Here you will find one or more explanations in English for the word Porphyritic.
Also in the bottom left of the page several parts of wikipedia pages related to the word Porphyritic and, of course, Porphyritic synonyms and on the right images related to the word Porphyritic.
Porphyritic
Porphyritic Por`phy*rit"ic, a. [Cf. F. porphyritique.] (Min.)
Relating to, or resembling, porphyry, that is, characterized
by the presence of distinct crystals, as of feldspar, quartz,
or augite, in a relatively fine-grained base, often aphanitic
or cryptocrystalline.
Meaning of Porphyritic from wikipedia
-
intrusive rocks can be
porphyritic,
meaning all
types of
igneous rocks can
display some
degree of
porphyritic texture. Most
porphyritic rocks have bimodal...
- groundm****, in
which case the
texture is
known as
porphyritic. A
granitic rock with a
porphyritic texture is
known as a
granite porphyry.
Granitoid is...
-
generally gl****y or fine-grained (aphanitic) in texture, but may be
porphyritic,
containing larger mineral crystals (phenocrysts) in an
otherwise fine-grained...
-
vitrophyre is a
porphyritic volcanic rock in
which phenocrysts are
embedded in a gl****y matrix.
Vitrophyres are
contrasted from
typical porphyritic rocks in...
- name was
given to any
igneous rocks with
large crystals. The
adjective porphyritic now
refers to a
certain texture of
igneous rock
regardless of its chemical...
-
Granite Co****-grained and
porphyritic Porphyritic granite Fine-grained (aphanitic)
Rhyolite Fine-grained and
porphyritic Porphyritic rhyolite Pyroclastic Rhyolitic...
- and low in
alkali metal oxides. It has a fine-grained (aphanitic) to
porphyritic texture and is
intermediate in
composition between andesite and rhyolite...
- in the size of the
crystals are
called porphyries, and the
adjective porphyritic is used to
describe them.
Phenocrysts often have
euhedral forms, either...
- The
Rollstone Boulder is a ten-foot-tall, 110-ton
porphyritic granite glacial erratic located on a
traffic island in
downtown Fitchburg, M****achusetts...
- the
basis of the
dominant mineral, i.e.
porphyritic olivine (PO),
porphyritic pyroxene (PP), and
porphyritic olivine-pyroxene (POP). It
seems likely that...
