Cahnite is associated with these other minerals&colon; willemite, rhodonite, pyrochroite, hedyphane, datolite, and baryte. "Botryolite" is a botryoidal form of datolite. Datolite crystallizes in the monoclinic system forming prismatic crystals and nodular masses. Datolite is a calcium boron hydroxide nesosilicate, CaBSiO(OH). In 1806 he named datolite, from the Greek word meaning "to divide".