J.C.

Prospect, Undetermined

Commodities and mineralogy

Main commodities As; Au; Fe

Geographic location

Quadrangle map, 1:250,000-scale KC
Quadrangle map, 1:63,360-scale B-5
Latitude 55.488
Longitude -131.616
Nearby scientific data Find additional scientific data near this location
Location and accuracy This prospect is known only from U.S. Bureau of Mines (1977) claim records. Its approximate location is at an elevation of about 1700 feet west of the west edge of Lake Harriet Hunt. The site is in section 5, T. 74 S., R. 91 E., of the Copper River Meridian. It corresponds to loc. 46 in Elliott and others (1978). The location is probably accurate within about 0.2 mile.

Geologic setting

Geologic description

The country rocks near this prospect are mainly flyschlike metasedimentary rocks, and subordinate andesitic and basaltic metavolcanic rocks that are intruded by Cretaceous stocks, sills, and dikes of feldspar-porphyritic granodiorite (Berg and others, 1988). The strata were regionally metamorphosed to greenschist-grade phyllite and semischist in Late Cretaceous time, and, near some of the granodiorite contacts, subsequently contact metamorphosed to hornblende hornfels (Brew, 1996, p. 27; Berg and others, 1988, p. 17). The premetamorphic age range of the strata is unknown. Berg and others (1988, p. 17) note that they closely resemble Upper Jurassic to mid-Cretaceous marine flysch and volcanic rocks nearby on Gravina Island.
According to U.S. Bureau of Mines claim records (1977), this prospect, which appears to be in metapelite at or near a granodiorite contact, was staked for As, Au, and Fe. No other information about it has been made public.
Geologic map unit (-131.617685432573, 55.4876458669279)

Production and reserves

Indication of production None

References