| Mineral class | Phosphates |
| Chemical formula | NaBePO4 |
| Crystal system | Monoclinic, Class : 2/m, Space group P21/n, Z=12 |
| Lattice constants | a=8.13kX b=7.76 c=14.17 ß=90º 00´ |
| Diffraction lines | 2.84(100) 3.65(90) 2.28(70) |
| Optical constants | alpha=1.5520 beta=1.5579(Na) gamma=1.561 (-)2V=67º 56´ |
| Habitus | Crystals tabular to short prismatic, often highly modified. Crystal faces often etched rough. Twinnings on {101} common. Also polysynthetic. |
| Cleavage | {010} perfect. {100} good, interrupted. {101} indistinct. Fracture brittle conchoidal. |
| Hardness | 5.5-6 |
| Density | 2.84 |
| Color | Usually colorless, white or pale yellow. |
| Streak | |
| Luster | Transparent to translucent, vitreous, pearly on perfect cleavage. |
| Description | |
| Occurance | In granite pegmatites. |
| Associates | Albite, tourmaline, herderite, eosphorite, muscovite, quartz ... |
| Notes | |
| Locations | A rare mineral in Sweden
|
| To silicate index. |
Mineral group index. |
Main index. |
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