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guilleminite : ウィキペディア英語版 | guilleminite Guilleminite (Ba(UO2)3(SeO3)2(OH)4•3H2O) is a uranium mineral named by R. Pierrot, J. Toussaint, and T. Verbeek in 1965 in honor of Jean Claude Guillemin (1923–1994), a chemist and mineralogist. It is a rare uranium/selenium mineral found at the Musonoi Mine in the Katanga Province of the Democratic Republic of the Congo.〔(Guilleminite: Guilleminite mineral information and data on Mindat.org )〕 This secondary mineral also includes barium in its structure, in addition to selenium and uranium. It is bright yellow in colour and usually has an acicular crystal habit. It has a Mohs hardness of 2–3.〔(Pierrot R, Toussaint J, Verbeek T. ''Bull. Soc. Franc. Mineral. Crist.'' 1965; 88: 132. )〕 ==References==
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