Zincomenite
Zincomenite is an IMA-recognized mineral species in the oxides & hydroxide class, with the chemical formula ZnSeO₃.
It crystallizes in the orthorhombic crystal system (space group Pbca).
Key properties: specific gravity 4.76; White streak; Adamantine luster; optically biaxial.
IMA symbol Znm, IMA status: approved, named in 2014.
Forms as a sublimate around active fumaroles.
It is found associated with Sellaite, fluorite, halite, anhydrite, cotunnite, sofiite, flinteite, anglesite, chubarovite, challacolloite, olsacherite, saltonseaite, hollandite, bixbyite.
An allusion to its chemical composition: zinc selenite (the Greek μηναζ means moon, indicating selenium).
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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