- tetrahedra.
Pyroxenes that
crystallize in the
monoclinic system are
known as
clinopyroxenes and
those that
crystallize in the
orthorhombic system are
known as orthopyroxenes...
- or nepheline), plagioclase, and
lesser alkali feldspar.
Pyroxenes (
clinopyroxenes) are
common accessory minerals.
Quartz and
olivine are absent. The absence...
-
Clinopyroxene thermobarometry is a
scientific method that uses the
mineral clinopyroxene to
determine the
temperature and
pressure of the
magma when the...
- an iron-bearing hypersthene. The prin****l
pyroxenes in
gabbro are
clinopyroxenes,
generally iron-rich augites.
Norite occurs with
gabbro and
other mafic...
-
mantle from the
precipitation and
sinking of the
minerals olivine,
clinopyroxene, and orthopyroxene;
after about three-quarters of the
magma ocean had...
-
Omphacite is a
member of the
clinopyroxene group of
silicate minerals with formula: (Ca, Na)(Mg, Fe2+, Al)Si2O6. It is a
variably deep to pale
green or...
-
amphibole and amphibole-liquid,
garnet and
biotite equilibrium. The
mineral clinopyroxene is used for
temperature and
pressure calculations of the
magma that...
-
equal amounts of
clinopyroxene and orthopyroxene) or
olivine gabbro (for a
gabbro containing significant olivine, but
almost no
clinopyroxene or hornblende)...
-
clinopyroxenes (with a
monoclinic crystal structure). This
distinction is
important in the
classification of
pyroxene peridotites since clinopyroxene...
- or
aphanitic igneous rock made up
almost entirely of
nepheline and
clinopyroxene (variety augite). If
olivine is present, the rock may be classified...
