Steverustite
Steverustite is an IMA-recognized mineral species in the oxides & hydroxide class, with the chemical formula Pb²⁺₅(OH)₅[Cu¹⁺(S⁶⁺O₃S²⁻)₃](H₂O)₂.
It crystallizes in the monoclinic crystal system (space group P2_1/n).
Key properties: specific gravity 5.15; White streak; Vitreous luster.
IMA symbol Svr, IMA status: approved, named in 2008.
Secondary by oxidation of galena in cavities in quartz veins.
It is found associated with Galena, covellite, cerussite, anglesite, hemimorphite, sussannite, bechererite, caledonite.
The mineral was named to honor Stephen Andrew Rust (b. 1952), a collector of United Kingdom minerals who discovered the mineral at the Frongoch mine.
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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