Xiangjiangite

General Information: Chemical Formula:(Fe+++,Al)(UO2)4(PO4)2(SO4)2(OH)·22(H2O) Composition:(Molecular Weight = 1,916.94 gm)Uranium 49.67 % U Aluminum 0.70 % AlIron 1.46 % FePhosphorus 3.23 % P Hydrogen 2.37 % H Sulfur 3.35 % S Oxygen 39.23 % O  Empirical Formula: Fe3+0.5Al0.5(UO2)4(PO4)2(SO4)2(OH)·22(H2O) IMA Status:Approved IMA 1978 Locality:Xiangjiang River, Hunan, China. Name Origin:Named after the locality.Physical Properties: Color:yellow or bright yellow. Density:2.9 - 3.1, Average = 3 Habits:Microscopic Crystals - Crystals visible only with microscopes., Platy - Sheet forms (e.g. micas)., Hardness:1-2 - Between Talc and Gypsum Luster:Silky Streak:light yellowMore details...