Boulter Marble Tectonic Breccia Locality, Carlow Township, Hastings Co., Ontario, Canada
Altered rock remnants in marble. These remnants are frozen in a matrix of banded marble. The marble shows localized grey areas likely caused by hig percentage of included graphite. In the remnant rocks composing the breccia graphite and phlogopite can be seen. Granular diopside may also be present.
© Matthew Neuzil