
1) Mixture 2) Uranium mineral
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https://www.crosswordclues.com/clue/gummite

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 consistence. 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 Jách...
Found on
http://en.wikipedia.org/wiki/Gummite

• (n.) A yellow amorphous mineral, essentially a hydrated oxide of uranium derived from the alteration of uraninite.
Found on
http://thinkexist.com/dictionary/meaning/gummite/

mixture of natural uranium oxides, representing the final oxidation and hydration stages of uraninite, that usually occurs as dense masses and ...
Found on
http://www.britannica.com/eb/a-z/g/82
Gum'mite noun [ 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.
Found on
http://www.encyclo.co.uk/webster/G/67

Gummite is a yellow amorphous mineral, essentially a hydrated oxide of uranium derived from the alteration of uraninite.
Found on
http://www.probertencyclopaedia.com/browse/HG.HTM

[
n] - a gummy orange mixture of uranium oxides and silicates occurring naturally in the hydration and oxidation of pitchblende
Found on
http://www.webdictionary.co.uk/definition.php?query=gummite

a yellow to red alteration product of pitchblende and a minor ore of uranium, having a greasy luster and occurring in gumlike masses.
Found on
https://www.infoplease.com/dictionary/gummite
No exact match found.