langbeinite
Sign in to saveLangbeinite 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 crystals are piezoelectric.
Key facts
- Mineral.name
- Langbeinite
- Mineral.image
- File:Langbeinite-553833.jpg
- Mineral.imagesize
- 260px
- Mineral.category
- Sulfate mineral
- Mineral.formula
- K2Mg2(SO4)3
- Mineral.IMAsymbol
- Lbn
- Mineral.strunz
- 7.AC.10
- Mineral.system
- Cubic
- Mineral.class
- Tetartoidal (23) (same H-M symbol)
- Mineral.symmetry
- P213
- Mineral.unit cell
- a = 9.92 Å; Z = 4
- Mineral.color
- Colorless with pale shades of yellow, pink, red, green, gray
- Mineral.habit
- As nodules, disseminated grains, bedded massive
- Mineral.fracture
- Conchoidal
- Mineral.tenacity
- Brittle
- Mineral.mohs
- 3.5–4
- Mineral.luster
- Vitreous
- Mineral.diaphaneity
- Transparent
via Wikipedia infobox
Wikidata facts
- Image
- History museum of Truskavets 086.jpg
Show 6 more facts
- IMA Mineral Symbol
- Lbn
- chemical formula
- K₂Mg₂(SO₄)₃
- Strunz 8th edition (series ID, updated)
- VI/A.02
- Nickel-Strunz 9th edition (updated 2009)
- 7.AC.10
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 7.AC.10
- Commons category
- Langbeinite
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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 crystals are piezoelectric.
The mineral is an ore of potassium and occurs in marine evaporite deposits in association with carnallite, halite, and sylvite.