Chemical Formula: Fe2+Al2(PO4)2(OH)2·8H2O
Locality: Llallagua, Potosi, Bolivia.
Name Origin: Named for the chemical similarity to vauxite. Polymorph of metavauxite.
History
Discovery date : 1922
Town of Origin: LLALLAGUA, POTOSI
Country of Origin : BOLIVIE
Optical properties
Optical and misc. Properties : Transparent – Translucide – Fragile, cassant
Refractive Index : from 1,55 to 1,57
Axial angle 2V: 72°
Physical properties
Hardness: 3,00
Density : 2,36
Color : colorless; greenish white
Luster : vitreous; nacreous
Streak: white
Break: conchoidal
Cleavage : Yes
Photos :
2(OH)2·8H2O Locality: Llallagua, Potosi, Bolivia. Name Origin: Named for the chemical similarity to vauxite. Po){kind=link}