Gunningite
(Zn,Mn2+)SO4·H2OIMA symbol Gun[1] Strunz classification 7.CB.05 Dana classification 29.6.2.5 Crystal system Monoclinic Crystal class Prismatic (2/m)
(same H-M symbol) Space group C2/c Identification Color White to colorless Cleavage Indistinct Mohs scale hardness 2.5 Luster Vitreous Diaphaneity Translucent Specific gravity 3.195 Optical properties Biaxial (+) Refractive index nα = 1.570 nβ = 1.576 nγ = 1.630 References [2][3][4]
(same H-M symbol)
Gunningite is one of the minerals in the Kieserite group, with the chemical formula (Zn,Mn2+)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.[3]
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).
See also
References
- ^ Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616.
- ^ http://rruff.geo.arizona.edu/doclib/hom/gunningite.pdf Handbook of Mineralogy
- ^ a b "Gunningite". mindat.org. Hudson Institute of Mineralogy. Retrieved October 10, 2020.
- ^ http://www.webmineral.com/data/Gunningite.shtml Webmineral data
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