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Lemmleinite-K Sitinakite & Sazykinaite-(Y)

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CSL507052

Lemmleinite-K Sitinakite & Sazykinaite-(Y)

Type Locality

Description Tabs

Description
Locality: 
Koashva Mountain, Khibiny Massif, Murmansk Oblast, Russian Federation
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.2 × 1.5 × 1.5 cm
Description

Lemmleinite-K is a very rare, potassium- titano-silicate mineral of labuntsovite group. It forms colourless crystals on fibrous aegirine matrix in association with cubic crystals of rare K-Na-Ti silicate mineral sitinakite, platy, creme coloured catapleiite and larger rhombohedral sazykinaite-(Y). Koashva is the Type Locality for lemmleinite-K and sazykinaite-(Y).

Mineral Data
What's on the rock

Lemmleinite-K

Formula: 
K2(Ti,Nb)2(Si4O12)(OH,O)2·4H2O
Strunz: 
9.CE.30d
Crystal System: 
Orthorhombic
Hardness: 
5.0
Streak: 
White
Type Locality: 
Koashva quarry, Koashva Mt, Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia...

Sitinakite

Formula: 
KNa2Ti4(SiO4)2O5(OH)·4H2O
Strunz: 
9.AG.30
Crystal System: 
Tetragonal
Hardness: 
4.5
Type Locality: 
Yukspor 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...
Loranth Minerals

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