鐵黑雲母
Lepidomelane \Lep`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}.
lepidomelane
n : a mica that is a biotite containing iron