Thortveitite
Sc₂Si₂O₇
Silicates
Hardness —
· Monoclinic
Na₂(Ba,K)₆Fe²⁺Ce₂Ti₃(Si₃O₉)₃(HSiO₄)₃(OH,H₂O)₉
Cyclosilicate mineral
Named after cerium
Source: Wikidata
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