{{Infobox mineral | name = Chlorargyrite | boxwidth = | boxbgcolor = | image = Chlorargyrite-Embolite-rh3-10a.jpg | imagesize = 260px | alt = | caption = | category = Halide | formula = AgCl | IMAsymbol=Cag<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.AA.15 | dana = | system = Isometric | class = Hexoctahedral (m{{Overline|3}}m) <br/>H-M symbol (4/m {{Overline|3}} 2/m) | symmetry = ''F''m{{Overline|3}}m | unit cell = | color = Colorless when fresh; alters to bright chartreuse-green, light yellow, light green, grey, violet-brown on exposure to light | colour = | habit = Massive to columnar | twinning = | cleavage = | fracture = Irregular/uneven, sub-conchoidal | tenacity = Sectile | mohs = 1.5–2.5 | luster = Adamantine, resinous, waxy | streak = White | diaphaneity = | gravity = 5.556 | density = | polish = | opticalprop = Isotropic | refractive = n = 2.071 | birefringence = | pleochroism = | 2V = | dispersion = | extinction = | length fast/slow = | fluorescence = | absorption = | melt = | fusibility = | diagnostic = | solubility = | impurities = | alteration = | other = | prop1 = | prop1text = | references = <ref>[https://www.mindat.org/min-1014.html Chlorargyrite data on Mindat.org]</ref><ref name=HBM>{{Cite web |url=http://www.handbookofmineralogy.com/pdfs/chlorargyrite.pdf |title=Handbook of Mineralogy |access-date=2017-04-24 |archive-date=2016-03-04 |archive-url=https://web.archive.org/web/20160304190457/http://www.handbookofmineralogy.com/pdfs/chlorargyrite.pdf |url-status=dead }}</ref><ref name=Webmin>[http://www.webmineral.com/data/Chlorargyrite.shtml#.WP38wojytPY Chlorargyrite data on Webmineral]</ref> }}{{Short description|Mineral form of silver chloride}} '''Chlorargyrite''' is the mineral form of silver chloride (AgCl).<ref>{{cite EB1911|wstitle=Cerargyrite}}</ref> Chlorargyrite occurs as a secondary mineral phase in the oxidation of silver mineral deposits. It crystallizes in the isometric–hexoctahedral crystal class. Typically massive to columnar in occurrence it also has been found as colorless to variably yellow cubic crystals. The color changes to brown or purple on exposure to light. It is quite soft with a Mohs hardness of 1 to 2 and dense with a specific gravity of 5.55. It is also known as '''cerargyrite''' and, when weathered by desert air, as '''horn silver'''. Bromian chlorargyrite (or embolite) is also common. Chlorargyrite is water-insoluble.
It occurs associated with native silver, cerussite, iodargyrite, atacamite, malachite, jarosite and various iron–manganese oxides.<ref name=HBM/>
It was first described in 1875 for occurrences in the Broken Hill district, New South Wales, Australia. The rich Bridal Chamber deposit at Lake Valley, Sierra County, New Mexico was almost pure chlorargyrite.<ref>{{cite book|last1=O’Neill|first1=J. Michael |display-authors=etal |title=Geologic Investigations in the Lake Valley Area, Sierra County, New Mexico|date=2002|publisher=U.S. Department of the Interior, U.S. Geological Survey|location=Denver, CO|url=https://purl.fdlp.gov/GPO/LPS21915|accessdate=3 February 2018}}</ref> The name is from the Greek, chloros for "pale green" and Latin for silver, argentum.<ref name=Webmin/>
==See also== {{commons category|Chlorargyrite}}
==References== {{Reflist}} * Palache, C., H. Berman, and C. Frondel (1951) Dana's system of mineralogy, (7th edition), v. II, pp. 11–15
Category:Chloride minerals Category:Silver minerals Category:Alchemical substances Category:Cubic minerals Category:Minerals in space group 225 Category:Minerals described in 1875