Uraninite, also known as pitchblende, is a radioactive, uranium-rich mineral and ore with a chemical composition that is largely UO2 but because of oxidation...
9 KB (784 words) - 21:02, 25 August 2024
naturally formed in supernova explosions. The primary uranium ore mineral is uraninite (UO2) (previously known as pitchblende). A range of other uranium minerals...
46 KB (4,828 words) - 23:26, 1 September 2024
is now not regarded as a separate mineral species, but as a variety of uraninite. In 1903, large reserves of helium were found in natural gas fields in...
146 KB (16,168 words) - 18:25, 1 September 2024
asbestiform serpentine) Citrine (yellow variety of quartz) Cleveite (variety of uraninite) Clinochrysotile (polytype of chrysotile) Coltan (short for minerals of...
42 KB (2,782 words) - 11:49, 1 September 2024
several oxides: Uranium dioxide or uranium(IV) oxide (UO2, the mineral uraninite or pitchblende) Diuranium pentoxide or uranium(V) oxide (U2O5) Uranium...
2 KB (157 words) - 00:47, 23 September 2023
and in hydrothermal vein type deposits. It occurs in association with uraninite, thorite, pyrite, marcasite, roscoelite, clay minerals and amorphous organic...
14 KB (1,291 words) - 11:53, 4 April 2024
1898 from ore mined at Jáchymov. They extracted the radium compound from uraninite and published the discovery at the French Academy of Sciences five days...
77 KB (8,337 words) - 04:14, 6 September 2024
fractures, joints, and minor faults within the Katanga synclinorium. Uraninite mineralization occurred 630 Ma ago, when uraniferous solutions percolated...
20 KB (2,293 words) - 07:56, 27 August 2024
Marie and Pierre Curie in 1898. They extracted the radium compound from uraninite and published the discovery at the French Academy of Sciences five days...
22 KB (1,925 words) - 14:42, 24 July 2024
amounts of the yttrium earths. It is an alteration product of yttrian uraninite. It was first described by Adolf Erik Nordenskiöld, who discovered it...
2 KB (88 words) - 06:59, 12 January 2024