- A
pegmatite is an
igneous rock
showing a very co**** texture, with
large interlocking crystals usually greater in size than 1 cm (0.4 in) and sometimes...
- the
eastern edge by the Blue
Ridge Front. The
pegmatites intruded into the Ashe Formation. The
pegmatites and
country rock are part of the
Spruce Pine...
- The Tin
Mountain pegmatite is an
igneous intrusion located in the
southern Black Hills,
South Dakota. It is a part of the
Harney Peak
Granite dome that...
- granites,
pegmatites, and schists, and "books" (large
individual crystals) of mica
several feet
across have been
found in some
pegmatites.
Micas are...
- minerals; this is
called a
pegmatite. The high
water content of the
magma made it
possible for the
crystals to grow quickly, so
pegmatite crystals are
often quite...
- the Ross Ice Shelf. From the south,
features include Patterson Peak,
Pegmatite Peak,
Feeney Peak,
Feeney Col and
Hidden Col.
Along the Ross Ice Shelf...
-
noted in
beryl dissolution cavities at the
Noumas II
Pegmatite, part of the
Orange River pegmatite belt in the
Northern Cape of
South Africa.
Large crystals...
-
Lepidolite is
found with
other lithium-bearing minerals, such as spodumene, in
pegmatite bodies. It has also been
found in high-temperature
quartz veins, greisens...
-
visited the
point and gave the name
because of the
abundance of the rock
Pegmatite. 84°56′S 166°56′W / 84.933°S 166.933°W / -84.933; -166.933. A Y-shaped...
- The
Harding Pegmatite Mine is a
former adit mine that
extracted lithium, tantalum, and
beryllium from a
Precambrian pegmatite sill. It
ceased operations...
