Chemistry:Löweite

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Löweite is a rare evaporite sulfate mineral with the chemical formula Na12Mg7(SO4)13·15H2O.[1] It occurs in marine salt deposits, saline playa crusts, and occasionally as a volcanic sublimation product. The mineral crystallizes in the hexagonal–trigonal system (space group R3) and is typically colorless, though it may appear reddish-yellow due to impurities.[2] Löweite has a vitreous luster and a Mohs hardness of 2.5–3.[3]

Discovery

Löweite was discovered in 1846 in at the Bad Ischler Salzberg near Bad Ischl, Austria.[2] and described and classified by the Austrian mineralogist Wilhelm Haidinger in 1847.[2] It is named in honor of the Austrian chemist and the Chief Assayer at the Mint in Vienna Alexander Löwe (de).[3]

Information

Examples of some Localities
Austria Germany Italy
Bad Ischler Salzberg (Perneck, Bad Ischl, Upper Austria)[1] Wilhelmshall near Staßfurt (Sachsen-Anhalt)[1] Le Cetine di Cotorniano Mine (Chiusdino, Siena, Tuscany)[2]

References

  1. ↑ 1.0 1.1 1.2 "Loweite Mineral Data". http://webmineral.com/data/Loweite.shtml. 
  2. ↑ 2.0 2.1 2.2 2.3 "Löweite". Mindat.org. https://www.mindat.org/min-2463.html. 
  3. ↑ 3.0 3.1 "Löweite" (PDF). https://www.handbookofmineralogy.org/pdfs/loweite.pdf. 



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