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Thorianite

Thorianite is a rare thorium oxide mineral, ThO2. It was originally described by Ananda Coomaraswamy in 1904 as uraninite, but recognized as a new species by Wyndham R. Dunstan. It was so named by Dunstan on account of its high percentage of thorium; it also contains the oxides of uranium, lanthanum, cerium, praseodymium and neodymium. Helium is present…

Occurrence, Overview & Chemistry

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Category
Oxide mineral
Cleavage
Poor/Indistinct
Color
Dark gray, brown-black
Crystal class
Hexoctahedral (m3m) H-M symbol: (4/m 3 2/m)
Crystal habit
Cubic crystals, usually rounded to some degree in detrital deposits
Crystal system
Isometric

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Chemistry

Occurrence

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Map overview Semantic statistics

Thorianite

Nodes69
Edges68
Triples27
Avg. degree1.97
Density0.028986
Components1

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Thorianite

Top relations

related to Varieties · 4
Thorianite → Aldanite, PbO, UO2, UranothorianiteThorianite CerianThorianite La
Category · 1
Thorianite → Oxide mineral
Cleavage · 1
Thorianite → Poor/Indistinct
Color · 1
Thorianite → Dark gray, brown-black
Crystal class · 1
Thorianite → Hexoctahedral (m3m) H-M symbol: (4/m 3 2/m)
Crystal habit · 1
Thorianite → Cubic crystals, usually rounded to some degree in detrital deposits
Crystal system · 1
Thorianite → Isometric
Diaphaneity · 1
Thorianite → Opaque, translucent on thin edges
Formula · 1
Thorianite → Thorium oxide, ThO2
Fracture · 1
Thorianite → Irregular to uneven, sub-conchoidal

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Important terminology

thorium crystals mineral uraninite also black cm madagascar reported cerium tho2 usually alluvial radioactive sands present near dunstan high deposits

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
ThorianiteCategoryOxide mineral1.00infobox
ThorianiteCleavagePoor/Indistinct1.00infobox
ThorianiteColorDark gray, brown-black1.00infobox
ThorianiteCrystal classHexoctahedral (m3m) H-M symbol: (4/m 3 2/m)1.00infobox
ThorianiteCrystal habitCubic crystals, usually rounded to some degree in detrital deposits1.00infobox
ThorianiteCrystal systemIsometric1.00infobox
ThorianiteDiaphaneityOpaque, translucent on thin edges1.00infobox
ThorianiteFormulaThorium oxide, ThO21.00infobox
ThorianiteFractureIrregular to uneven, sub-conchoidal1.00infobox
ThorianiteIMA symbolTho1.00infobox
ThorianiteLusterResinous, sub-metallic1.00infobox
ThorianiteMohs scale hardness6.5 – 71.00infobox
ThorianiteOptical propertiesIsotropic1.00infobox
ThorianiteOther characteristicsRadioactive1.00infobox
ThorianiteRefractive indexn = 2.20 – 2.351.00infobox
ThorianiteSpace groupFm3m1.00infobox
ThorianiteSpecific gravity9.71.00infobox
ThorianiteStreakGrey, grey green to black1.00infobox
ThorianiteStrunz classification4.DL.051.00infobox
ThorianiteTwinningPenetration twins on {111} common1.00infobox
ThorianiteUnit cella = 5.595 Å; Z = 41.00infobox
Thorianiteis arare thorium oxide mineral0.90text

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