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Vuonnemite & Sérandite

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SHS71580

Vuonnemite & Sérandite

Description Tabs

Description
Locality: 
Shkatulka Pegmatite, Umbozero Mine, Alluaiv Mountain, Lovozero Massif, Murmansk Oblast, Russian Federation
Size Range: 
Thumbnail (1-3cm)
Size: 
2.4 × 2.7 × 1.6 cm
Description

Vuonnemite and serandite in matrix

Mineral Data
What's on the rock

Vuonnemite

Formula: 
Na11Ti4+Nb2(Si2O7)2(PO4)2O3(F,OH)
Strunz: 
9.BE.35
Crystal System: 
Triclinic
Hardness: 
2.0 - 3.0
Type Locality: 
Vuonnemiok River Valley, Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia...

Sérandite

Formula: 
Na(Mn2+,Ca)2(HSi3O9)
Strunz: 
9.DG.05
Hardness: 
5.0 - 5.5
Streak: 
White
Type Locality: 
Rouma Island (Roume Island; Roma Island; Ruma Island), Los Archipelago (Los Islands), Guinea