Francevillite, Chervetite, Curienite
Mounana Mine, Mounana, Léboumbi-Leyou Department, Haut-Ogooué Province, Gabon
This specimen at first glance seems to be a pretty good francevillite (orange) with curienite (yellow). It is indeed that - very rich, colorful, and with awfully large crystals for francevillite! HOWEVER, the piece ALSO hosts outstanding, huge, really sharp crystals of the much rarer associated species Chervetite, named For French mineralogist, ...
© Rob Lavinsky & irocks.com