Thortveitite
Sc₂Si₂O₇
Silicates
Hardness —
· Monoclinic
Photo: Dave Dyet http://www.shutterstone.com http://www.dyet.com · Public domain
Ca₆Si₆O₁₇(OH)₂
Inosilicate mineral
Named after Tetela de Xonotla
Source: Wikidata
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