Definify.com

Webster 1913 Edition


Apophyllite

A-poph′yl-lite

,
Noun.
[Pref.
apo-
+ Gr. [GREEK] leaf; so called from its foliated structure or easy cleavage.]
(Min.)
A mineral relating to the zeolites, usually occurring in square prisms or octahedrons with pearly luster on the cleavage surface. It is a hydrous silicate of calcium and potassium.

Webster 1828 Edition


Apophyllite

APOPH'YLLITE

,
Noun.
[Gr. from, and a leaf; so called because of its tendency to exfoliate.]
A mineral occurring in laminated masses or in regular prismatic crystals, having a strong and peculiar pearly luster. Its structure is foliated, and when a fragment is forcibly rubbed against a hard body, it separates into thin lamens, like selenite. It exfoliates also before the flame of a lamp. From its peculiar luster, it is sometimes called by the harsh name, ichthyophthalmite, fish-eye stone.

Definition 2024


apophyllite

apophyllite

English

Noun

apophyllite (plural apophyllites)

  1. (mineralogy) Any of several forms of a pale pink or green mineral being a mixed fluoride and silicate of potassium and calcium.

Derived terms

Translations