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Websterite is
ultramafic igneous rock that
consists of
roughly equal proportions of
orthopyroxene and clinopyroxene. It is a type of pyroxenite. Websterite...
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Pyroxenites are
classified into clinopyroxenites, orthopyroxenites, and the
websterites which contain both
types of
pyroxenes (see
diagram below).
Closely allied...
- plagioclase-group
feldspar is
oligoclase Tuff – Rock
consolidated from
volcanic ash
Websterite –
Ultramafic and
ultrabasic rock – A type of pyroxenite,
composed of clinoproxene...
- harzburgite)
garnet inclusions have less CaO.
Eclogite and
peridotite are the two main
parental mantle rocks and
wehrlite and
websterite are
minor types....
- for its
aluminium content. It is also
known as
alley stone,
halite and
websterite (named
after Orcadian geologist Thomas Webster).
Aluminite is used by...
- Uraninite: Joachimsthal, Austria-Hungary (now Jáchymov,
Czech Republic)
Websterite:
Webster in
North Carolina. Widgiemoolthalite: Widgiemooltha, Western...
-
melilite and
nepheline basalts, basanites, melilite,
nephelinite and
websterite, and form an alkaline-nephelinite suite. The
variations in composition...
- 1882–1948
mathematician Thomas Webster 1773–1844
geologist geologist who had
websterite, now
normally called aluminite,
named after him
Alexander Wilson 1714–1786...
- Ultramafic-Mafic sequences' contact, and in the
uppermost pyroxenite (bronzitite and
websterite)
units are
economic concentrations of nickel, copper, cobalt, gold, and...
-
Stikinia terrane. They
consist of lherzolite, harzburgite, wehrlite, dunite,
websterite and
garnet composed pyroxenite. The
highest and
lowest temperatures recorded...
