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MINERALOGY

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Mineral: URSILITE = MAGNIOURSILITE or CALCIOURSILITE
Formula: (Mg,Ca)4[(UO2)4(OH)5/(Si2O5)5,5].13H2O
Crystal System: Orthorhombic
References: ZVMO 106 (1977), 553; MM 82/3 (2018), 779-785
Type Locality: Oktyabrskoye U Deposit, Kyzyltyube-Sai, Khodzhent (Leninabad), Viloyati Sogd, Tajikistan

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