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Webster 1913 Edition

Pegmatite

Peg′ma-tite

,
Noun.
[From Gr. [GREEK] something fastened together, in allusion to the quartz and feldspar in graphic granite: cf. F.
pegmatite
. See
Pegm
.]
(Min.)
(a)
Graphic granite. See under
Granite
.
(b)
More generally, a coarse granite occurring as vein material in other rocks.

Webster 1828 Edition

Pegmatite

PEG'MATITE

,
Noun.
Primitive granitic rock, composed essentially of lamellar feldspar and quartz; frequently with a mixture of mica. In it are found kaolin, tin tourmaline, beryl, aqua marina, tantale, scheelin and other valuable minerals.

Definition 2024

Pegmatite

Pegmatite

See also: pegmatite

German

Noun

Pegmatite m

  1. plural of Pegmatit

pegmatite

pegmatite

See also: Pegmatite

English

Noun

pegmatite ‎(plural pegmatites)

  1. A coarsely crystalline igneous or plutonic rock composed primarily of feldspar and quartz, normally with muscovite and/or biotite mica.

Derived terms

See also

Italian

Noun

pegmatite f ‎(plural pegmatiti)

  1. (geology) pegmatite

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