baryte

 
Pronunciation: /ˈbarʌɪt, ˈbɛː-/
(also barytes /bəˈrʌɪtiːz/, barite)

noun

  • a mineral consisting of barium sulphate, typically occurring as colourless prismatic crystals or thin white flakes.

Origin:

late 18th century (as barytes): from Greek barus 'heavy' + endings based on Greek -ites