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Villiaumite

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BCK576361

Villiaumite

Type Locality

Description Tabs

Description
Locality: 
Rouma Island, Los Archipelago, Conakry Region, Guinea
Class: 
Massive/Crystalline
Size Range: 
Thumbnail (1-3cm)
Size: 
2.1 × 1.4 × 1.3 cm
Description

You are bidding on a sample of nepheline syenite with several pink grains of villiaumite in matrix from the type locality! This is a rare sample formally from the American Museum of Natural History collection. 

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

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