-
intermediate composition and
mafic pegmatites are known. Many of the world's
largest crystals are
found within pegmatites.
These include crystals of microcline...
-
possesses a
hexagonal crystal system.
Aquamarine mainly forms in
granite pegmatites and
hydrothermal veins, and it is a very
lengthy process that can take...
- granites,
pegmatites, and schists, and "books" (large
individual crystals) of mica
several feet
across have been
found in some
pegmatites.
Micas are...
-
deposit types:
Magmatic deposits are ones who
originate directly from
magma Pegmatites are very co**** grained,
igneous rocks. They
crystallize slowly at great...
- is
widely distributed in nature. It is
found most
commonly in
granitic pegmatites, but also
occurs in mica schists, such as
those of the Ural Mountains...
- in
granitic pegmatites, and also in a
variety of
igneous rocks. The
central portions of
pegmatites are
often miarolitic as the
pegmatite **** crystallizes...
- In
southern Greenland, the
Illimaussaq alkaline complex consists of
pegmatites such as nepheline,
syenites (especially
kakortokite or naujaite) and sodalite...
- and
therefore discovered the new
element rubidium. It
occurs in
granite pegmatites, in some high-temperature
quartz veins,
greisens and granites. ****ociated...
-
commonly found in phosphate-rich
pegmatites. It
occurs in the form of
perfect crystals grouped in druses, in
pegmatites, and is
often of precious-stone...
-
samples of
Volyn biota were
found in
samples from
miarolitic pegmatites ("chamber
pegmatites")
collected from the
Korosten Pluton [uk] of the Ukrainian...
