ungemachite

ungemachite

[′əŋ·gə‚mä‚kīt]
(mineralogy)
K3Na9Fe(SO4)6(OH)3·9H2O A colorless to pale yellow, hexagonal mineral consisting of a hydrated basic sulfate of potassium, sodium, and iron; occurs in tabular form.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.