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Mountainite & Manganoneptunite

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SKY636415

Mountainite & Manganoneptunite

Rare Mineral

Description Tabs

Description
Locality: 
Yubileinaya Pegmatite, Karnasurt Mountain, Lovozero Massif, Murmansk Oblast, Russian Federation
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1 × 0.8 × 0.5 cm
Description

Pinkish white acicular crystals of mountainite associated to brown manganneptunite.

Mineral Data
What's on the rock

Mountainite

Formula: 
KNa2Ca2[Si8O19(OH)]·6H2O
Strunz: 
9.GG.10
Hardness: 
3.0
Colour: 
white
Streak: 
white
Type Locality: 
Bultfontein, Lejweleputswa District, Free State Province, South Africa

Manganoneptunite

Formula: 
Na2KLi(Mn2+,Fe2+)2Ti2[Si8O24]
Strunz: 
9.EH.05
Crystal System: 
Monoclinic
Hardness: 
5.0 - 6.0
Colour: 
Red
Type Locality: 
Maly Mannepakhk Mt (Malyi Mannepakhk Mt), Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia...

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