Chloritoid schist

Title

Chloritoid schist

Identifier

DUCO-7

Description

Schist with coarse chloritoid crystals (up to 1/8 inch) without preferred orientation. These crystals grow across the foliation developed in the schist, but appear deformed. Chloritoid is a silicate mineral made in metamorphism. It also contains garnet, muscovite, chlorite, feldspar, and quartz.

The thin section shows a large chloritoid grain, and euhedral garnet. Fine-grained muscovite and biotite are present, along with strings of an opaque, likely graphite.

This rock is from the garnet zone in the Barrovian metamorphic sequence (intermediate metamorphism).

Contributor

Western Minerals

Is Part Of

<a href="http://geosciencecollections.milne-library.org/collections/show/18">Barrovian Metamorphic Sequence--Dutchess County, New York</a>

Spatial Coverage

Dutchess Co., NY

Accrual Method

Purchased from Western Minerals Inc.

Unit

Barrovian Metamorphic Sequence

Number of Thin Sections

1

Geolocation