Unnamed (northeast of Chauik Mountain)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Ag; Pb; Zn
Ore minerals galena

Geographic location

Quadrangle map, 1:250,000-scale BN
Quadrangle map, 1:63,360-scale A-4
Latitude 65.15
Longitude -163.77
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is on the ridge crest between the headwaters of Nesbit and Stab Creeks at an elevation 2,400 feet. It is 3,500 feet northwest of Chauik Mountain which is 3,464 feet high.

Geologic setting

Geologic description

This occurrence is a thin gossan zone, about 10 inches wide, that trends across the ridge crest. It may be along a small fault. A grab sample contained 12.4 % Pb, 3.45 ounces/ton Ag, 6,250 ppm Zn, and less than 5 ppb Au (Hudson and Wyman, 1983). This base metal occurrence, and several others in this part of the Bendeleben A-4 quadrangle, are in high grade metasedimentary rocks that are structurally above or peripheral to the crosscutting Pargon pluton. The Pargon pluton is mostly granodiorite and assumed to be Cretaceous in age (Till and others, 1986). It was emplaced at shallower depths than the more deep-seated Bendeleben pluton to the east.
Geologic map unit (-163.77263746552, 65.1492759642458)
Mineral deposit model Galena-bearing vein in high grade metasedimentary rocks
Age of mineralization Cretaceous; this occurrence is probably related to emplacement of the Pargon pluton which is assumed to be Cretaceous in age.
Alteration of deposit Oxidation; thin gossan zone in metasedimentary rocks.

Production and reserves

Workings or exploration No workings are present and only reconnaissance sampling has been done.
Indication of production None

References

MRDS Number 10307283

References

Hudson, T.L., and Wyman, W. F., 1983, Interim report on areas of Seward Peninsula warranting further prospecting and evaluation: Anchorage, Anaconda Minerals Company internal report, 84 p., 7 plates. (Report held by Cook Inlet Region Inc., Anchorage, Alaska.)
Reporters Travis L. Hudson (Applied Geology)
Last report date 3/15/1999