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Bixbyite

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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Category
Oxide minerals
Cleavage
Imperfect on {111}, in traces
Color
Black
Common impurities
Al, Mg, Si, Ti
Crystal class
Diploidal (m3) H-M symbol: (2/m 3)
Crystal habit
Massive to crystalline

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Bixbyite

Nodes41
Edges40
Triples25
Avg. degree1.95
Density0.04878
Components1

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Bixbyite

Top relations

Category · 1
Bixbyite → Oxide minerals
Cleavage · 1
Bixbyite → Imperfect on {111}, in traces
Color · 1
Bixbyite → Black
Common impurities · 1
Bixbyite → Al, Mg, Si, Ti
Crystal class · 1
Bixbyite → Diploidal (m3) H-M symbol: (2/m 3)
Crystal habit · 1
Bixbyite → Massive to crystalline
Crystal system · 1
Bixbyite → Cubic
Dana classification · 1
Bixbyite → 4.3.7.2
Density · 1
Bixbyite → 4.95
Diaphaneity · 1
Bixbyite → Opaque

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Important terminology

also mineral manganese iron beryl cavities metallic ima oxide formula mn fe 2o3 black mohs hardness references utah named minerals

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
BixbyiteCategoryOxide minerals1.00infobox
BixbyiteCleavageImperfect on {111}, in traces1.00infobox
BixbyiteColorBlack1.00infobox
BixbyiteCommon impuritiesAl, Mg, Si, Ti1.00infobox
BixbyiteCrystal classDiploidal (m3) H-M symbol: (2/m 3)1.00infobox
BixbyiteCrystal habitMassive to crystalline1.00infobox
BixbyiteCrystal systemCubic1.00infobox
BixbyiteDana classification4.3.7.21.00infobox
BixbyiteDensity4.951.00infobox
BixbyiteDiaphaneityOpaque1.00infobox
BixbyiteFormula.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…1.00infobox
BixbyiteFormula mass158.33 g/mol1.00infobox
BixbyiteFractureIrregular to uneven1.00infobox
BixbyiteIMA symbolBxb1.00infobox
BixbyiteLusterMetallic1.00infobox
BixbyiteMohs scale hardness6 – .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…1.00infobox
BixbyiteOptical propertiesIsotropic1.00infobox
BixbyiteRefractive index2.51 – 2.561.00infobox
BixbyiteSpace groupIa31.00infobox
BixbyiteSpecific gravity5.121.00infobox
BixbyiteStreakBlack1.00infobox
BixbyiteStrunz classification4.CB.101.00infobox
BixbyiteTwinningOn {111}, as penetration twins1.00infobox
BixbyiteUnit cella = 9.411 Å; Z = 161.00infobox
Bixbyiteis amanganese iron oxide mineral with chemical formula0.90text

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