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Sylvite

Sylvite, or sylvine, is potassium chloride (KCl) in natural mineral form. It forms crystals in the isometric system very similar to normal rock salt, halite (NaCl). The two are, in fact, isomorphous. Sylvite is colorless to white with shades of yellow and red due to inclusions. It has a Mohs hardness of 2.5 and a specific gravity of 1.99. It has a…

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Category
Halide mineral
Cleavage
Perfect on , ,
Color
Colorless to white, pale gray, pale blue; may be yellowish red to red due to hematite inclusions
Crystal class
Hexoctahedral (m3m) H-M symbol: (4/m 3 2/m)
Crystal habit
As cubes and octahedra; columnar, in crusts, coarse granular, massive
Crystal system
Isometric

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Sylvite

Nodes20
Edges19
Triples33
Avg. degree1.9
Density0.1
Components1

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Sylvite

Top relations

related to External links · 5
Sylvite → Cambridge University Press, Encyclopædia Britannica, Hugh, Mineral Resources, Saskatchewan Chisholm
see also · 2
Sylvite → Sedimentary, Sylvinite
Category · 1
Sylvite → Halide mineral
Cleavage · 1
Sylvite → Perfect on , ,
Color · 1
Sylvite → Colorless to white, pale gray, pale blue; may be yellowish red to red due to hematite inclusions
Crystal class · 1
Sylvite → Hexoctahedral (m3m) H-M symbol: (4/m 3 2/m)
Crystal habit · 1
Sylvite → As cubes and octahedra; columnar, in crusts, coarse granular, massive
Crystal system · 1
Sylvite → Isometric
Diaphaneity · 1
Sylvite → Transparent to translucent
Formula · 1
Sylvite → KCl

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Important terminology

saskatchewan mineral deposits halite kcl evaporite isometric potassium found crystals system colorless white red due inclusions mohs hardness specific gravity

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
SylviteCategoryHalide mineral1.00infobox
SylviteCleavagePerfect on , ,1.00infobox
SylviteColorColorless to white, pale gray, pale blue; may be yellowish red to red due to hematite inclusions1.00infobox
SylviteCrystal classHexoctahedral (m3m) H-M symbol: (4/m 3 2/m)1.00infobox
SylviteCrystal habitAs cubes and octahedra; columnar, in crusts, coarse granular, massive1.00infobox
SylviteCrystal systemIsometric1.00infobox
SylviteDiaphaneityTransparent to translucent1.00infobox
SylviteFormulaKCl1.00infobox
SylviteFormula mass74.55 g/mol1.00infobox
SylviteFractureUneven1.00infobox
SylviteIMA symbolSyl1.00infobox
SylviteLusterVitreous1.00infobox
SylviteMohs scale hardness21.00infobox
SylviteOptical propertiesIsotropic1.00infobox
SylviteOther characteristicsSalty to bitter taste1.00infobox
SylvitePleochroismVisible in colored crystals1.00infobox
SylviteRefractive index1.49031.00infobox
SylviteSolubilitySoluble in water1.00infobox
SylviteSpace groupFm3m1.00infobox
SylviteSpecific gravity1.9931.00infobox
SylviteStreakWhite1.00infobox
SylviteStrunz classification3.AA.201.00infobox
SylviteTenacityBrittle to ductile1.00infobox
SylviteUltraviolet fluorescenceNone1.00infobox
SylviteUnit cella = 6.2931 Å; Z = 41.00infobox
Sylviteis aofficial mineral of Saskatchewan.Sylvite was first described in 1832 at Mount Vesuvius near Napoli in Italy and named after historical KCl designations sal degistivum Sylvii and…0.90text

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