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Arctite Natrolite & Lamprophyllite

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POL812306

Arctite Natrolite & Lamprophyllite

Analysed

Description Tabs

Description
Locality: 
Koashva Open Pit, Koashva Mountain, Khibiny Massif, Murmansk Oblast, Russian Federation
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.1 × 2.2 × 1.5 cm
Description

Very rare (three location only!) colorless Arctite grain on Natrolite with brown Lamprophyllite and very dark green Aegirine. Arctite fluorescence under UV. Analysed!

Mineral Data
What's on the rock

Arctite

Formula: 
Na2Ca4(PO4)3F
Strunz: 
8.BN.10
Crystal System: 
Trigonal
Hardness: 
5.0
Streak: 
Colorless
Type Locality: 
Vuonnemiok River Valley, Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia...

Natrolite

Formula: 
Na2Al2Si3O10·2H2O
Strunz: 
9.GA.05
Hardness: 
5.0 - 5.5
Streak: 
White
Type Locality: 
Hohentwiel, Singen, Hegau, Baden-Württemberg, Germany

Lamprophyllite

Formula: 
(Sr,K,Ba)2(Na,Ti,Mn2+,Fe3+)4Ti2(Si2O7)2O(O,OH,F)
Strunz: 
9.BE.25
Hardness: 
2.5
Colour: 
Yellow
Type Locality: 
Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia...

Seller Information

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