from The Century Dictionary.

  • noun A kind of mica related to lepidolite, but containing both lithium and iron: it is often found associated with tin ores, as at Zinnwald in the Erzgebirge.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Min.) A kind of mica containing lithium, often associated with tin ore.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun mineralogy A mineral with monoclinic crystals, KLiFe2+Al(AlSi3)O10(F,OH)2, of the mica group.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun a mica containing iron and lithium


Sorry, no etymologies found.


Help support Wordnik (and make this page ad-free) by adopting the word zinnwaldite.


  • These include the cesium - and potassium-rich zeolites, pollucite and leucite, and the lithium-rich mica, zinnwaldite (a variety of the mineral lepidolite).



Log in or sign up to get involved in the conversation. It's quick and easy.

  • zen in walden

    March 2, 2011