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Chervetite Francevillite & Mounanaite

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SCH48098

Chervetite Francevillite & Mounanaite

Type Locality

Description Tabs

Description
Locality: 
Mounana Mine, Franceville, Haut-Ogooué Province, Gabon
Size Range: 
Thumbnail (1-3cm)
Size: 
2.8 × 1.6 × 1.2 cm
Description

An excellent and rare specimen with a matrix covered by bright brownish crystals of francevillite. Several crystals of chervetite are scattered over the francevillite. At the backside there is a reddish brown crust of mounanaite microcrystals.

Very good specimen!

Mineral Data
What's on the rock

Chervetite

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

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

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
schani

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