gummite

gum·mite

G0312900 (gŭm′īt)n. An orange-red to grayish yellow mixture of several uranium oxides, silicates, and salts occurring naturally in the oxidation and hydration of uraninite.

[German Gummit, from Gummi, gum, from Middle High German, from Medieval Latin, from Latin; see gum¹.]

gummite

(ˈɡʌmaɪt) n (Minerals) an orange or yellowish amorphous secondary mineral consisting of hydrated uranium oxides

Thesaurus

Noun

gummite - a gummy orange mixture of uranium oxides and silicates occurring naturally in the hydration and oxidation of pitchblendemixture - (chemistry) a substance consisting of two or more substances mixed together (not in fixed proportions and not with chemical bonding)

Gummite

gummite

[′gə‚mīt] (mineralogy) Any of various yellow, orange, red, or brown secondary minerals containing hydrous oxides of uranium, thorium, and lead. Also known as uranium ocher.

Gummite

mineral formations of unstable composition that comprise mixtures of cryptocrystalline aggregates consisting of hydrated oxides and some uranium hydrosilicates. The principal minerals that form gummite are clarkeite (Na, K)₂ − _2r(Ca. Pb)_rU₂O₇.y H₂O, fourmarierite PbO-4UO₃-7—8H₂0, and kasolite Pb(U0₂)[Si0₄]H₂0; they are rarely found in pure form. Gummite forms thin crusts and irregular or circular concretions with a conchoidal fracture and a light-yellow or red-orange resinous luster. Its hardness on the mineralogical scale is 2.5–3 and its density. 4,700–5,800 kg/m³. Gummite is brittle. It develops as a result of changes in uraninite or pitchblende in the zone of oxidation of primary uranium ores.

G. P. BARSANOV

gummite

gum·mite

gummite

Gummite

gummite

Gummite

gummite

Words related to gummite

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

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