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Bertossaite Brazilianite Lazulite

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CFL867082

Bertossaite Brazilianite Lazulite

Type Locality

Description Tabs

Description
Locality: 
Buranga Pegmatite, Gatumba, Ngororero District, Western Province, Rwanda
Class: 
Massive/Crystalline
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 3.5 × 2.3 cm
Description

Type locality specimen of massive pink bertossaite, associated with green brazilianite and blue lazulite.  Ex-Ecole Polytechnique (University of Montreal) specimen (label) exchange with Antonio Bertossa on August 13, 1969.

Mineral Data
What's on the rock

Bertossaite

Formula: 
(Li,Na)2(Ca,Fe2+,Mn2+)Al4(PO4)4(OH,F)4
Strunz: 
8.BH.25
Crystal System: 
Orthorhombic
Hardness: 
6.0
Colour: 
Pale pink
Type Locality: 
Buranga pegmatite, Gatumba District, Western Province, Rwanda

Brazilianite

Formula: 
NaAl3(PO4)2(OH)4
Strunz: 
8.BK.05
Crystal System: 
Monoclinic
Hardness: 
5.5
Streak: 
White
Type Locality: 
Córrego Frio mine, Linópolis, Divino das Laranjeiras, Doce valley, Minas Gerais, Brazil

Lazulite

Formula: 
(Mg,Fe2+)Al2(PO4)2(OH)2
Strunz: 
8.BB.40
Crystal System: 
Monoclinic
Hardness: 
5.5 - 6.0
Streak: 
White
Type Locality: 
Freßnitzgraben, Krieglach, Fischbacher Alpen, Styria, Austria

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