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Francevillite Chervetite & Curienite

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CR150291

Francevillite Chervetite & Curienite

Type Locality
Rare Mineral

Description Tabs

Description
Locality: 
Mounana Mine, Franceville, Haut-Ogooué Province, Gabon
Size Range: 
Small cabinet (7-10 cm)
Size: 
7 × 5.5 × 3 cm
Description

This is truely a fantastic and extremely rich Francevillite specimen from the type locality.

Orange to yellow fracevillite all over the surface of this beautiful specimen with some grey chervetite crystals and minor yellow curientite.

Mounana Mine is the type locality of all three minerals species.

Ex Armin Wendland collection - collected in the 1960s

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

Curienite

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