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Kostylevite & Sazykinaite-(Y)

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GMN160828

Kostylevite & Sazykinaite-(Y)

Type Locality

Description Tabs

Description
Locality: 
Koashva Mountain, Khibiny Massif, Murmansk Oblast, Russian Federation
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.8 × 3 × 2 cm
Description

A lot of very nice beige, translucent crystal cluster of kostylevite, with beige, pale brown sazykinaite Y crystals in the cavities.
Very rich 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...

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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