Löweite

Löweite
Names
	Systematic IUPAC name Dodecasodium heptamagnesium tridecasulfate pentadecahydrate
	Other names Loweite; Loeweite;
Properties
Chemical formula	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
Crystal 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.^[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]

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Names

Systematic IUPAC name Dodecasodium heptamagnesium tridecasulfate pentadecahydrate
Other names Loweite Loeweite
Properties
Chemical formula	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
Crystal 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