First Known Use: 1810
Dictionary
apophyllite
noun apo·phyl·lite \ˌa-pə-ˈfi-ˌlīt, ə-ˈpä-fə-ˌlīt\
Definition of APOPHYLLITE
: a mineral composed of a hydrous silicate of potassium, calcium, and fluorine that is related to the zeolites and is usually found in transparent square prisms or white or grayish masses
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Origin of APOPHYLLITE
French, from apo- + Greek phyllon leaf — more at blade
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