gageite
gageite
[′gā‚jīt] (mineralogy)
(Mn,Mg,Zn)8Si3O14·2H2O (or 3H2O) A mineral composed of a hydrous silicate of manganese, magnesium, and zinc.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.