- insulator, so the
magma cools slowly, and
intrusive rocks are co****-grained (
phaneritic). The
mineral grains in such
rocks can
generally be
identified with the...
- are
phaneritic, aphanitic, porphyritic, gl****y, pyroclastic, and pegmatitic.
Aphanitic (a = not,
phaner = visible) rocks, in
contrast to
phaneritic rocks...
-
known of
highly sheared granites which can be
mistaken for rhyolites. For
phaneritic felsic rocks, the QAPF
diagram should be used, and a name
given according...
-
crystals in an
aphanitic rock are too fine-grained to be identifiable.
Phaneritic texture forms when
magma deep
underground in the
plutonic environment...
- (/ˌɡrænoʊˈdaɪ.əraɪt, ˌɡrænəˈ-/ GRAN-oh-DY-ə-ryte, GRAN-ə-) is a co****-grained (
phaneritic)
intrusive igneous rock
similar to granite, but
containing more plagioclase...
-
Granite (/ˈɡrænɪt/ GRAN-it) is a co****-grained (
phaneritic)
intrusive igneous rock
composed mostly of quartz,
alkali feldspar, and plagioclase. It forms...
-
Gabbro (/ˈɡæbroʊ/ GAB-roh) is a
phaneritic (co****-grained and magnesium- and iron-rich),
mafic intrusive igneous rock
formed from the slow
cooling magma...
-
Syenite Igneous rock
Composition classification Felsic Plagioclase and K-Feldspars,
depleted in
quartz Texture Phaneritic Equivalents Trachyte extrusively...
-
magma is
extremely slow, and
intrusive igneous rock is co****-grained (
phaneritic).
Intrusive igneous rocks are
classified separately from
extrusive igneous...
-
magma is
extremely slow, and
intrusive igneous rock is co****-grained (
phaneritic). However, the rate of
cooling is
greatest for
intrusions at relatively...
