- An
equigranular material is
composed chiefly of
crystals of
similar orders of
magnitude to one another.
Basalt and
gabbro commonly exhibit an equigranular...
- co****-grained gabbro, and may
exhibit acicular crystal habits.
Gabbro is
usually equigranular in texture,
although it may also show
ophitic texture (with
laths of...
-
their crystals are of
roughly equal size,
intrusive rocks are said to be
equigranular.
Plutonic rocks are less
likely than
volcanic rocks to show a pronounced...
- mica, and
amphibole minerals,
which form an interlocking,
somewhat equigranular matrix of
feldspar and
quartz with
scattered darker biotite mica and...
- phosphosiderite, talc and/or
wavellite appearing as
minor components.
Rocks are
equigranular with a
grain size
around 2 – 3 mm. The
black ilmenite is
slightly magnetic...
- and so
hornfels is
usually devoid of
schistosity and
forms a tough,
equigranular rock. If the rock was
originally banded or
foliated (as, for example...
- banding. Additionally, fine-grained, porphyritic, and medium-grained
equigranular phases are included.
Intercalated with the
flows are thin pyroclastic...
-
eastern Wichitas and the
isolated peaks of the
western Wichitas. Some are
equigranular, but most are porphyritic. The
Mount Scott Granite is the most extensively...
-
weathered granite outcrop. They are made of a pink, m****ive, co****ly
equigranular rock
consisting mostly of
quartz and orthoclase.
Their appearance may...
-
State of Rio de Janeiro, Brazil. The rock is holocrystalline,
generally equigranular, equidirectional, and
gross with
grain size of 2 mm to 5 mm. In certain...
