# Chloroxiphite

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> Markdown URL: https://mediated.wiki/source/Chloroxiphite.md
> Source: https://en.wikipedia.org/wiki/Chloroxiphite
> Source revision: 1352509804
> License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/)

{{Short description|Mineral}}
{{Infobox mineral
| name        = Chloroxiphite
| boxwidth    =
| boxbgcolor  =
| image       = Chloroxiphite-Diaboleite-Mendipite-154926.jpg
| imagesize   = 260px
| alt         = Photograph of a mendipite sample with a dark crystal of chloroxiphite embedded in it and a smaller, bright blue diaboleite crystal at the chloroxiphite's top edge.
| caption     = Chloroxiphite crystal (dark green) embedded in mendipite. The bright blue material is diaboleite.
| category    = [Halide mineral](/source/Halide_mineral)
| formula     = Pb<sub>3</sub>CuO<sub>2</sub>Cl<sub>2</sub>(OH)<sub>2</sub>
| IMAsymbol=Cxp<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>  
| molweight   =
| strunz      = 3.DB.30
| system      = [Monoclinic](/source/Monoclinic)
| class       = Prismatic (2/m) <br/><small>(same [H-M symbol](/source/H-M_symbol))</small>
| symmetry    = ''P2''<sub>1</sub>/m
| unit cell   = a = 6.6972(8)&nbsp;Å, <br/>b = 5.7538(5)&nbsp;Å, <br/>c = 10.4686(14)&nbsp;Å; <br/>β = 97.747(10)°; Z&nbsp;=&nbsp;2
| color       = Dull olive green to pistachio-green
| colour      =
| habit       = Elongated, flatenned, striated and often curved crystals and groups
| twinning    =
| cleavage    = Perfect on {{mset|{{overline|1}}01}}, distinct on {{mset|100}}
| fracture    =
| tenacity    = Very brittle, friable
| mohs        = {{frac|2|1|2}}
| luster      = Adamantine, resinous
| streak      = Light green yellow
| diaphaneity = Transparent
| gravity     = 6.76–6.93
| density     =
| polish      =
| opticalprop = Biaxial (−)
| refractive  = n<sub>α</sub> = 2.160 n<sub>β</sub> = 2.240 n<sub>γ</sub> = 2.250
| birefringence = δ = 0.090
| pleochroism = Visible: Y = yellowish brown; Z = bright emerald-green
| 2V          = Measured: ~70°
| dispersion  =
| extinction  =
| length fast/slow =
| fluorescence =
| absorption  =
| melt        =
| fusibility  =
| diagnostic  =
| solubility  =
| impurities  =
| alteration  =
| other       =
| references  = <ref>[https://www.mineralienatlas.de/lexikon/index.php/MineralData?mineral=Chloroxiphite Mineralienatlas]</ref><ref name=Mindat>[http://www.mindat.org/min-953.html Mindat.org]</ref><ref name=Webmin>[http://www.webmineral.com/data/Chloroxiphite.shtml Webmineral.com]</ref><ref name=HBM>[http://www.handbookofmineralogy.com/pdfs/chloroxiphite.pdf Handbook of Mineralogy]</ref>
}}

'''Chloroxiphite''' is a rare olive green to pistachio green lead copper [halide mineral](/source/halide_mineral) with formula: Pb<sub>3</sub>CuO<sub>2</sub>Cl<sub>2</sub>(OH)<sub>2</sub>.

It was first discovered in 1923 in the [Mendip Hills](/source/Mendip_Hills), [Somerset](/source/Somerset), England associated with [mendipite](/source/mendipite).<ref name=Mindat/> Like mendipite it is an [oxychloride](/source/oxychloride) mineral and formed from the alteration of [lead ore](/source/lead_ore) ([galena](/source/galena)) by secondary [oxidation](/source/oxidation).  In addition to mendipite, it occurs with [diaboleite](/source/diaboleite), [parkinsonite](/source/parkinsonite), [wulfenite](/source/wulfenite), [cerussite](/source/cerussite) and [hydrocerussite](/source/hydrocerussite).<ref name=HBM/>  Its name comes from the [Greek](/source/Greek_language) words (χλωρός) "green", describing its color, and (ζιφος) "blade" as its [crystal](/source/crystal) form is long blade-like crystals that often show the growth pattern and time taken to form.<ref name=Mindat/>

== References ==
{{Reflist}}

Category:Lead minerals
Category:Copper(II) minerals
Category:Halide minerals
Category:Monoclinic minerals
Category:Minerals in space group 11

{{Halide-mineral-stub}}

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