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Anorthosite (/əˈnɔːrθəsaɪt/) is a phaneritic,
intrusive igneous rock
characterized by its composition:
mostly plagioclase feldspar (90–100%), with a minimal...
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Ferroan anorthosite (FAN) is a
pristine co****-grained
igneous rock
found in the
lunar highlands. FANs have a Ca-rich
plagioclase (called anorthite) composition...
- Rock
formed almost entirely of
calcic plagioclase feldspar is
known as
anorthosite.
Feldspars are also
found in many
types of
sedimentary rocks. The name...
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Notable rock
provinces (metamorphic
igneous rocks, ultramafics, and
anorthosites) are
found on the
southwest coast at Qeqertarsuatsiaat. East of Nuuk...
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rocks in the
lunar highlands compose three distinct groups: the
ferroan anorthosite suite, the
magnesian suite, and the
alkali suite.
Lunar breccias, formed...
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common mafic igneous rocks such as
basalt and gabbro, as well as in
anorthosites. The
geological type area for
labradorite is Paul's
Island near the town...
- Houston, Texas.
Chemical analysis of the
Genesis Rock
indicated it is an
anorthosite,
composed mostly of a type of
plagioclase feldspar known as anorthite...
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Phaneritic rock:
Anorthosite from the
Stillwater Igneous Complex (Neoarchean; Montana)...
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makes up more than 90% of the
feldspar content.
Gabbro is
distinct from
anorthosite,
which contains less than 10%
mafic minerals. Co****-grained gabbroids...
- program. The rock, an 11.7 kg (26 lb)
breccia consisting mainly of
shocked anorthosite attached to a
fragment of
troctolitic "melt rock", is
named after Bill...
