Hydrozincite

2+1⁄2LusterSilky, pearly, dull, earthyStreakWhiteDiaphaneityTransparent, translucentSpecific gravity3.5–4Optical propertiesBiaxial (−)Refractive indexnα = 1.630 nβ = 1.642 nγ = 1.750Birefringenceδ = 0.1202V angleMeasured: 40°, calculated: 40°Dispersionrelatively strongUltraviolet fluorescenceFluoresces pale blue to lilac under UVSolubilityReadily soluble in acids.References[2][3][4]

Hydrozincite, also known as zinc bloom or marionite, is a white carbonate mineral consisting of Zn5(CO3)2(OH)6. It is usually found in massive rather than crystalline form.

It occurs as an oxidation product of zinc ores and as post mine incrustations. It occurs associated with smithsonite, hemimorphite, willemite, cerussite, aurichalcite, calcite and limonite.[2]

It was first described in 1853 for an occurrence in Bad Bleiberg, Carinthia, Austria and named for its chemical content.[3]

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. ^ a b Handbook of Mineralogy
  3. ^ a b Mindat
  4. ^ Webmineral data
  • Mineral galleries data

External links

  • Media related to Hydrozincite at Wikimedia Commons


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