Input interpretation
ferrocolumbite (mineral)
Image
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General properties
alternate names | Fe-columbite | columbite | coltan | niobite formula | Fe^(2+)Nb_2O_6
Basic properties
density | 6.3 g/cm^3 transparency | translucent | opaque luster | submetallic Mohs hardness | 6 streak | blackish brown magnetism | nonmagnetic color | black | brownish black fracture | subconchoidal molar mass | 337.7 g/mol (grams per mole)
Units
Mineral identifiers
Strunz ID | IV/D.18-30 Dana ID | 8.3.2.2
Crystallographic properties
crystal system | orthorhombic crystal class | 2/m2/m2/m unit cell volume | 417.2 Å^3 (cubic ångströms) d-spacing | 2.977 Å (ångströms) | 3.675 Å (ångströms) | 1.726 Å (ångströms) intensity | 100% | 40% | 16% molecules per unit cell | 4 molecules per cell refractive indices | 0 | 2.345 | 0 | 0 | 0 | 0 unit cell lengths | 5.746 Å (ångströms) | 14.31 Å (ångströms) | 5.075 Å (ångströms) unit cell angles | 90° (degrees) | 90° (degrees) | 90° (degrees)