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Kostylevite Andrianovite & Sazykinaite-(Y)

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GMN687393

Kostylevite Andrianovite & Sazykinaite-(Y)

Description Tabs

Description
Locality: 
Koashva Open Pit, Koashva Mountain, Khibiny Massif, Murmansk Oblast, Russian Federation
Class: 
Crystal Group/Cluster
Size Range: 
Thumbnail (1-3cm)
Size: 
1.5 × 1 × 1.5 cm
Description

Beige elongated crystals, and sprays of kostylevite with grainy and powdery andrianovite crystals with one sazykinaite rhomb.

Really nice specimen!

Mineral Data
What's on the rock

Kostylevite

Formula: 
K2Zr(Si3O9)·H2O
Strunz: 
9.CJ.35
Hardness: 
5.0
Type Locality: 
Vuonnemiok River Valley, Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia...

Andrianovite

Formula: 
Na12(K,Sr,Ce)3Ca6Mn3Zr3Nb(Si25O73)(O,H2O,OH)5
Strunz: 
9.CO.10
Hardness: 
0.0
Type Locality: 
Koashva quarry, Koashva Mt, Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia...

Sazykinaite-(Y)

Formula: 
Na5YZr[SiO3]6·6H2O
Strunz: 
9.DM.10
Hardness: 
5.0
Streak: 
White
Type Locality: 
Koashva quarry, Koashva Mt, Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia...

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