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Rietveldite

Type Locality
Jáchymov District, Karlovy Vary Region, Bohemia, Czech Republic Or Willi Agatz Mine, Dresden, Saxony, Germany Or Giveway-Simplot Mine, White Canyon District, San Juan County, Utah, USA
Mineral Data
Fe(UO2)(SO4)2(H2O)5
Physical Properties
Colour: 
Brownish-yellow
Crystal System: 
Orthorhombic
Streak: 
White
Hardness: 
2
Tenacity: 
Brittle
Synonyms
Synonyms: 
IMA2016-081 and Unnamed (Fe-U Sulphate Hydrate)