EPISTILBITE (Ca,Na2)Al2Si4O12·4H2O (monoclinic)．
zeolite group．Jalgaon, Maharashtra, India．柱沸石英文含意為形成於束沸石－STILBITE之上，結晶不若束沸石豐富和常見．可謂少見的沸石類．晶體常見板狀，柱狀，纖維放射狀．雙晶常穿插成十字狀，透明至半透明．玻璃光澤．色彩無，白，粉紅，暗紅．．等．硬度４．形成於火成岩的晶洞與 calcite, yugawaralite, heulandite, stilbite等沸石類為伍．

經典名礦欣賞．２．３．４．５

NO.638