Mineral: Uraninite
Locality: Ruggles Mine, Grafton, Grafton County, New Hampshire, USA
Dimensions: 11.2 x 8.6 x 4.5 cm

Description: A rich specimen of secondary uranium alteration products consisting of bright orange “gummite” and a yellow mixture of soddyite and perhaps uranophane. Black specks of uraninite are also present along with books of muscovite.

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