-
Norite is a
mafic intrusive igneous rock
composed largely of the calcium-rich
plagioclase labradorite, orthopyroxene, and olivine. The name
norite is derived...
- with a
metallic luster. The
mineral occurs with
mafic igneous rocks like
norites, and may form from
pyrite during metamorphic processes.
Pyrrhotite is ****ociated...
- are also
intermediate varieties corresponding mineralogically to
norites, quartz-
norites and diorites. A
special feature,
recurring in many
members of the...
- anthophyllite.
Cordierite also
occurs in some granites, pegmatites, and
norites in
gabbroic magmas.
Alteration products include mica, chlorite, and talc...
-
orthopyroxene gabbro,
while a rock
similar to
norite but
containing more
clinopyroxene is
called a
clinopyroxene norite.
Gabbros are also
sometimes classified...
- forming,
different types of
magmas that
would give rise to the Mg-suite
norites and
troctolites began to form,
although the
exact depths at
which this...
-
impact melt
sheet composed from the base up of sub
layer norite,
mafic norite,
felsic norite,
quartz gabbro, and granophyre.[citation needed] The Whitewater...
- soon
after they were intruded. The
norites were
metamorphosed twice more at ~2.7 Ga and ~2.5 Ga. A wide
variety of
norite types are
found within the belt...
-
examples of
these formations include serpentines of
Barberton Mountains,
norites of Sekhukhuneland,
quartzites of
Blyde River Canyon, and the dolomites...
-
consists of
alkali anorthosites with
relatively sodic plagioclase (An70–85),
norites (plagioclase-orthopyroxene), and
gabbronorites (plagioclase-clinopyroxene-orthopyroxene)...
