noun
petalite
A lithium aluminum silicate mineral; technical term used in geology and mineralogy.
See also: ペタライト
葉長石はリチウムを含む鉱物の一種です。
Petalite is a type of mineral that contains lithium.
ペタライト is the katakana loanword for petalite, commonly used in scientific contexts alongside the kanji term 葉長石.
The kanji 葉 (leaf) and 長石 (feldspar) suggest a feldspar-like mineral with a leaf-like cleavage; the exact derivation is uncertain.