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Naujakasite & Villiaumite

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HCH608334

Naujakasite & Villiaumite

Description Tabs

Description
Locality: 
Ilímaussaq, Narsaq, Kujalleq, Greenland
Class: 
Massive/Crystalline
Size Range: 
Thumbnail (1-3cm)
Size: 
1 × 1 × 0.5 cm
Description

Intergrown grey crystals of Naujakasite up to 0.5 mm large in parageneses of massive red Villiaumite in matrix.

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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