Richard M. Westfall's Photo Gallery
CJA-7DDUraninite UO2 , Becquerelite Ca(UO2)6O4(OH)6·8H2O , Uranophane Ca(UO2)2(SiO3OH)2·5H2O
Shinkolobwe Mine, Shinkolobwe, Kambove Territory, Haut-Katanga, DR CongoDimensions: 4 cm x 3 cm x 2 cm
Weight: 70 g
The black substrate is Uraninite and the yellow colored crust is a mixture of Becquerelite and Uranophane. The mixed yellow area is very complex minerals distribution with the brightest yellow color being the Uranophane.