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Pyroxenite is an
ultramafic igneous rock
consisting essentially of
minerals of the
pyroxene group, such as augite, diopside, hypersthene,
bronzite or enstatite...
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crystals are very brittle. It was
first described in 1965 in the
Afrikanda pyroxenite m****if, a
formation on Russia's Kola
Peninsula and was
named for Nikolai...
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Websterite is
ultramafic igneous rock, a type of
pyroxenite that has less than 5%
olivine and
roughly equal proportions of
orthopyroxene and clinopyroxene...
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layered intrusions, ****ociated with ****ulate
layers of wehrlite,
olivine pyroxenite, harzburgite, and even
chromitite (a ****ulate rock
consisting largely...
- phlogopite. The UG2
chromitites are
underlain by
pyroxenite footwall that is
distinct from
hanging wall
pyroxenite.
Chromite subhedral to
subrounded (less than...
- are also
found in
pentlandite extracted from Sudbury, Ontario, and in
pyroxenite deposits in
South Africa. Ruthenium, a
polyvalent hard
white metal, is...
- the USGS
geological party in the
Pensacola Mountains, 1978-79, from the
pyroxenite rock
which forms a con****uous dark
layer along the
cliffs of the promontory...
- Rao, B; Parthasarathy, R; Kumar, Anil; Gopalan, K (1994). "2.0 Ga old
pyroxenite-carbonatite
complex of Hogenakal,
Tamil Nadu,
South India". Precambrian...
- Foskor's
Mining Division in
Phalaborwa mines phosphate rock (foskorite and
pyroxenite), from
which Foskor's Acid
Division in
Richards Bay
produces phosphoric...
-
matrix Pumice –
Extremely vesicular volcanic rock,
typically light-colored
Pyroxenite –
Igneous rock - a co****
grained plutonic rock
composed of >90% pyroxene...
