Metamorphic Rock  Identification

February 09, 2001

This exercise is intended for use with the CSI rock set of 7 specimens. Written by Dr. Alan I. Benimoff and last revised 02/09/01.

Photos by Donald E. Clark

Please report any computer program problems to Dr. Alan I. Benimoff E-mail: benimoff@postbox.csi.cuny.edu

Metamorphic rocks are classified on the basis of  their texture. There are two classses - foliated or non-foliated. The foliated rocks exhibit a layering or foliation - a parallel alignment of inequidimensional mineral grains.

Determine the texture of the rock:

foliated  - rock is layered.

the rock is not layered.