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Tyuyamunite : ウィキペディア英語版
Tyuyamunite

Tyuyamunite (pronounced tuh-YOO-ya-moon-ite) is a very rare uranium mineral with formula Ca(UO2)2V2O8·(5-8)H2O. It is a member of the carnotite group. It is a bright, canary-yellow color because of its high uranium content. Also, because of tyuyamunite's high uranium content, it is radioactive.〔Lynch, Dan R. and Bob Lynch, "Tyuyamunite," Ed. Brett Ortler, ''Michigan Rocks & Minerals,'' Adventure Publications, 2010 ISBN 978-1591932390〕 It was named by Konstantin Avtonomovich Nenadkevich, in 1912, after its discovery locality, Tyuya-Muyun, Fergana Valley, Kyrgyzstan.〔
==Formation and transformation==
Tyuyamunite is formed by the weathering of uraninite, a uranium-bearing mineral. Tyuyamunite, being a hydrous mineral, contains water. Yet when it is exposed to the atmosphere it loses its water. This process changes tyuyamunite into a different mineral known as metatyuyamunite〔 Ca(UO2)2(VO4)2·3-5H2O〔(Metatyuyamunite ) on (Mindat )〕

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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