apophyllite
[ uh-pof-uh-lahyt, ap-uh-fil-ahyt ]
/ əˈpɒf əˌlaɪt, ˌæp əˈfɪl aɪt /
noun
a hydrous potassium and calcium silicate mineral occurring in white crystals.
Words nearby apophyllite
apophasis,
apophis,
apophony,
apophthegm,
apophyge,
apophyllite,
apophysis,
apophysitis,
apoplast,
apoplectic,
apoplectiform
Example sentences from the Web for apophyllite
Apophyllite, a species of mineral of a foliated structure and pearly lustre, called also fish-eye stone.
Apophyllite always occurs as distinct crystals, which belong to the tetragonal system.
British Dictionary definitions for apophyllite
apophyllite
/ (əˈpɒfɪˌlaɪt, ˌæpəˈfɪlaɪt) /
noun
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: KCa 4 (Si 4 O 10) 2 (OH 1 F).8H 2 O
Word Origin for apophyllite
C19: from French, from
apo- + Greek
phullon leaf +
-ite
1; referring to its tendency to exfoliate