{{Infobox mineral | name = Miargyrite | boxwidth = | boxbgcolor = | image = Miargyrite-rare08-07a.jpg | imagesize = | alt = | caption = Miargyrite, San Genaro Mine, Castrovirreyna District, Peru (size: 6.1 × 4.2 × 2.7 cm). | category = | formula = AgSbS<sub>2</sub> | IMAsymbol = May<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.HA.10 | dana = | system = Monoclinic | class = Prismatic (2/m) <br/><small>(same H-M symbol)</small> | symmetry = ''C2/c'' | unit cell = | color = | colour = | habit = | twinning = | cleavage = | fracture = | tenacity = | mohs = 2–{{frac|2|1|2}} | luster = | streak = red | diaphaneity = | gravity = 5.2 | density = | polish = | opticalprop = | refractive = | birefringence = | pleochroism = | 2V = | dispersion = | extinction = | length fast/slow = | fluorescence = | absorption = | melt = 514°C | fusibility = | diagnostic = | solubility = | impurities = | alteration = | other = | prop1 = | prop1text = | references = <ref name=atlas>[https://www.mineralienatlas.de/lexikon/index.php/MineralData?mineral=Miargyrite Mineralienatlas]</ref><ref name=mindat>[http://www.mindat.org/min-2702.html Mindata]</ref><ref name=webmineral>[http://webmineral.com/data/Miargyrite.shtml Webmineral]</ref> }}
'''Miargyrite''', formerly known as ''ruby blende'' or ''garnet blende'' is a mineral, a sulfide of silver and antimony with the formula AgSbS<sub>2</sub>. It is a dimorph of cuboargyrite. Originally discovered in the Freiberg district of Germany in 1824, it has subsequently been found in many places where silver is mined. It usually occurs in low temperature hydrothermal deposits. and forms black metallic crystals which may show a dark red internal reflection. The streak is also red.
Miargyrite is named from the Greek ''meyon'', "smaller" and ''argyros'', "silver", as its silver content is lower than most silver sulfides.
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Category:Silver minerals Category:Antimony minerals Category:Sulfosalt minerals Category:Monoclinic minerals Category:Minerals in space group 15 Category:Blendes
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