Cerite
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Cerite is a complex silicate mineral group containing cerium, formula
₉
₆
₃. The cerium and lanthanum content varies with the Ce rich species and the La rich species. Wikipedia
Crystal class: Ditrigonal pyramidal (3m); (same H-M symbol)
Crystal habit: Massive granular
Crystal system: Trigonal
Mohs scale hardness: 5 to 5.5
Space group: R3c