LepidomelaneLep`i*dom"e*lane\ (l[e^]p`[i^]*d[o^]m"[-e]*l[=a]n), n. [Gr. lepi`s -i`dos, a scale + me`las, me`laina, black.] (Min.) 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.
|a mica that is a biotite containing iron|