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Iraqite-(La) & Villiaumite

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SKY648637

Iraqite-(La) & Villiaumite

Rare Mineral

Description Tabs

Description
Locality: 
Aris Quarry, Windhoek Rural, Khomas Region, Namibia
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.7 × 1.4 × 1.4 cm
Description

White sharp crystals of this rare mineral associated to pink villiaumite in a contrasting matrix. 

Very nice under the microscope for the contrast of colors.

Mineral Data
What's on the rock

Iraqite-(La)

Formula: 
K(Ca,Na)2(La,Ce,Th)[(Si,Al)8O20]
Strunz: 
9.CH.10
Hardness: 
4.5
Type Locality: 
Shakhi-Rash Mt., Hero, Qala-Diz (Qala-Dizeh; Qala-Diza), Iraq

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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