gunningite

{{Infobox mineral | name = Gunningite | category = Sulfate minerals | boxwidth = | boxbgcolor = | image = Gunningite.jpg | imagesize = | caption = Gunningite | formula = {{chem2|(Zn,Mn^{2+})SO4*H2O}} | IMAsymbol = Gun | molweight = | strunz = 7.CB.05 | dana = 29.6.2.5 | system = Monoclinic | class = Prismatic (2/m) (same H-M symbol) | symmetry = C2/c | color = White to colorless | colour = | habit = | twinning = | cleavage = Indistinct | fracture = | tenacity = | mohs = 2.5 | luster = Vitreous | streak = | diaphaneity = Translucent | gravity = 3.195 | density = | polish = | opticalprop = Biaxial (+) | refractive = nα = 1.570 nβ = 1.576 nγ = 1.630 | birefringence = | pleochroism = | 2V = | dispersion = | extinction = | length fast/slow = | fluorescence= | absorption = | melt = | fusibility = | diagnostic = | solubility = | other = | alteration = | references = }} Gunningite is one of the minerals in the Kieserite group, with the chemical formula {{chem2|(Zn,Mn^{2+})SO4*H2O}}. Its name honours Henry Cecil Gunning (1901–1991) of the Geological Survey of Canada and a professor at the University of British Columbia.

==Occurrence== Gunningite is rare. It is found in dry areas of the oxidized portions of sphalerite-bearing deposits. It has been noted in mines in Canada (Yukon Territory, British Columbia and New Brunswick), the United States (Nevada and Arizona), Switzerland (Valais), Greece (Attica) and Germany (Baden-Württemberg).