Meaning of psilomelane

psi•lom•e•lane

Pronunciation: (sī-lom'u-lān"), [key]
— n.
  1. a common mineral consisting of a mixture of pyrolusite and other oxides of manganese, usually found in black, rounded masses: an ore of manganese.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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