What is a Pegmatite? A pegmatite is
simply a very coarse grained igneous rock that usually occurs in
dikes (seams of rock that cut across the main country rock) or
lenses (pods of coarse-grained igneous rock included in other
rocks). Pegmatites can be from a few inches to hundreds of
feet thick. What makes many people interested in
pegmatites is the fact that many exotic and important minerals,
including many gemstones, are found in them.
Physics, Meteorology and Mathematics
Any questions or comments? Please send them to
jim@pegmatite.com