Şengil, İsmail Ayhan
(PERGAMON-ELSEVIER SCIENCE LTD, 1995)
Alunite, K2SO4 . Al-2(SO4)(3) . Al-4(OH)(3) is a mineral not soluble in water in its original form. It was formed by hydrothermal alteration of tuff. Therefore it contains approximately 50% SiO2. When heated to 700 degrees ...