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Francevillite & Chervetite & Mounanaite

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Francevillite & Chervetite & Mounanaite

Description Tabs

Description
Locality: 
Mounana Mine, Franceville, Haut-Ogooué Province, Gabon
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6 × 4.5 × 2.8 cm
Description

Orange-red francevillite associated with colourless chervetite and filigrane yellow curienite. Orange red francevillite is surrounded by brownish-red mounanaite. Analysis on request.  

Rare mineral!

Mineral Data
What's on the rock

Francevillite

Formula: 
(Ba,Pb)(UO2)2(VO4)2·5H2O
Strunz: 
4.HB.15
Hardness: 
3.0
Type Locality: 
Mounana Mine (Mouana Mine), Franceville, Haut-Ogooué Province, Gabon

Chervetite

Formula: 
Pb2(V2O7)
Strunz: 
8.FA.15
Hardness: 
2.0 - 2.5
Type Locality: 
Mounana Mine (Mouana Mine), Franceville, Haut-Ogooué Province, Gabon

Mounanaite

Formula: 
PbFe3+2(VO4)2(OH,F)2
Strunz: 
8.CG.15
Crystal System: 
Triclinic
Hardness: 
0.0
Type Locality: 
Mounana Mine (Mouana Mine), Franceville, Haut-Ogooué Province, Gabon