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Villiaumite & Ussingite

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SHS104376

Villiaumite & Ussingite

Description Tabs

Description
Locality: 
Umbozero Mine, Alluaiv Mountain, Lovozero, Murmansk Oblast, Russian Federation
Size Range: 
Thumbnail (1-3cm)
Size: 
2.5 × 2.2 × 1.3 cm
Description

Ussingite and villiaumite in matrix

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