What is "gummite"

Gummite \Gum"mite\, n. [So called because it occurs in rounded or flattened pieces which look like gum.] (Min.) A yellow amorphous mineral, essentially a hydrated oxide of uranium derived from the alteration of uraninite.

n. (context mineral English) A yellow, amorphous mineral, a mixture of oxides and silicates of uranium, formed by weathering of pitchblende.

n. a gummy orange mixture of uranium oxides and silicates occurring naturally in the hydration and oxidation of pitchblende

The material was also known under various names, mostly because of different origins of the samples, including: eliasite from Elias – the name of a mine at Jáchymov, coracite – a variety from Lake Superior, pittinite, pechuran, urangummit, and uranogummite.