Research Results For 'Uraninite'

URANIUM

Uranium is a silvery, heavy radioactive, polyvalent metallic element that is found especially in pitchblende and Uraninite and exists naturally as a mixture of three radioactive isotopes of mass number 234, 235 and 238 in the proportions of .006%, .71% and 99.28% respectively. Uranium was discovered by Klaproth in 1789, but not isolated until 1840. It has the symbol U.
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GUMMITE

Gummite is a yellow amorphous mineral, essentially a hydrated oxide of uranium derived from the alteration of uraninite.
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URANINITE

Uraninite is a radioactive important source of uranium. It consists chiefly of uranium oxide with some lead, thorium, etc. It occurs in pegmatites and veins in granite; also as sedimentary deposits. It is found in black octahedrons and also in masses with a pitch like lustre. It has a relative hardness of 6.
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