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) - 11:36, 6 April 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 (4,826 words) - 03:51, 5 June 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 (16,169 words) - 18:47, 12 August 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...
74 KB (7,980 words) - 11:06, 14 August 2024
Cleveite is an impure radioactive variety of uraninite containing uranium, found in Norway. It has the composition UO2 with about 10% of the uranium substituted...
2 KB (175 words) - 03:48, 17 August 2022
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
Yellowcake is hazardous when inhaled. Uranium ore deposits Uranium mining Uraninite, an ore that is mostly uranium dioxide (UO2) Yellowcake forgery, fraudulently...
7 KB (739 words) - 04:22, 22 July 2024
fractures, joints, and minor faults within the Katanga synclinorium. Uraninite mineralization occurred 630 Ma ago, when uraniferous solutions percolated...
20 KB (2,295 words) - 05:40, 29 July 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
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
ThO2. It was originally described by Ananda Coomaraswamy in 1904 as uraninite, but recognized as a new species by Wyndham R. Dunstan. It was so named...
10 KB (871 words) - 09:33, 14 November 2023
radioactive, crystalline powder that naturally occurs in the mineral uraninite. It is used in nuclear fuel rods in nuclear reactors. A mixture of uranium...
19 KB (1,965 words) - 08:55, 18 May 2024
radioactive elements could be a defining constituent, such as uranium in uraninite, autunite, and carnotite, or present as trace impurities, as in zircon...
109 KB (13,007 words) - 16:14, 20 July 2024
and is commercially extracted from uranium-bearing minerals such as uraninite. Many contemporary uses of uranium exploit its unique nuclear properties...
110 KB (12,436 words) - 13:31, 13 August 2024
asbestiform serpentine) Citrine (yellow variety of quartz) Cleveite (variety of uraninite) Clinochrysotile (polytype of chrysotile) Coltan (short for minerals of...
42 KB (2,761 words) - 22:04, 14 August 2024
oxides, silicates, and hydrates of uranium, derived from the alteration of uraninite. It is named for its gum-like luster. The material has been known by various...
721 bytes (81 words) - 23:26, 5 February 2021
This sample of uraninite contains about 100,000 atoms (3.7×10−17 g) of francium-223 at any given time....
36 KB (4,059 words) - 13:28, 10 July 2024
75–100 mol% ThO2; uranothorianite, 25–75 mol% ThO2; thorian uraninite, 15–25 mol% ThO2; uraninite, 0–15 mol% ThO2. At the time, the rare-earth elements, among...
136 KB (15,966 words) - 16:40, 9 August 2024
Chromium, Uranium Ferric Hydroxide, Sulfide, Pyrite, Reduced Chromium, Uraninite Reductive Dehalogenation Halogen compound with electron donor Reduced...
25 KB (2,859 words) - 04:12, 25 April 2024
sediments older than about 2 billion years contained grains of pyrite, uraninite, and siderite, all minerals containing reduced forms of iron or uranium...
84 KB (9,399 words) - 21:59, 4 August 2024
This sample of uraninite contains about 100,000 atoms (3.3×10−20 g) of francium-223 at any given time....
214 KB (23,508 words) - 00:37, 13 August 2024
parts per trillion, but may reach up to a few parts per million in some uraninite ore deposits. Because of its scarcity, high radioactivity, and high toxicity...
50 KB (5,824 words) - 02:54, 13 July 2024
the gold is associated with other minerals, especially iron pyrite and uraninite, as well as carbon rich materials such as kerogen, or bitumen, which occurs...
39 KB (3,718 words) - 04:30, 5 August 2024
U Nuclear fuel, ammunition, radiation shielding Pitchblende (UO2) in uraninite placer deposits; carnotite (K2(UO2)2(VO4)2 3H2O) in placer deposits Vanadium...
60 KB (5,466 words) - 20:18, 10 March 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
is commonly associated with zircon, monazite, gadolinite, fergusonite, uraninite, yttrialite and pyrochlore. Thorite is currently an important ore of uranium...
6 KB (409 words) - 20:51, 18 January 2024
and occur in reducing environments. Common uranous minerals include uraninite and coffinite. Hutchinson, R. W.; Blackwell, J. D. (1984). "Time, crustal...
2 KB (194 words) - 20:02, 13 March 2024
Uca Uranosphaerite Us Ussingite Usg Uedaite-(Ce) Ued-Ce Umbrianite Ubn Uraninite Urn Uranospinite Usp Ustarasite Utr Uklonskovite Ukl Umohoite Umo Uranocircite-II...
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containing natural uranium-bearing (U-238) ore samples (autunite, torbernite, uraninite, and carnotite from the "Colorado plateau region") Low-level radiation...
14 KB (1,471 words) - 03:41, 31 July 2024
Uraninite ores have elevated concentrations of actinium....
42 KB (4,651 words) - 16:42, 9 August 2024