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Gunningite

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Gunningite
Gunningite
General
CategorySulfate minerals
Formula
(repeating unit)		(Zn,Mn2+)SO4·H2O
IMA symbolGun[1]
Strunz classification7.CB.05
Dana classification29.6.2.5
Crystal systemMonoclinic
Crystal classPrismatic (2/m)
(same H-M symbol)
Space groupC2/c
Identification
ColorWhite to colorless
CleavageIndistinct
Mohs scale hardness2.5
LusterVitreous
DiaphaneityTranslucent
Specific gravity3.195
Optical propertiesBiaxial (+)
Refractive indexnα = 1.570 nβ = 1.576 nγ = 1.630
References[2][3][4]

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

  1. ^ 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.
  2. ^ http://rruff.geo.arizona.edu/doclib/hom/gunningite.pdf Handbook of Mineralogy
  3. ^ a b "Gunningite". mindat.org. Hudson Institute of Mineralogy. Retrieved October 10, 2020.
  4. ^ http://www.webmineral.com/data/Gunningite.shtml Webmineral data


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