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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…
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mineral cubic so4 potassium germany piezoelectric substances sulfate luster formula k2mg2 system transparent colorless pale yellow green vitreous mohs hardness
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Langbeinite | Category | Sulfate mineral | 1.00 | infobox |
| Langbeinite | Color | Colorless with pale shades of yellow, pink, red, green, gray | 1.00 | infobox |
| Langbeinite | Crystal class | Tetartoidal (23) (same H-M symbol) | 1.00 | infobox |
| Langbeinite | Crystal habit | As nodules, disseminated grains, bedded massive | 1.00 | infobox |
| Langbeinite | Crystal system | Cubic | 1.00 | infobox |
| Langbeinite | Diaphaneity | Transparent | 1.00 | infobox |
| Langbeinite | Formula | K2Mg2(SO4)3 | 1.00 | infobox |
| Langbeinite | Fracture | Conchoidal | 1.00 | infobox |
| Langbeinite | IMA symbol | Lbn | 1.00 | infobox |
| Langbeinite | Luster | Vitreous | 1.00 | infobox |
| Langbeinite | Mohs scale hardness | 3.5–4 | 1.00 | infobox |
| Langbeinite | Optical properties | Isotropic | 1.00 | infobox |
| Langbeinite | Other characteristics | Piezoelectric | 1.00 | infobox |
| Langbeinite | Refractive index | n = 1.5329–1.5347 | 1.00 | infobox |
| Langbeinite | Solubility | 280 g/L (20°C); Slowly dissolves in water | 1.00 | infobox |
| Langbeinite | Space group | P213 | 1.00 | infobox |
| Langbeinite | Specific gravity | 2.83 | 1.00 | infobox |
| Langbeinite | Strunz classification | 7.AC.10 | 1.00 | infobox |
| Langbeinite | Tenacity | Brittle | 1.00 | infobox |
| Langbeinite | Unit cell | a = 9.92 Å; Z = 4 | 1.00 | infobox |
| Langbeinite | is a | potassium magnesium sulfate mineral with the chemical formula K2Mg2 | 0.90 | text |
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