Zincmelanterite
A zinc-bearing melanterite — soft yellow-green efflorescences of oxidized sulfide mines.
Intro adapted from Wikipedia (CC BY-SA).
Zincmelanterite is an IMA-recognized mineral species in the sulfate class, with the chemical formula Zn(SO₄)·7H₂O.
It crystallizes in the monoclinic crystal system. It is a member of the Melanterite structural group.
Key properties: Mohs hardness 2–2.5; specific gravity 2.02–2.03; White streak; Vitreous to resinous luster; optically biaxial.
IMA symbol Zmln, IMA status: approved, named in 1920.
A rare mineral formed in the oxidation zone of pyritic ore deposits.
It is found associated with Sphalerite, chalcopyrite, pyrite.
As the zinc-dominant member of the melanterite group.
Index entry. This entry combines official IMA/RRUFF species data with published physical-property data and a Wikipedia introduction — a full written entry hasn’t been published yet.
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