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Thorianite is a rare thorium oxide mineral, ThO 2. [5] It was originally described by Ananda Coomaraswamy in 1904 as uraninite, [ 6 ] but recognized as a new species by Wyndham R. Dunstan . [ 7 ] It was so named by Dunstan on account of its high percentage of thorium ; it also contains the oxides of uranium , lanthanum , cerium , praseodymium ...
Thorianite is the name of the mineralogical form of thorium dioxide. It is moderately rare and crystallizes in an isometric system. It is moderately rare and crystallizes in an isometric system. The melting point of thorium oxide is 3300 °C – the highest of all known oxides.
Thorium occurs in several minerals including thorite (ThSiO 4), thorianite (ThO 2 + UO 2) and monazite. Thorianite is a rare mineral and may contain up to about 12% thorium oxide. Monazite contains 2.5% thorium, allanite has 0.1 to 2% thorium and zircon can have up to 0.4% thorium. [2] Thorium-containing minerals occur on all continents.
Thorium dioxide occurs as the rare mineral thorianite. Due to its being isotypic with uranium dioxide, these two common actinide dioxides can form solid-state solutions and the name of the mineral changes according to the ThO 2 content.
Here, with Dunstan, thorianite [1] from Ceylon was described as a new mineral and he published papers on baddeleyite and zirkelite [2] from Ceylon [3] and carnotite from South Australia. [4] After this, he spent time in Matto Grosso , Brazil exploring for minerals, looking for gold at Timmins around Porcupine Lake, Ontario, and prospecting for ...
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This list includes those recognised minerals beginning with the letter T.The International Mineralogical Association is the international group that recognises new minerals and new mineral names; however, minerals discovered before 1959 did not go through the official naming procedure, although some minerals published previously have been either confirmed or discredited since that date.
Oxide mineral exhibit at the Museum of Geology in South Dakota. The oxide mineral class includes those minerals in which the oxide anion (O 2−) is bonded to one or more metal alloys.