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Webster 1913 Edition


Leucite

Leu′cite

(lū′sīt)
,
Noun.
[Gr.
λευκόσ
white: cf. F.
leucite
.]
1.
(Min.)
A mineral having a glassy fracture, occurring in translucent trapezohedral crystals. It is a silicate of alumina and potash
KAlSi2O6
. It is found in the volcanic rocks of Italy, especially at Vesuvius.
2.
(Bot.)
A leucoplast.

Webster 1828 Edition


Leucite

LEU'CITE

,
Noun.
[Gr. white.] A stony substance, so called from its whiteness, found among volcanic productions in Italy, in crystals, or in irregular masses; formerly called crystals of white shorl, or white granite or granilite.
Hauy called this mineral, amphigene. It is called by some writers leucolite, and by others, dodecahedral zeolite.