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Tounkite

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HEF694940

Tounkite

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Description
Locality: 
Malo-Bystrinskoe, Malaya Bystraya River Valley, Lake Baikal, Irkutsk Oblast, Russian Federation
Class: 
Massive/Crystalline
Size Range: 
Thumbnail (1-3cm)
Size: 
1.4 × 0.9 × 0.5 cm
Description

Yellow greygreen tounkite on matrix

Mineral Data
What's on the rock

Tounkite

Formula: 
(Na,Ca,K)8(Al6Si6O24)(SO4)2Cl·H2O
Strunz: 
9.FB.05
Crystal System: 
Hexagonal
Hardness: 
5.0 - 5.5
Streak: 
White
Type Locality: 
Malo-Bystrinskoe lazurite deposit, Malaya Bystraya River Valley, Slyudyanka (Sludyanka), Lake Baikal area, Irkutskaya Oblast', Prebaikalia (Pribaikal'e), Eastern-Siberian Region, Russia...

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