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Naujakasite & Villiaumite

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SMM969754

Naujakasite & Villiaumite

Description Tabs

Description
Locality: 
Kvanefjeld, Ilímaussaq, Narsaq, Kujalleq, Greenland
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.7 × 1.7 × 1.3 cm
Description

Good sample of this rare mineral found only in Greenland. Rhomboid crystals with pearly highlights on and in the matrix with red crystals of villiaumite. 

Boxed with Label
Mineral Data
What's on the rock

Naujakasite

Formula: 
(Na,K)6(Fe2+,Mn2+,Ca)(Al,Fe)4Si8O26
Strunz: 
9.EG.10
Hardness: 
2.0 - 3.0
Type Locality: 
Naujakasik (Naajakasik), Tunulliarfik Fjord (Tunugdliarfik), Ilímaussaq complex, Narsaq, Kujalleq, Greenland

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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