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HARMOTOME (Ba0.5,Ca0.5,K,Na)5Al5Si11O32·12H2O (monoclinic) . zeolite group . translucent white blocky crystals . Strontian, Argyllshire, Highland, Scotland . 交沸石常見兩雙晶交叉如十字，硬度４鎅，白色半透明玻璃光澤，形成於玄武岩的 晶洞．
經典名礦欣賞 ．２．３ NO.312
