GY 302 Crystallography and Mineralogy Supplementary Lecture Notes 13 Halides Data below from the USGS Mineral Commodity Summary for 2008 Mineral Formula System Halite NaCl Isometric Fluorite CaF2 Isometric Sylvite KCl Isometric Cryolite Na3AlF6 Monoclinic Carnallite KMgCl3·2H2O
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