Gummite, Uraninite, Zircon
Small Cabinet, 8.7 x 7.1 x 2.0 cm
Ruggles mine, Grafton, Grafton Co., New Hampshire, USA

A very RICH and COLORFUL slab of massive, black uraninite and yellow to green, secondary uraninite alteration products or "gummite" associated with much dark brown zircon. 8.7 x 7.1 x 2.0 cm