Unnamed Prospect (ARDF - SR248; above Northeast Cove), Prince William Sound Mining District, Valdez-Cordova Census Area, Alaska, USAi

Regional Level Types
Unnamed Prospect (ARDF - SR248; above Northeast Cove)	- not defined -
Prince William Sound Mining District	Mining District
Valdez-Cordova Census Area	Census Area
Alaska	State
USA	Country

Location: The prospect is located 0.7 mile north of the head of Northeast Cove of Drier Bay and is at an elevation of about 1,000 feet. It is the SW1/4 section 21, T. 3 N., R. 10 E., of the Seward Meridian. This is location S-57 of Jansons and others (1984). This location is accurate to within a quarter of a mile.
Geology: The prospect consists of a 4-foot- by 20-foot open cut exposing interbedded graywacke and slate that contains a silicified, sulfide-bearing zone (Kurtak and Jeske, 1986). The slate and graywacke unit is roughly 300 by 1,000 feet and is enclosed by greenstone; both units are mapped as Orca Group of early Teriary age (Nelson and others, 1985). The siliceous sulfide-bearing zone varies from 6 inches to 3 feet wide and contains from 5 to 30 percent sulfide minerals. These minerals consist of pyrite, chalcopyrite, and some covellite (Kurtak and Jeske, 1986). Samples from the open cut contained from 25 ppm to 3.8 percent copper and from 0.2 to 28 ppm silver (Kurtak and Jeske, 1986).
Workings: Workings on the prospect are a 5- by 35-foot open cut (Kurtak and Jeske, 1986).
Age: Tertiary or younger; the mineralization is in rocks of the Orca Group of Tertiary age.
Alteration: The mineralization is in silicified slate, but no details about the alteration are given (Kurtak and Jeske, 1986).

Commodities (Major) - Cu; (Minor) - Ag, Zn
Development Status: None
Deposit Model: Besshi massive sulfide (Cox and Singer, 1986; model 24b)

Other Databases

Link to USGS - Alaska:	SR248

Other Regions, Features and Areas containing this locality

References