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 % Al
Iron 1.46 % Fe
Phosphorus 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 yellow
More details...