Unnamed Occurrence (ARDF - BN129; on north side of Dillon Creek), Council Mining District, Nome Census Area, Alaska, USAi

Regional Level Types
Unnamed Occurrence (ARDF - BN129; on north side of Dillon Creek)	- not defined -
Council Mining District	Mining District
Nome Census Area	Census Area
Alaska	State
USA	Country

Location: This occurrence is on the crest of a narrow ridge on the north side of Dillon Creek at an elevation of about 1,700 feet. Dillon Creek is a west headwater tributary of Pargon River. This is locality 80 of Gamble (1988).
Geology: Gossan float from near calc-silicate hornfels outcrops contains azurite, bornite (?), chalcopyrite, and malachite. Two grab samples contain 100 ppm Ag each, 700 and 110 ppm Cd, greater than 2 % Pb, 3.4 % and 8,000 ppm Zn, and 12 and 14 ppm Sb (Gamble, 1988). There is also some malachite staining in a felsic dike near this locality (Briskey, 1983). This occurrence, and several others in this part of the Bendeleben A-4 quadrangle, are in high grade metamorphic 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. The metamorphic rocks peripheral to the western Pargon pluton are also intruded by small, felsic dikes and plugs including quartz porphyry and muscovite granite.
Workings: No workings are known at this locality.
Age: Cretaceous; this occurrence is probably related to emplacement of the Pargon pluton which is assumed to be Cretaceous in age.
Alteration: Oxidation of sulfides has occurred.

Commodities (Major) - Ag, Cu, Pb, Zn
Development Status: None
Deposit Model: Zn-Pb skarn? Polymetallic vein ? (Cox and Singer, 1986; model 18c or 22c ?)

Other Databases

Link to USGS - Alaska:	BN129

Other Regions, Features and Areas containing this locality

References