johnstrupite
johnstrupite
[′jän·strə‚pīt] (mineralogy)
A mineral that is composed of a complex silicate of cerium and other metals, approximately (Ca,Na)3(Ce,Ti,Zr)(SiO4)2F; occurs in prismatic crystals.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.