the age of the host rock. Possibly Late Jurassic to Cretaceous based on analogy with other deposits in the western Brooks Range.
Alteration of deposit Not mentioned.

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. 0020210008

References