Campostriniite
Campostriniite is an IMA-recognized mineral species in the sulfate class, with the chemical formula (Bi₂.₅Na₀.₅)(NH₄)₂Na₂(SO₄)₆·H₂O.
It crystallizes in the monoclinic crystal system (space group C2/c). It is a member of the Görgeyite structural group.
Key properties: specific gravity 3.87; White streak; Vitreous luster.
IMA symbol Cps, IMA status: approved, named in 2013.
A sublimate on pyroclastic breccia at a volcanic fumarole.
It is found associated with Adranosite, demicheleite-(Br), demicheleite-(I), argesite, sassolite.
The mineral was named to honor Italo Campostrini (b. 1959), a mineralogist active in the study of volcanic sublimates.
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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