Input interpretation
elbaite (mineral)
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General properties
alternate names | tourmaline | lithia tourmaline | Li-tourmaline | achroite | indicolite | rubellite formula | Na(Li, Al)_3Al_6(BO_3)_3Si_6O_18(OH)_4 discovery year | 1913
Basic properties
density | 3.05 g/cm^3 transparency | transparent | translucent | opaque birefringence | 0.019 luster | vitreous | resinous Mohs hardness | 7.5 tenacity | brittle streak | white magnetism | nonmagnetic color | blue | colorless | green | yellow | white fracture | subconchoidal molar mass | 916.7 g/mol (grams per mole)
Units
Mineral identifiers
Strunz ID | VIII/E.19-10 Dana ID | 61.3d.1.8
Crystallographic properties
crystal system | trigonal crystal class | 3m unit cell volume | 1543 Å^3 (cubic ångströms) d-spacing | 2.576 Å (ångströms) | 2.961 Å (ångströms) | 3.99 Å (ångströms) intensity | 100% | 85% | 85% molecules per unit cell | 3 molecules per cell refractive indices | 0 | 0 | 0 | 1.643 | 1.624 | 0 dispersion | weak unit cell lengths | 15.84 Å (ångströms) | 7.103 Å (ångströms) | 7.103 Å (ångströms) unit cell angles | 90° (degrees) | 90° (degrees) | 120° (degrees)
Wikipedia summary
Elbaite, a sodium, lithium, aluminium boro-silicate, with the chemical composition Na(Li_1.5Al_1.5)Al_6Si_6O_18(BO_3)_3(OH)_4, is a mineral species belonging to the six-member ring cyclosilicate tourmaline group.