{{infobox mineral | name = Jalpaite | image = Jalpaite-rom38a.jpg | alt = | caption = Jalpaite crystals from Jalpa, Municipio de Jalpa, Zacatecas, Mexico (size: 3.6 x 3.5 x 3.2 cm) | category = Sulfide mineral | formula = Ag<sub>3</sub>CuS<sub>2</sub> | IMAsymbol = Jal<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 = 2.BA.45 | dana = | system = Tetragonal | class = Ditetragonal dipyramidal (4/mmm) <br/>H-M symbol: (4/m 2/m 2/m) | symmetry = ''I''4<sub>1</sub>/amd | unit cell = a = 8.67, c = 11.75&nbsp;[Å]; Z&nbsp;=&nbsp;8 | color = Pale metallic gray | colour = | habit = Irregular and foliated masses, inclusions in other minerals | twinning = | cleavage = Prismatic, good | fracture = Subconchoidal | tenacity = Sectile, malleable | mohs = 2 - 2.5 | luster = Metallic | streak = Black | diaphaneity = Opaque | gravity = 6.82–6.85 | density = | polish = | opticalprop = | refractive = | birefringence = | pleochroism = Distinct in oil, brownish gray to pure gray | 2V = | dispersion = | extinction = | length fast/slow = | fluorescence = | absorption = | melt = | fusibility = | diagnostic = | solubility = | impurities = | alteration = Tarnishes with iridescence | other = | references = <ref name=HBM>[http://rruff.geo.arizona.edu/doclib/hom/jalpaite.pdf Handbook of Mineralogy]</ref><ref name=Mindat>[http://www.mindat.org/min-2069.html Mindat.org]</ref><ref name=Webmin>[http://www.webmineral.com/data/Jalpaite.shtml Webmineral data]</ref> }} '''Jalpaite''' is a rare copper silver sulfide mineral with formula Ag<sub>3</sub>CuS<sub>2</sub>.

It was first described in 1858 for an occurrence in the Leonora Mine, Jalpa, Zacatecas, Mexico and named after the locality.<ref name=Mindat/> It occurs in low temperature hydrothermal veins at temperatures less than {{convert|117|C}}. Associated minerals include acanthite, mckinstryite, galena, sphalerite, pyrite, chalcopyrite, stromeyerite, polybasite, pearceite, tetrahedrite–tennantite and native silver.<ref name=HBM/>

==References== {{Reflist}}

Category:Sulfide minerals Category:Copper(I) minerals Category:Silver minerals Category:Tetragonal minerals Category:Minerals in space group 141 Category:Minerals described in 1858

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