Unnamed (near VABM 592, south of Banner Peak) (ARDF #NM232) Au

Unnamed (near VABM 592, south of Banner Peak)

Occurrence, Inactive

Commodities and mineralogy

Main commodities	Au
Other commodities	Pb; Sb
Ore minerals	arsenopyrite; galena; pyrite; stibnite
Gangue minerals	albite; quartz

Geographic location

Quadrangle map, 1:250,000-scale	NM
Quadrangle map, 1:63,360-scale	C-1
Latitude	64.5644
Longitude	-165.4369
Nearby scientific data	Find additional scientific data near this location
Location and accuracy	This occurrence is at an elevation of 400 to 500 feet on the southwest flank of Banner Peak. It is about 800 feet southwest of VABM 592 in the east-central part of section 3, T. 11 S., R. 34 W., Kateel River Meridian. It is locality 28 of Hummel (1962 [MF-247]).

Geologic setting

Geologic description Hummel (1962 [MF 247]) described old prospect pits south of Banner Peak near hill elevation 592 that contained lead- and antimony-bearing minerals, presumably galena and stibnite. The area was included in a soil geochemical survey conducted by BHP in 1990 and was anomalous in arsenic and gold. Drilling and trenching in 1992 by Newmont Mining Company identified replacement masses of tabular albite almost pegmatoid in appearance. These masses contained arsenopyrite and assayed as much as 0.25 ounce of gold per ton in zones as much as 5 feet thick. The masses appear to be podiform, and continuity was not demonstrated. They resemble the albitic replacement deposits at Alpha Ridge (NM171), Goodluck Gulch (NM202), and the Walsh Cut (NM214) at Rock Creek. Country rock in the area south of Banner Peak is mainly graphitic schist and quartzite (Bundtzen and others, 1994).
Geologic map unit	(-165.439494866848, 64.5636326127893)
Mineral deposit model	Albitic replacements in schist; allied to Low-sulfide Au-quartz veins (Cox and Singer, 1986; model 36a).
Mineral deposit model number	36a
Age of mineralization	Mid-Cretaceous or younger; superimposed on schist metamorphosed during the mid-Cretaceous.
Alteration of deposit	Albitization.

Production and reserves

Workings or exploration	Old exploration pits and trenches are of pre-1920 vintage. A soil geochemical survey was completed in 1990 by BHP, and trenching and drilling was done in 1992 by Newmont Mining Company.
Indication of production	None

References

MRDS Number	A012850
References Bundtzen, T.K., Reger, R.D., Laird, G.M., Pinney, D.S., Clautice, K.H., Liss, S.A., and Cruse, G.R., 1994, Progress report on the geology and mineral resources of the Nome mining district: Alaska Division of Geological and Geophysical Surveys, Public Data-File 94-39, 21 p., 2 sheets, scale 1:63,360. Hummel, C.L., 1962, Preliminary geologic map of the Nome C-1 quadrangle, Seward Peninsula, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-247, 1 sheet, scale 1:63,360.
Reporters	C.C. Hawley and Travis L. Hudson
Last report date	7/10/2000