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Guilleminite

Type Locality
Musonoi Mine, Kolwezi, Kolwezi District, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of Congo (Zaïre)
Mineral Data
Ba(UO2)3(SeO3)2(OH)4·3H2O
Strunz: 
4.JJ.10
Physical Properties
Crystal System: 
Orthorhombic
Hardness: 
2.0 - 0.0
Tenacity: 
brittle
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