anorthite(redirected from anorthitic)
Also found in: Dictionary, Thesaurus.
Related to anorthitic: labradorite
anorthite(ănôr`thīt): see feldsparfeldspar
, an abundant group of rock-forming minerals which constitute 60% of the earth's crust. Chemically the feldspars are silicates of aluminum, containing sodium, potassium, iron, calcium, or barium or combinations of these elements.
..... Click the link for more information. .
The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved. www.cc.columbia.edu/cu/cup/
The white, grayish, or reddish calcium-rich end member of the plagioclase feldspar series; composition ranges from Ab10 An90 to Ab0 An100, where Ab = NaAlSi3O8 and An = CaAl2Si2O8. Also known as calciclase; calcium feldspar.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.