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Berborite is a beryllium borate mineral with the chemical formula Be2(BO3)(OH,F)·(H2O). It is colorless and leaves a white streak. Its crystals are hexagonal to pyramidal. It is transparent and has vitreous luster. It is not radioactive. Berborite is rated 3 on the Mohs Scale.
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2h polytype 2t beryllium norway hexagonal occurs occurrence karelia pyramidal natrolite borate formula be2 bo3 oh h2o colorless white streak
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Berborite | Birefringence | δ = 0.095 | 1.00 | infobox |
| Berborite | Category | Borate minerals | 1.00 | infobox |
| Berborite | Cleavage | {0001} Perfect | 1.00 | infobox |
| Berborite | Color | Colorless | 1.00 | infobox |
| Berborite | Crystal class | 1T polytype: Pyramidal (3) 2H polytype: Pyramidal (6) 2T polytype: Ditrigonal pyramidal (3m) | 1.00 | infobox |
| Berborite | Crystal system | 1T polytype: Trigonal 2H polytype: Hexagonal 2T polytype: Trigonal | 1.00 | infobox |
| Berborite | Dana classification | 26.1.1.1 | 1.00 | infobox |
| Berborite | Density | 2.2 | 1.00 | infobox |
| Berborite | Diaphaneity | Transparent | 1.00 | infobox |
| Berborite | Formula | Be2(BO3)(OH,F)•H2O | 1.00 | infobox |
| Berborite | Fracture | Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern. | 1.00 | infobox |
| Berborite | IMA symbol | Bbo | 1.00 | infobox |
| Berborite | Luster | Vitreous (Glassy) | 1.00 | infobox |
| Berborite | Mohs scale hardness | 3 | 1.00 | infobox |
| Berborite | Optical properties | Uniaxial (-) | 1.00 | infobox |
| Berborite | Refractive index | nω = 1.580 nε = 1.485 | 1.00 | infobox |
| Berborite | Space group | 1T polytype: P3 (no. 143) 2H polytype: P63 (no. 173) 2T polytype: P3c1 (no. 158) | 1.00 | infobox |
| Berborite | Streak | white | 1.00 | infobox |
| Berborite | Strunz classification | 6.AB.10 | 1.00 | infobox |
| Berborite | Twinning | Complex | 1.00 | infobox |
| Berborite | Ultraviolet fluorescence | none | 1.00 | infobox |
| Berborite | Unit cell | a = 4.43 Å, c = 5.34 Å; Z = 2; V = 90.76 Å3 (2H polytype) | 1.00 | infobox |
| Berborite | is a | beryllium borate mineral with the chemical formula Be2 | 0.90 | text |
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