Löweite is a rare evaporite sulfate mineral with the chemical formula Na12Mg7(SO4)13·15H2O. 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. Löweite has a vitreous luster and a Mohs hardness of 2.5–3.
Löweite is a rare evaporite sulfate mineral with the chemical formula Na12Mg7(SO4)13·15H2O. 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. Löweite has a vitreous luster and a Mohs hardness of 2.5–3.
== Discovery == Löweite was discovered in 1846 in at the Bad Ischler Salzberg near Bad Ischl, Austria. and described and classified by the Austrian mineralogist Wilhelm Haidinger in 1847. It is named in honor of the Austrian chemist and the Chief Assayer at the Mint in Vienna .
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).