PHILLIPSITE-Ca (Ca,K,Na)1-2(Si,Al)8O16·6H2O (monoclinic) . Small rodlike,prismatic crystals . Washington,USA. 本礦晶体細小柱狀，透明玻璃光澤，硬度 4~4.5，成長於玄武岩的晶洞中． 貫穿雙晶常見．為沸石類一種．
礦名來源：Named after William Phillips (1775-1829), English mineralogist and founder of the Geological Society of London.

經典名礦欣賞 ．２．３．４．５．６．７
NO.258