Brazilianite | |
Chemical Formula |
NaAl3(PO4)2(OH)4 |
Species |
Phosphates |
Crystal System |
Monoclinic |
Mohs Scale |
5 |
Specific Gravity |
2.98 |
Color |
Yellow, green, colorless |
Streak |
White |
Luster |
Vitreous, Sub-Vitreous, Greasy |
Refractive Index |
n = 1.602 n = 1.609 n = 1.621 - 1.623 |
Diaphaneity |
Transparent |
Cleavage |
Distinct/GoodGood on |
Fracture |
Conchoidal |
Crystal Habit:Prismatic; Spherical druses | |
Geological Setting:Phosphate zones in granitic pegmatites. Metamorphosed sedimentary deposits. |