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LepidomelaneLepidomelane 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. lepidomelaneMica Mi"ca, n. [L. mica crumb, grain, particle; cf. F. mica.]
(Min.)
The name of a group of minerals characterized by highly
perfect cleavage, so that they readily separate into very
thin leaves, more or less elastic. They differ widely in
composition, and vary in color from pale brown or yellow to
green or black. The transparent forms are used in lanterns,
the doors of stoves, etc., being popularly called
isinglass. Formerly called also cat-silver, and
glimmer.
Note: The important species of the mica group are:
muscovite, common or potash mica, pale brown or
green, often silvery, including damourite (also
called hydromica); biotite, iron-magnesia mica,
dark brown, green, or black; lepidomelane, iron,
mica, black; phlogopite, magnesia mica, colorless,
yellow, brown; lepidolite, lithia mica, rose-red,
lilac. Mica (usually muscovite, also biotite) is an
essential constituent of granite, gneiss, and mica
slate; biotite is common in many eruptive rocks;
phlogopite in crystalline limestone and serpentine.
Mica diorite (Min.), an eruptive rock allied to diorite but
containing mica (biotite) instead of hornblende.
Mica powder, a kind of dynamite containing fine scales of
mica.
Mica schist, Mica slate (Geol.), a schistose rock,
consisting of mica and quartz with, usually, some
feldspar. Psilomelane
Psilomelane Psi*lom"e*lane, n. [Gr. ? bare + ?, ?, black.]
(Min.)
A hydrous oxide of manganese, occurring in smooth, botryoidal
forms, and massive, and having an iron-black or steel-gray
color.
Pyromelana orix 2. (Zo["o]l.) Any marine fish of the genus Macrurus, in
which the body and tail taper to a point; they mostly
inhabit the deep sea; -- called also onion fish, and
rat-tail fish.
3. (Zo["o]l.) A bright-colored South African grosbeak
(Pyromelana orix), having the back red and the lower
parts black. Stilpnomelane
Stilpnomelane Stilp*nom"e*lane, n. [Gr. stilpno`s shining +
me`las, -anos, black.] (Min.)
A black or greenish black mineral occurring in foliated
flates, also in velvety bronze-colored incrustations. It is a
hydrous silicate of iron and alumina.
Xanthomelanous
Xanthomelanous Xan`tho*mel"a*nous, a. [Pref. xantho- + Gr. ?,
?, black.] (Ethnol.)
Of or pertaining to the lighter division of the Melanochroi,
or those races having an olive or yellow complexion and black
hair.
Zoomelanin
Zoomelanin o`["o]*mel"a*nin, n. [Zo["o]- + melanin.]
(Physiol. Chem.)
A pigment giving the black color to the feathers of many
birds.
Meaning of Omelan from wikipedia
