Quartzite

Title

Identifier

AD-1

Description

This specimen is typical of the 5-10 foot thick coarse grained layers of glassy quartzites that comprise this formation. In most instances the quartzites are about 90% quartz. Feldspar and garnet are encountered locally. This is presumed to be the uppermost stratigraphic unit in the Adirondacks and typical of Adirondack quartzite generally.
Thin section shows primarily quartz with a minor amount of feldspar.

Date

1980

Contributor

Temporal Coverage

Accrual Method

Purchased from Western Minerals Inc.

Number of Thin Sections

1

Geolocation