gahnite definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
a dark green to black, very hard, brittle, crystalline mineral, ZnAlO, found in schists, pegmatites, etc.; zinc spinel
Origin: German gahnit, after J. G. Gahn (1745-1818), Swedish chemist
gahnite definition by American Heritage Dictionary
A dark green to brown or black mineral, ZnAl2O4. Also called zinc spinel.
Origin: After Johan Gottlieb Gahn (1745-1818), Swedish mineralogist.