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Shafranovskite & Villiaumite

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SKY642311

Shafranovskite & Villiaumite

Type Locality

Description Tabs

Description
Locality: 
Rasvumchorr Mountain, Khibiny Massif, Murmansk Oblast, Russian Federation
Class: 
Crystals on Matrix
Size Range: 
Micromount (under 1cm)
Size: 
0.8 × 0.6 × 0.5 cm
Description

Yellow crystals of the rare mineral shafranovskite associated to pink cubic villiaumite from the type locality for shafranovskite.

 

Mineral Data
What's on the rock

Shafranovskite

Formula: 
(Na,K)6(Mn,Fe)3Si9O24·6H2O
Strunz: 
9.EE.65
Hardness: 
2.0 - 3.0
Type Locality: 
Yubileinaya pegmatite (Yubileinoye; Jubilejnaja), Karnasurt Mt, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia...

Villiaumite

Formula: 
NaF
Strunz: 
3.AA.20
Crystal System: 
Isometric
Hardness: 
2.0 - 2.5
Streak: 
White
Type Locality: 
Rouma Island (Roume Island; Roma Island; Ruma Island), Los Archipelago (Los Islands), Guinea

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