English Wikipedia - The Free Encycl...
Download this dictionary
Pegmatite
A
pegmatite
is a
holocrystalline
, intrusive
igneous rock
composed of interlocking
phaneritic
crystals usually larger than 2.5 cm in size (1 inch); such rocks are referred to as
pegmatitic
.
See more at Wikipedia.org...
© This article uses material from
Wikipedia
®
and is licensed under the
GNU Free Documentation License
and under the
Creative Commons Attribution-ShareAlike License