Cancrinites

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haüyne A feldspathoid and member of the sodalite group of minerals, formula (Na,Ca)4–8(Al6Si6O24)(SO4,S)1–2; sp. gr. 2.5; hardness 5.5; greyish-white; granular; occurs as a constituent of alkali volcanic rocks, often with pyrite.

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vishnevite See CANCRINITE.