Thortveitite
Sc₂Si₂O₇
Silicates
Hardness —
· Monoclinic
Photo: David Hospital · CC BY-SA 4.0
K₁₄+x(Ca,Na,Mn,Fe)₄₈[Si₆₀O₁₆₂]F₁₆(Ox,OH₄-x)*₂H₂O
Unclassified silicate
Source: Wikidata
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