Research Article
The Synthesis and Physical Properties of Magnesium Borate Mineral of Admontite Synthesized from Sodium Borates
Table 2
Crystallographic data of synthesized magnesium borates.
| | Mineral name | Admontite | Mcallisterite |
| | Pdf number | 01-076-0540 | 01-070-1902 | | Chemical formula | MgO(B2O3)3·7(H2O) | Mg2(B6O7(OH)6)2·9(H2O) | | Molecular weight (g/mole) | 375.27 | 768.56 | | Crystal system | Monoclinic | Rhombohedral | | Space group | P21/c (number 14) | Pr3c (number 167) | | (Å) | 12.6610 | 11.5490 | | (Å) | 10.0910 | 11.5490 | | (Å) | 11.3220 | 35.5670 | | (°) | 90.00 | 90.00 | | (°) | 109.60 | 90.00 | | (°) | 90.00 | 120.00 | | 4.00 | 6.00 | | Density (calculated) (g·cm−3) | 1.83 | 1.86 |
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