Unnamed (head of Yankee Creek)

Prospect, Active

Commodities and mineralogy

Main commodities Ag; Au
Other commodities As; Pb; Sb
Ore minerals arsenopyrite; gold; iron oxide; jamesonite
Gangue minerals carbonate minerals; dickite; quartz

Geographic location

Quadrangle map, 1:250,000-scale ID
Quadrangle map, 1:63,360-scale D-1
Latitude 62.9591
Longitude -156.44737
Nearby scientific data Find additional scientific data near this location
Location and accuracy This prospect is at an elevation of about 2,000 feet on the south flank of feature locally called Telephone Hill. It is about 2.3 miles east-southeast of the mouth of Six Gulch and about 0.6 mile southeast of the center of section 11, T. 33 N., R. 38 W., of the Seward Meridian. The location is accurate.

Geologic setting

Geologic description

This prospect consists of: 1) quartz breccia and vuggy veins on the hanging wall of an altered, N30E-trending, granite-porphyry dike, and 2) sheeted quartz-sulfide veins in sandstone of the Upper Cretaceous, Kuskokwim Group. The deposit is exposed in several pits, and locally is oxidized to iron-oxide-rich gossan (Miller and Bundtzen, 1994; Bundtzen and Miller, 1997; Miller, Bundtzen, and Gray, 2005). Arsenopyrite, jamesonite, and visible free gold are reported from quartz-sulfide veins in the old prospect pits. Bundtzen and Laird (1983) collected samples that contained 730 parts per billion gold and 5.0 parts per million. The geology and mineralization at this prospect is similar to that at the Independence Mine (ID031) about 2 miles to the southwest.
Geologic map unit (-156.449733479913, 62.9584671973044)
Mineral deposit model Polymetallic vein or Porphyry Au-Cu (Cox and Singer, 1986; models 22c, 20c).
Mineral deposit model number 22c or 20c
Age of mineralization Probably Late Cretaceous, based on the age of nearby, dated intrusives at the Telephone Hill prospect (ID035).
Alteration of deposit Dike has undergone carbonatization and is silicified and argillized.

Production and reserves

Workings or exploration Prospect pits were dug prior to World War II. The Telephone Hill area was prospected by Westgold Inc., in 1989 and by Placer Dome Exploration in 1997. From 1997 to 2002, the prospect was included in the area of a an option agreement between Doyon Limited (the land owner) and North Star Exploration, Inc., a Colorado-based exploration firm.
Indication of production None