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Vesuvianite

Vesuvianite, also known as idocrase, is a green, brown, yellow, or blue silicate mineral. Vesuvianite occurs as tetragonal crystals in skarn deposits and limestones that have been subjected to contact metamorphism. It was first discovered within included blocks or adjacent to lavas on Mount Vesuvius, hence its name. Attractive-looking crystals are…

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Birefringence
0.004–0.006
Category
Sorosilicate
Cleavage
Poor on {110} and {100} very poor on {001}
Color
Yellow, green, brown; colorless to white, brown-black, light green, emerald green, violet, blue-green to blue, pink, purple, red, black, commonly zoned
Crystal class
Ditetragonal dipyramidal (4/mmm) H-M symbol: (4/m 2/m 2/m)
Crystal habit
Short pyramidal to long prismatic crystals common, massive to columnar

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Vesuvianite

Nodes23
Edges22
Triples31
Avg. degree1.91
Density0.086957
Components1

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Vesuvianite

Top relations

related to Additional sources · 6
Vesuvianite → Cyprine, Deere, Franklin-SterlingMindat, Rock Forming Minerals, Vol, Webmineral
Birefringence · 1
Vesuvianite → 0.004–0.006
Category · 1
Vesuvianite → Sorosilicate
Cleavage · 1
Vesuvianite → Poor on {110} and {100} very poor on {001}
Color · 1
Vesuvianite → Yellow, green, brown; colorless to white, brown-black, light green, emerald green, violet, blue-green to blue, pink, purple, red, black, commonly zoned
Crystal class · 1
Vesuvianite → Ditetragonal dipyramidal (4/mmm) H-M symbol: (4/m 2/m 2/m)
Crystal habit · 1
Vesuvianite → Short pyramidal to long prismatic crystals common, massive to columnar
Crystal system · 1
Vesuvianite → Tetragonal
Diaphaneity · 1
Vesuvianite → Subtransparent to translucent
Formula · 1
Vesuvianite → Ca10(Mg, Fe)2Al4(SiO4)5(Si2O7)2(OH,F)4

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Important terminology

crystals also known idocrase vesuvius name sometimes variety brown blue fine tetragonal mineral blocks mount used sorosilicate green yellow specific

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
VesuvianiteBirefringence0.004–0.0061.00infobox
VesuvianiteCategorySorosilicate1.00infobox
VesuvianiteCleavagePoor on {110} and {100} very poor on {001}1.00infobox
VesuvianiteColorYellow, green, brown; colorless to white, brown-black, light green, emerald green, violet, blue-green to blue, pink, purple, red, black, commonly zoned1.00infobox
VesuvianiteCrystal classDitetragonal dipyramidal (4/mmm) H-M symbol: (4/m 2/m 2/m)1.00infobox
VesuvianiteCrystal habitShort pyramidal to long prismatic crystals common, massive to columnar1.00infobox
VesuvianiteCrystal systemTetragonal1.00infobox
VesuvianiteDiaphaneitySubtransparent to translucent1.00infobox
VesuvianiteFormulaCa10(Mg, Fe)2Al4(SiO4)5(Si2O7)2(OH,F)41.00infobox
VesuvianiteFractureSub conchoidal to irregular1.00infobox
VesuvianiteIMA symbolVes1.00infobox
VesuvianiteLusterVitreous to resinous1.00infobox
VesuvianiteMohs scale hardness6–71.00infobox
VesuvianiteOptical propertiesUniaxial (−)1.00infobox
VesuvianiteOther characteristicsstriated lengthwise1.00infobox
VesuvianitePleochroismslight in colored varieties1.00infobox
VesuvianiteRefractive indexnω = 1.703–1.752 nε = 1.700–1.7461.00infobox
VesuvianiteSolubilityVesuvianite is virtually insoluble in acids1.00infobox
VesuvianiteSpace groupP4/nnc1.00infobox
VesuvianiteSpecific gravity3.32–3.431.00infobox
VesuvianiteStreakWhite1.00infobox
VesuvianiteStrunz classification9.BG.351.00infobox
VesuvianiteTenacityBrittle1.00infobox
VesuvianiteTwinningFine twin domains observed1.00infobox
VesuvianiteUnit cella = 15.52 Å, c = 11.82 Å Z = 21.00infobox

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