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RM3669 Uraninite and gummite
Uraninite partially coated with gummite; we can see the inner part of the black uraninite and the gummite surrounding it. The faces of the cube are also clearly visible. Gummite is a yellow amorphous mixture of uranium minerals, oxides, silicates, and hydrates of uranium, derived from the alteration of uraninite. It is named for its gum-like luster.
Size: 19 x 15 x 13 mm.
Excol. David P. Wilber.
Presents radioactive activity ☢.
190 €
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