Unnamed Prospect (ARDF - IL046; east of head of Lake Fork of Paint River), Redoubt Mining District, Kenai Peninsula Borough, Alaska, USAi

Regional Level Types
Unnamed Prospect (ARDF - IL046; east of head of Lake Fork of Paint River)	- not defined -
Redoubt Mining District	Mining District
Kenai Peninsula Borough	Borough
Alaska	State
USA	Country

Location: This prospect is at an elevation of about 1,600 feet, east of the head of Lake Fork and 1.35 miles west of hill 3169. The prospect is in the NW1/4 sec.10, T. 11 S., R. 31 W., Seward Meridian. The site corresponds to locality 17 of Detterman and Cobb (1972) and locality 17 of Reed (1967), and is accurate within about 0.5 mile.
Geology: The area of this prospect is underlain mainly by Jurassic, biotite-hornblende quartz diorite (Detterman and Reed, 1980). At the prospect, the quartz diorite intrudes hornblende gabbro (Reed, 1967). The prospect is a 100- to 150-foot-wide breccia zone in quartz diorite. The breccia is cut by a 0.5- to 2-foot-wide, malachite-stained fault zone and by many smaller, sulfide-rich, quartz(?) veins. The sulfides almost certainly include chalcopyrite and pyrite. Four of five grab samples of mineralized rock collected by Reed (1967) contained more than 0.5 percent copper. One grab sample assayed 11.9 parts per million (ppm) gold, 20 ppm silver, and more than 5,000 ppm copper. Selected sulfide-rich specimens from the mineralized fault zone yielded assays of more than 0.5 ounce of gold per ton (Reed, 1967; Cobb, 1976). The prospect was restaked in 1964, possibly for iron present as magnetite(?). A short, partly caved, adit found by Reed (1967) dates from an earlier period of exploration.
Workings: The prospect was explored by a short adit that was partly caved when visited by Reed (1967). The prospect area was restaked in 1964 during a flurry of exploration for iron on the Alaska Peninsula.
Age: Jurassic or younger.
Alteration: Oxidation of copper.

Commodities (Major) - Ag, Au, Cu; (Minor) - Fe?
Development Status: None
Deposit Model: Polymetallic vein? (Cox and Singer, 1986; model 22c).

Other Databases

Link to USGS - Alaska:	IL046

Other Regions, Features and Areas containing this locality

References