Svyazhinite
Svyazhinite is an IMA-recognized mineral species in the sulfate class, with the chemical formula MgAl(SO₄)₂F·14H₂O.
It crystallizes in the triclinic crystal system. It is a member of the Aubertite structural group.
Key properties: Mohs hardness 2; specific gravity 1.67; Vitreous luster; optically biaxial.
IMA symbol Svz, IMA status: approved, named in 1983.
A weathering product in fractures cutting pyrite–fluorite-bearing pyroxene–amphibole fenites.
It is found associated with Gypsum, pickeringite, melanterite, copiapite, epsomite, jarosite, pyrite, fluorite.
The mineral was named to honor Nikolai Vasil’evich Svyazhin (1927–1967), Russian mineralogist, Ural Mining Institute, Sverdlovsk, Russia.
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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