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LangbeiniteLangbeinite is a potassium magnesium sulfate mineral with formula: K2Mg2(SO4)3. Langbeinite crystallizes in the isometric - tetartoidal 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 phosphorescent and piezoelectric. Additional recommended knowledgeThe mineral is an ore of potassium and occurs in marine evaporite deposits in association with carnallite, halite and sylvite. It was first described in 1891 and named for A. Langbein of Leopoldshall, Germany. References
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This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Langbeinite". A list of authors is available in Wikipedia. |