noun
apophyllite
A mineral name used in geology and mineralogy. Also known as 魚眼石 (gyoganseki) in Japanese.
See also: 魚眼石
この標本はアポフィライトの結晶です。
This specimen is a crystal of apophyllite.
Japanese kanji name for the same mineral; less common than the katakana form アポフィライト.
From English 'apophyllite', a mineral name coined in the early 19th century from Greek components meaning 'to leaf apart', referring to its tendency to exfoliate when heated.