Birimba, №321, B.P40 Rumonge Burundi
Welcome To Société Coopérative Minérales Mutabazi
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Burundi
Chemical Formula | NaAlSi2O6 |
Color | Green, white, yellow, lavender, black, and more |
Hardness | 6.5 – 7 on the Mohs scale |
Density | 3.30 – 3.38 g/cm³ |
Refractive Index | 1.66 – 1.68 |
Transparency | Translucent to opaque |
Luster | Vitreous to greasy |
Crystal System | Monoclinic |
Cleavage | Perfect along (010) |
Fracture | Conchoidal |
Melting Point | Approximately 1,200 – 1,300 °C |
Specific Gravity | 3.30 – 3.38 |
Origin | Myanmar (Burma), Guatemala, Japan, and other locations |
Uses | Ornamental, gemstones, carvings |
Transparency | Mostly translucent to opaque |