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Villiaumite & Ussingite

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ESM563399

Villiaumite & Ussingite

Rare Mineral

Description Tabs

Description
Locality: 
Alluaiv Mountain, Lovozero Massif, Murmansk Oblast, Russian Federation
Class: 
Combination
Size Range: 
Thumbnail (1-3cm)
Size: 
1.2 × 2.1 × 2 cm
Description

Deep red villiaumite on pale rose colored ussingite

Mineral Data
What's on the rock

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

Ussingite

Formula: 
Na2AlSi3O8OH
Strunz: 
9.EH.20
Crystal System: 
Triclinic
Hardness: 
6.0 - 7.0
Streak: 
white
Type Locality: 
Kangerluarsuk Fjord (Kangerdluarssuq Fjord), Ilímaussaq complex, Narsaq, Kujalleq, Greenland