Hydroglauberite
Hydroglauberite is an IMA-recognized mineral species in the sulfate class, with the chemical formula Na₁₀Ca₃(SO₄)₈·6H₂O.
Key properties: specific gravity 1.51; Silky in aggregates luster; optically biaxial.
IMA symbol Hglb, IMA status: approved, named in 1968.
An uncommon alteration product of glauberite.
It is found associated with Glauberite, halite, mirabilite, polyhalite, thénardite, blödite (Kushkanatau salt deposit, Uzbekistan); gypsum, mirabilite, halite (Salar de Pintados, Chile).
The name refers to the essential water content and chemical similarity to glauberite.
Index entry. This entry combines official IMA/RRUFF species data with published physical-property data — a full written entry hasn’t been published yet.
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