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Langbeinite

Langbeinite is a potassium magnesium sulfate mineral with the chemical formula K2Mg2(SO4)3. Langbeinite crystallizes in the isometric-tetartoidal (cubic) system as transparent colorless or white with pale tints of yellow to green and violet crystalline masses. It has a vitreous luster. The Mohs hardness is 3.5 to 4 and the specific gravity is 2.83. The…

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Category
Sulfate mineral
Color
Colorless with pale shades of yellow, pink, red, green, gray
Crystal class
Tetartoidal (23) (same H-M symbol)
Crystal habit
As nodules, disseminated grains, bedded massive
Crystal system
Cubic
Diaphaneity
Transparent

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Langbeinite

Nodes22
Edges21
Triples21
Avg. degree1.91
Density0.090909
Components1

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Langbeinite

Top relations

Category · 1
Langbeinite → Sulfate mineral
Color · 1
Langbeinite → Colorless with pale shades of yellow, pink, red, green, gray
Crystal class · 1
Langbeinite → Tetartoidal (23) (same H-M symbol)
Crystal habit · 1
Langbeinite → As nodules, disseminated grains, bedded massive
Crystal system · 1
Langbeinite → Cubic
Diaphaneity · 1
Langbeinite → Transparent
Formula · 1
Langbeinite → K2Mg2(SO4)3
Fracture · 1
Langbeinite → Conchoidal
IMA symbol · 1
Langbeinite → Lbn
Luster · 1
Langbeinite → Vitreous

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Important terminology

mineral cubic so4 potassium germany piezoelectric substances sulfate luster formula k2mg2 system transparent colorless pale yellow green vitreous mohs hardness

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
LangbeiniteCategorySulfate mineral1.00infobox
LangbeiniteColorColorless with pale shades of yellow, pink, red, green, gray1.00infobox
LangbeiniteCrystal classTetartoidal (23) (same H-M symbol)1.00infobox
LangbeiniteCrystal habitAs nodules, disseminated grains, bedded massive1.00infobox
LangbeiniteCrystal systemCubic1.00infobox
LangbeiniteDiaphaneityTransparent1.00infobox
LangbeiniteFormulaK2Mg2(SO4)31.00infobox
LangbeiniteFractureConchoidal1.00infobox
LangbeiniteIMA symbolLbn1.00infobox
LangbeiniteLusterVitreous1.00infobox
LangbeiniteMohs scale hardness3.5–41.00infobox
LangbeiniteOptical propertiesIsotropic1.00infobox
LangbeiniteOther characteristicsPiezoelectric1.00infobox
LangbeiniteRefractive indexn = 1.5329–1.53471.00infobox
LangbeiniteSolubility280 g/L (20°C); Slowly dissolves in water1.00infobox
LangbeiniteSpace groupP2131.00infobox
LangbeiniteSpecific gravity2.831.00infobox
LangbeiniteStrunz classification7.AC.101.00infobox
LangbeiniteTenacityBrittle1.00infobox
LangbeiniteUnit cella = 9.92 Å; Z = 41.00infobox
Langbeiniteis apotassium magnesium sulfate mineral with the chemical formula K2Mg20.90text

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