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Tokkoite

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SKY581570

Tokkoite

Type Locality

Description Tabs

Description
Locality: 
Murunskii Massif, Aldan Shield, Sakha Republic, Russian Federation
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 0.7 × 0.5 cm
Description

Pale brown fibrous crystals of the very rare mineral tokkoite from the only known locality worldwide.

Mineral Data
What's on the rock

Tokkoite

Formula: 
K2Ca4Si7O17(O,OH,F)4
Strunz: 
9.DG.75
Hardness: 
4.0 - 5.0
Type Locality: 
Magistral'nyi area, Sirenevyi Kamen' Deposit, Murunskii Massif, Chara and Tokko Rivers Confluence, Aldan Shield, Sakha Republic (Saha Republic; Yakutia), Eastern-Siberian Region, Russia...

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