Here you will find one or more explanations in English for the word Pyroxenes.
Also in the bottom left of the page several parts of wikipedia pages related to the word Pyroxenes and, of course, Pyroxenes synonyms and on the right images related to the word Pyroxenes.
Pyroxene
Pyroxene Pyr"ox*ene, n. [F. pyrox[`e]ne, from Gr. ? fire + ? a
stranger; -- so called because it was supposed to the be a
stranger, or of rare occurrence, in igneous rocks,] (Min.)
A common mineral occurring in monoclinic crystals, with a
prismatic angle of nearly 90[deg], and also in massive forms
which are often laminated. It varies in color from white to
dark green and black, and includes many varieties differing
in color and composition, as diopside, malacolite, salite,
coccolite, augite, etc. They are all silicates of lime and
magnesia with sometimes alumina and iron. Pyroxene is an
essential constituent of many rocks, especially basic igneous
rocks, as basalt, gabbro, etc.
Note: The pyroxene group contains pyroxene proper, also the
related orthorhombic species, enstatite, bronzite,
hypersthene, and various monoclinic and triclinic
species, as rhodonite, etc.
Meaning of Pyroxenes from wikipedia
-
pyroxenes (commonly
abbreviated Px) are a
group of
important rock-forming
inosilicate minerals found in many
igneous and
metamorphic rocks.
Pyroxenes...
-
Ultramafic rock in
which the
fraction of
pyroxenes exceeds 60% are
classified as
pyroxenites rather than peridotites.
Pyroxenes are
typically dark in color. Hornblende...
- and
general characteristics they are
similar to the
pyroxenes. The
chief differences from
pyroxenes are that (i)
amphiboles contain essential hydroxyl...
- double-chain
silicates and the
pyroxenes are single-chain silicates, the
angle between their cleavage planes is different. The
pyroxenes cleave in two directions...
-
rhombohedral and
basal parting in corundum, and the
basal parting in
pyroxenes.
Cleavage is a
physical property traditionally used in
mineral identification...
- dark in color, and
common rock-forming
mafic minerals include olivine,
pyroxene, amphibole, and biotite.
Common mafic rocks include basalt,
diabase and...
-
third SiO4−4
tetrahedron in the
linked chain (as
opposed to two in the
pyroxenes).
Estimated world production of
crude wollastonite ore was 1,200,000 tonnes...
-
feldspathoids (leucite or nepheline), plagioclase, and
lesser alkali feldspar.
Pyroxenes (clinopyroxenes) are
common accessory minerals.
Quartz and
olivine are...
-
pigeonite and orthopyroxene: when
occurring with
either of
these other pyroxenes, the
calcium content of
augite is a
function of
temperature and pressure...
- clinopyroxenites, orthopyroxenites, and the
websterites which contain both
types of
pyroxenes (see
diagram below).
Closely allied to this
group are the hornblendites...
