Apex; Nightingale Prospect, Hope Mining District, Kenai Peninsula Borough, Alaska, USAi

Regional Level Types
Apex; Nightingale Prospect	Prospect
Hope Mining District	Mining District
Kenai Peninsula Borough	Borough
Alaska	State
USA	Country

Roehm (1941) refers to work, including milling, being performed on veins exposed above the Oracle mine (SR142). The veins may be on the Apex and Nightingale properties.
Location: The prospect is located in the SE1/4 section 11, T. 6 N., R. 2 W., of the Seward Meridian, at an elevation of 3,000 feet. It is located on the south side of Summit Creek, above and west of the westernmost portal of the Oracle mine (SR142). This is location 56 of Tysdal (1978 [MF-880-A]) and location S-257 of Jansons and others (1984). This location is accurate to within a quarter of a mile.
Geology: The deposit at this prospect consists of northwest-striking, steeply dipping quartz veins near an 8-foot-wide, north-striking, felsic dike (Gilpatrick dike). Fractures in the dike are healed by vuggy quartz-carbonate veins. The veins contain sparse arsenopyrite, pyrite, galena, and very minor gold (Jansons and others, 1984). The host rock is the Valdez Group of Late Cretaceoius age (Nelson and others, 1985). The Gilpatrick dike is Eocene.
Workings: In 1982, the U.S. Bureau of Mines found two caved adits or trenches at elevations of 2,900 and 3,000 feet (Jansons and others, 1984). Both appeared to be driven approximately N70W into the hillside. The Bureau collected two grab samples of dump material; these assayed a trace to 0.73 ounce of gold per ton and 0.009 and 0.038 ounce of silver per ton.
Age: Cretaceous or younger; the veins cut sedimentary rocks of the Valdez Group of Late Cretaceous age and an Eocene dike.

Commodities (Major) - Au; (Minor) - Pb
Development Status: None
Deposit Model: Low-sulfide Au-quartz veins (Cox and Singer, 1986; model 36a)

Other Databases

Link to USGS - Alaska:	SR138

Other Regions, Features and Areas containing this locality

References