n.
A white, red-brown, orange, or light blue principal strontium ore, essentially strontium sulfate, SrSO4, found in sedimentary rock. Also called celestine.
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.
