apophyllite


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a·poph·yl·lite

 (ə-pŏf′ə-līt′, ăp′ə-fĭl′īt′)
n.
A white, pale pink, or pale green crystalline mineral, essentially KCa4Si8O20(F,OH)·8H2O.

apophyllite

(əˈpɒfɪˌlaɪt; ˌæpəˈfɪlaɪt)
n
(Minerals) a white, colourless, pink, or green mineral consisting of a hydrated silicate of calcium, potassium, and fluorine in tetragonal crystalline form. It occurs in cracks in volcanic rocks. Formula: KCa4(Si4O10)2(OH1F).8H2O
[C19: from French, from apo- + Greek phullon leaf + -ite1; referring to its tendency to exfoliate]

a•poph•yl•lite

(əˈpɒf əˌlaɪt, ˌæp əˈfɪl aɪt)

n.
a hydrous potassium and calcium silicate mineral occurring in transparent crystals.
[1800–10]
References in periodicals archive ?
com/store/crystal) to browse a huge selection of clear quartz, Lemurian seed crystals, amethyst, citrine, smoky quartz, ametrine, tourmaline, phenacite, Indigo quartz, apophyllite, topaz, aquamarine, Himalayan quartz scepters, skeletal quartz, and more.
The most striking result was seen in the growth of lysozyme on the mineral apophyllite.