Orthopyroxene gabbro

Title

Identifier

AD-6

Description

This specimen is typical of the saturated gabbros of the Adirondacks. The plagioclases are generally in the range of Anâ‚„â‚€ and the orthopyroxenes average close to Enâ‚†â‚€. Antiperthite is locally developed. Scattered grains of ilmenite and garnet occur. These gabbros may be genetically related to the anorthosites of the region.
Thin section shows plagioclase, orthopyroxene and hornblende.

Date

1980

Contributor

Western Minerals Inc.

Is Part Of

Anorthosite-Charnockite and Metamorphic Suite-Adirondack Mountains, New York

Spatial Coverage

Adirondack Highlands-collected from a road cut on NY Route 10 approximately 1/2 mile north of Kennels Pond.

Temporal Coverage

Precambrian

Accrual Method

Purchased from Western Minerals Inc.