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Bixbyite is a manganese iron oxide mineral with chemical formula: (Mn,Fe)2O3. The iron/manganese ratio is quite variable and many specimens have almost no iron. It is a metallic dark black with a Mohs hardness of 6.0 – 6.5. It is a somewhat rare mineral sought after by collectors as it typically forms euhedral isometric crystals exhibiting various cubes…
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also mineral manganese iron beryl cavities metallic ima oxide formula mn fe 2o3 black mohs hardness references utah named minerals
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Bixbyite | Category | Oxide minerals | 1.00 | infobox |
| Bixbyite | Cleavage | Imperfect on {111}, in traces | 1.00 | infobox |
| Bixbyite | Color | Black | 1.00 | infobox |
| Bixbyite | Common impurities | Al, Mg, Si, Ti | 1.00 | infobox |
| Bixbyite | Crystal class | Diploidal (m3) H-M symbol: (2/m 3) | 1.00 | infobox |
| Bixbyite | Crystal habit | Massive to crystalline | 1.00 | infobox |
| Bixbyite | Crystal system | Cubic | 1.00 | infobox |
| Bixbyite | Dana classification | 4.3.7.2 | 1.00 | infobox |
| Bixbyite | Density | 4.95 | 1.00 | infobox |
| Bixbyite | Diaphaneity | Opaque | 1.00 | infobox |
| Bixbyite | Formula | .mw-parser-output .template-chem2-su{display:inline-block;font-size:80%;line-height:1;vertical-align:-0.35em}.mw-parser-output .template-chem2-su>span{display:block;text-align:l… | 1.00 | infobox |
| Bixbyite | Formula mass | 158.33 g/mol | 1.00 | infobox |
| Bixbyite | Fracture | Irregular to uneven | 1.00 | infobox |
| Bixbyite | IMA symbol | Bxb | 1.00 | infobox |
| Bixbyite | Luster | Metallic | 1.00 | infobox |
| Bixbyite | Mohs scale hardness | 6 – .mw-parser-output .frac{white-space:nowrap}.mw-parser-output .frac .num,.mw-parser-output .frac .den{font-size:80%;line-height:0;vertical-align:super}.mw-parser-output .frac… | 1.00 | infobox |
| Bixbyite | Optical properties | Isotropic | 1.00 | infobox |
| Bixbyite | Refractive index | 2.51 – 2.56 | 1.00 | infobox |
| Bixbyite | Space group | Ia3 | 1.00 | infobox |
| Bixbyite | Specific gravity | 5.12 | 1.00 | infobox |
| Bixbyite | Streak | Black | 1.00 | infobox |
| Bixbyite | Strunz classification | 4.CB.10 | 1.00 | infobox |
| Bixbyite | Twinning | On {111}, as penetration twins | 1.00 | infobox |
| Bixbyite | Unit cell | a = 9.411 Å; Z = 16 | 1.00 | infobox |
| Bixbyite | is a | manganese iron oxide mineral with chemical formula | 0.90 | text |
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