Billietite
| Billietite | |
|---|---|
Becquerelite (yellow) and billietite (orange)
|
|
| General | |
| Category | Oxide minerals |
|
Formula (repeating unit) |
Ba(UO2)6O4(OH)6•8H2O |
| Strunz classification | 4.GB.10 |
| Dana classification | 5.7.1.3 |
| Crystal system | Orthorhombic |
| Crystal class | Pyramidal (mm2) (same H-M symbol) |
| Space group | Pbn21 |
| Identification | |
| Color | Yellow to golden-yellow, amber-yellow, orange-yellow |
| Cleavage | Perfect on {001}, imperfect on {110} and {010} |
| Tenacity | Brittle |
| Luster | Adamantine |
| Diaphaneity | Transparent, translucent |
| Density | 5.28 - 5.36 g/cm3 |
| References | |
Billietite is an uncommon mineral of Uranium that contains Barium. It has the chemical formula: Ba(UO2)6O4(OH)6•8H2O. It usually occurs as clear yellow orthorhombic crystals. Billietite is named after Valere Louis Billiet (1903–1944), Belgian crystallographer at the University of Ghent, Ghent, Belgium.
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