Latrappite
 General Information: Chemical Formula:(Ca,Na)(Nb,Ti,Fe)O3 Environment:Carbonitite rocks. The crystal structure of latrappite, determined by Rietveld analysis, is similar to that of CaTiO3 perovskite. IMA Status:Approved IMA 1964 Locality:Oka, Kaiserstuhl and Magnet Cove carbonatite complexes. Physical Properties: Cleavage:None Color:black. Density:4.4 Diaphaniety:Opaque Hardness:5.5 - Knife Blade Luster:Metallic Streak:gray More details...
(Ca,Na)(Nb,Ti,Fe)O3
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