- and
those that
crystallize in the
orthorhombic system are
known as
orthopyroxenes. The name
pyroxene is
derived from the
Ancient Gr****
words for 'fire'...
-
amounts of hornblende, olivine,
orthopyroxene and
accessory minerals. With
significant (>10%)
olivine or
orthopyroxene it is
classified as
olivine gabbro...
-
peridotites since clinopyroxene melts more
easily than
orthopyroxene or olivine. The most
common orthopyroxene is enstatite, Mg2Si2O6, in
which iron substitutes...
- pyroxene-hornblende
facies is
orthopyroxene. The
granulite facies is
characterized by the
following mineral ****emblages: In metabasites:
orthopyroxene + clinopyroxene...
-
precipitation and
sinking of the
minerals olivine, clinopyroxene, and
orthopyroxene;
after about three-quarters of the
magma ocean had crystallized, lower-density...
- hypersthene,
although this name has been
formally abandoned and
replaced by
orthopyroxene. When
determined petrographically or
chemically the
composition is given...
- amphiboles. Both
clinopyroxene and
orthopyroxene may be present, and in fact, the
coexistence of clino- and
orthopyroxene in a
metabasite (metamorphed basalt)...
- quartz,
antiperthite (or perthite),
orthopyroxene (usually hypersthene) and magnetite, and is
equivalent to an
orthopyroxene bearing tonalite. It is
named for...
-
Charnockite (/ˈtʃɑːrnəkaɪt/) is any
orthopyroxene-bearing quartz-feldspar rock
formed at high
temperature and pressure,
commonly found in
granulite facies’...
-
extensive use of basalt. In
tholeiitic basalt,
pyroxene (augite and
orthopyroxene or pigeonite) and calcium-rich
plagioclase are
common phenocryst minerals...
