BREWSTERITE-Sr Sr2Al4Si12O32-10H2O (monoclinic) . zeolite group . Strontian, Argyll, Highland, Scotland . BREWSTERITE為罕見而不起眼的礦，一般礦物書還懶得介紹， 白色透明短柱狀，硬度５，常與方解石共生於玄武岩的間隙．
礦名來源：Named after David Brewster (1781-1868), Scottish physicist, who studied the optical properties of minerals.

經典名礦欣賞．２
NO.155