PHILLIPSITE-Ca (Ca,K,Na)1-2(Si,Al)8O16·6H2O (monoclinic) . Crystals penetration twins , also in spherulites . Maricopa Co/Arizona . 鈣十字沸石晶體常呈有名的十字雙晶，或細小球狀．硬度４∼４.5．形成於玄 武岩的晶洞，為沸石類一種．

經典名礦欣賞．２．３
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