06/05/2022
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Charoite
Formula (K,Sr)15-16(Ca,Na)32[Si6O11(O,OH)6]2[Si12O18(O,OH)12]2[Si17O25(O,OH)18]2(OH,F)4 · ~3H2O
Colour: Violet to deep lilac
Lustre: Vitreous, Silky
Hardness: 5 - 6
Specific Gravity: 2.54
Crystal System: Monoclinic
Name: For the type locality, near the Chara River.
Type Locality: Murunskii Massif, Chara and Tokko Rivers Confluence, Aldan Shield, Russia
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02/12/2021