Löweite

Löweite
Names
Systematic IUPAC name
Dodecasodium heptamagnesium tridecasulfate pentadecahydrate
Other names
  • Loweite
  • Loeweite
Properties
Na12Mg7(SO4)13·15H2O
Appearance Colorless; may appear reddish‑yellow to orange if iron oxide impurities are present
Density 2.36–2.42 g/cm3
Structure
Hexagonal–trigonal
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

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.

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