chlorite-sericite schist

chlorite-sericite schist

[′klȯr‚īt ′ser·ə‚sīt ‚shist]
(petrology)
A low-grade, fine-grained variety of mica schist without biotite.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.