Ken Pond

Prospect, Undetermined

Commodities and mineralogy

Main commodities Ag

Geographic location

Quadrangle map, 1:250,000-scale KC
Quadrangle map, 1:63,360-scale B-6
Latitude 55.411
Longitude -131.707
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 250 feet on the northwest side of Ward Creek, approximately 0.2 mile southwest of the outlet of Ward Lake. The site is in section 34, T. 74 S., R. 90 E., of the Copper River Meridian. It corresponds to loc. 58 in Elliott and others (1978). The location probably is accurate within about 0.2 mile.

Geologic setting

Geologic description

This part of Revillagigedo Island is underlain mainly by marine, pelitic sedimentary rocks and subordinate andesitic or basaltic volcanic rocks that are intruded by Cretaceous stocks, sills, and dikes of feldspar-porphyritic granodiorite, and by a stock and probably related plugs of Tertiary gabbro (Berg and others, 1988). The strata were regionally metamorphosed to greenschist-grade phyllite and semischist in Late Cretaceous time. They subsequently were contact metamorphosed to hornblende hornfels: locally, near some of the Cretaceous granodiorite contacts, and, more widely, peripheral to the Tertiary gabbro. The premetamorphic age range of the strata is uncertain. Berg and others (1988) note that they closely resemble Upper Jurassic to mid-Cretaceous flysch and volcanic rocks nearby on Gravina Island. The country rocks are cut by a high-angle fault along Tongass Narrows that displays about 4 miles of right-lateral offset.
According to U.S. Bureau of Mines claim records (1977), this prospect, which appears to be in hornfelsed metapelitic strata near the contact of a Tertiary gabbro stock, was staked for silver. No other information about it has been made public.
Geologic map unit (-131.708685274147, 55.4106493464777)
Age of mineralization Tertiary?

Production and reserves

Indication of production None

References