Definition of mirabilite in English:

mirabilite

Pronunciation /mɪˈrabəlʌɪt/

noun

Mineralogy
  • Native hydrated sodium sulphate, Na ₂ SO ₄ ·10H ₂ O, a monoclinic mineral usually occurring as colourless prisms or massive deposits, especially near salt springs or lakes, and in caves. Also called Glauber's salt.

Origin

Mid 19th century; earliest use found in James Dana (1813–1895), geologist, zoologist, and teacher. From German Mirabilit from classical Latin mīrābilis + German -it.