Lepidomelane
Pronunciation : Lep`i*dom"e*lane
Part of Speech : n.
Etymology : [Fr. (Min.)
Definition : Defn: An iron-potash mica, of a raven-black color, usually found in granitic rocks in small six-sided tables, or as an aggregation of minute opaque scales. See Mica.
Source : Webster's Unabridged Dictionary, 1913