# Chlorocalcite

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> Source: https://en.wikipedia.org/wiki/Chlorocalcite
> Source revision: 1352037105
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{{Infobox mineral
| name        = Chlorocalcite
| category    = [Halide mineral](/source/Halide_mineral)
| boxwidth    = 
| boxbgcolor  = 
| image       =
| imagesize   =
| caption     = 
| formula     = {{chem2|KCaCl3}}
| IMAsymbol=Ccal<ref>{{Cite journal|last=Warr|first=L.N.|date=2021|title=IMA–CNMNC approved mineral symbols|journal=Mineralogical Magazine|volume=85|issue=3|pages=291–320|doi=10.1180/mgm.2021.43|bibcode=2021MinM...85..291W|s2cid=235729616|doi-access=free}}</ref>
| strunz      = 3.AA.40
| molweight   = 185.54 g/mol
| system      = [Orthorhombic](/source/Orthorhombic)
| class       = Dipyramidal (mmm) <br/>[H-M symbol](/source/H-M_symbol): (2/m 2/m 2/m)
| symmetry    = ''Pnma'' (from synthetic crystals)
| unit cell   = a = 7.35&nbsp;Å, b = 10.44&nbsp;Å, <br/>c = 7.25&nbsp;Å; Z&nbsp;=&nbsp;4
| color       = White, tinged violet
| habit       = Prismatic or tabular cube-like crystals, pseudo [cubic](/source/cubic_crystal_system)
| twinning    = 
| cleavage    = Perfect on {001}, good on {010} and {100}
| fracture    = 
| tenacity    = 
| mohs        = 2.5-3
| luster      = 
| refractive  = ~1.52
| opticalprop = Biaxial (–)
| birefringence = weak
| pleochroism = 
| streak      = 
| gravity     =
| density     = 2.16 calculated
| melt        = 
| fusibility  = 
| diagnostic  = 
| solubility  = In water
| diaphaneity = Transparent to semi-transparent
| other       = Deliquescent
| references  = <ref>[https://www.mineralienatlas.de/lexikon/index.php/MineralData?mineral=Chlorocalcite Mineralienatlas]</ref><ref name=Mindat>[http://www.mindat.org/min-1020.html Chlorocalcite on Mindat.org]</ref><ref name=Webmin>[https://www.webmineral.com/data/Chlorocalcite.shtml Chlorocalcite on Webmineral]</ref><ref name=HBM>[http://rruff.geo.arizona.edu/doclib/hom/chlorocalcite.pdf Handbook of Mineralogy]</ref>
}}

'''Chlorocalcite''' is a rare potassium calcium chloride [evaporite](/source/evaporite) mineral with formula: KCaCl<sub>3</sub>. It is found in active volcanic [fumarole](/source/fumarole)s.

It was first described in 1872 for an occurrence on [Mount Vesuvius](/source/Mount_Vesuvius) and given the name for its calcium content previous to discovering that it also contained potassium.<ref name=Mindat/><ref name=Webmin/> It has also been reported from the Desdemona Mine, Peine, [Lower Saxony](/source/Lower_Saxony), [Germany](/source/Germany).<ref name=Mindat/>

==References==
{{Reflist}}

Category:Potassium minerals
Category:Calcium minerals
Category:Chloride minerals
Category:Orthorhombic minerals
Category:Minerals in space group 62
Category:Mount Vesuvius

{{halide-mineral-stub}}

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Adapted from the Wikipedia article [Chlorocalcite](https://en.wikipedia.org/wiki/Chlorocalcite) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Chlorocalcite?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.