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boussingaultite : ウィキペディア英語版 | boussingaultite
Boussingaultite is a rare sulfate mineral of the chemical formula: (NH4)2Mg(SO4)2·6(H2O). The formula of boussingaultite is that of Tutton's salts type. It was originally described from geothermal fields in Tuscany, Italy, where it occurs together with its iron analogue mohrite,〔Fleischer M. 1965: New mineral names. American Mineralogist, 50, pp. 805〕 but is more commonly found on burning coal dumps.〔Chesnokov B. V. and Shcherbakova E. P. 1991: Mineralogiya gorelykh otvalov Chelyabinskogo ugolnogo basseina - opyt mineralogii tekhnogenesa. Nauka, Moscow〕 The mineral possess monoclinic symmetry and forms clear, often rounded crystals.〔 The mineral is named after the French chemist Jean-Baptiste Boussingault (1802–1887). ==References==
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