Formula: (Ba,Pb,Fe)(UO2)2(WO4)(OH)4.12H2O
Origin of name: from uranium and tungsten
Crystal system: Orthorhombic
Crystal class: 222
Twinning:
Unit cell: a = 9.22, b = 13.81, c = 7.17
Colour: Yellow to orange, brownish, yellow brown
Diaphaneity: Translucent
Luster: Dull, earthy
Habit: crystals lath-like, as spherulitic aggregates to 0.3 mm, microscopic
Hardness: about 2
Specific gravity: 4.27
Cleavage: 1; {010} perfect
Tenacity: Irregular fracture
Streak: Yellow
Synonyms/varieties:
Comments: dissolves in cold 1:1 HCl , radioactive
| Back to Alphabetical list | Colour photos | Optical properties/Thin sections | SEM images | TEM images | vibrational spectra description | IR spectra | Raman spectra | N-IR spectra | F-IR spectra | IES spectra |