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Mineralpedia Details for Francevillite

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Francevillite

Francevillite

Formula
Ba(UO2)2(VO4)2ยท5H2
Crystal System
Orthorhombic 
Cleavage
Perfect, None, None 
Luster
Adamantine - Pearly 
Color
brownish yellow, yellow, yellow green 
Streak
light yellow 
Class
Orthorhombic - Dipyramidal 
Hardness
WebMineral
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Francevillite from Mounana mine, Franceville, Haut-Ogooué, Gabon

Francevillite
            from Mounana mine, Franceville, Haut-Ogooué, Gabon

Exceptional bright orange clusters and single crystals in diamond-shaped forms.

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Francevillite from Pandora mine, San Juan Co., Utah, United States

Francevillite
            from Pandora mine, San Juan Co., Utah, United States

The face of the specimen is covered with thousands of beautiful yellow crystals.

Click thumbnail images for larger view.

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