Rutherfordine, Uraninite
Thumbnail, 1.5 x 1.5 x 1.2 cm
Uluguru Mts (Uruguru Mts), Morogoro Region, Tanzania

A thin coating of yellowish rutherfordine completely covers a relatively large uraninite cube on this rare old treasure from the radioactive deposits that extend a bit into Tanzania, but is seldom accessible to collectors these days! Ex. Carl Davis Thumbnail Collection 1.5 x 1.5 x 1.2 cm