GEOLOGY & PLANETARY SCIENCE A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z                    HOME ABOUT CATEGORIES SITE MAP COPYRIGHT ADVERTISE CONTACT entire Web this site cassiterite Cassiterite. Image source: Mineralogical Information Institute A mineral consisting of stannic oxide (SnO2) with iron impurity; the chief ore of tin. Cassiterite is usually translucent brown to black, with submetallic luster; it forms short tetragonal prismatic crystals, but is usually massive granular. It occurs in placer deposits, chiefly in the Malay Peninsula, and in pegmatities and other intrusive, igneous rocks. Hardness 6–7, specific gravity 6.8–7.1. Related category    • GEOLOGY AND PLANETARY SCIENCE Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) BACK TO TOP