Input interpretation
ferrotantalite (mineral)
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General properties
alternate names | tantalite | tantalite-Fe | tantalite-iron formula | Fe^(2+)Ta_2O_6
Basic properties
density | 8.2 g/cm^3 transparency | opaque birefringence | 0.17 luster | submetallic Mohs hardness | 6.25 streak | black brown magnetism | nonmagnetic color | brownish black | black fracture | brittle | conchoidal molar mass | 513.7 g/mol (grams per mole)
Units
Mineral identifiers
Strunz ID | IV/D.18-50 Dana ID | 8.3.2.1
Crystallographic properties
crystal system | orthorhombic crystal class | 2/m2/m2/m unit cell volume | 414.5 Å^3 (cubic ångströms) d-spacing | 2.96 Å (ångströms) | 3.66 Å (ångströms) | 1.721 Å (ångströms) intensity | 100% | 50% | 20% molecules per unit cell | 4 molecules per cell refractive indices | 2.26 | 2.35 | 2.43 | 0 | 0 | 0 unit cell lengths | 5.73 Å (ångströms) | 14.24 Å (ångströms) | 5.08 Å (ångströms) unit cell angles | 90° (degrees) | 90° (degrees) | 90° (degrees)