{{Short description|Sulfosalt mineral}} {{Infobox mineral | name = Berryite | boxwidth = | boxbgcolor = | image = Berryite.jpg | imagesize = | alt = | caption = Black acicular crystals of the rare Pb-Ag sulfide from a Colorado locality: Mike Mine, San Juan County, Colorado, United States | struct image = | struct caption = | struct imagesize = | struct2 image = | struct2 caption = | struct2 imagesize = | SMILES = | Jmol = | category = | formula = {{chem2|Cu3Ag2Pb3Bi7S16}} | IMAsymbol=Bry<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.HB.20d (10th) | dana = 3.6.15.1 | system = Monoclinic | class = 2/m (Prismatic) | symmetry = | unit cell = 1,445.93 Å<sup>3</sup> | colour = Bluish-grey, white, grey-white | habit = | twinning = Repeated | cleavage = Poor/indistinct | fracture = | tenacity = <!-- | toughness = 131–152 kg/mm<sup>2</sup> (Vickers) --> | mohs = 3.5 | luster = Metallic | streak = | diaphaneity = Opaque | gravity = 6.7 | density = 6.7 g/cm<sup>3</sup> (measured) | polish = | opticalprop = | refractive = | birefringence = | pleochroism = Weak | 2V = | dispersion = | extinction = | length fast/slow = | fluorescence = | absorption = | melt = | Curie temp = | fusibility = | diagnostic = | solubility = | impurities = | alteration = | other = | prop1 = | prop1text = | references = }} '''Berryite''' is a mineral with the formula {{Chem2|Pb3(Ag,Cu)5Bi7S16}}. It occurs as gray to blue-gray monoclinic prisms. It is opaque and has a metallic luster. It has a Mohs hardness of 3.5 and a specific gravity of 6.7.
It was first identified in 1965 using X-ray diffraction by mineralogist Leonard G. Berry (1914–1982). It is found in Park and San Juan counties in Colorado. It occurs in sulfide bearing quartz veins in Colorado and with siderite-rich cryolite in Ivigtut, Greenland.
== References == {{Reflist}} *[http://webmineral.com/data/Berryite.shtml Webmineral data] *[http://www.mindat.org/min-638.html Mindat with location data] *[http://rruff.geo.arizona.edu/doclib/hom/berryite.pdf Mineral Data Publishing - PDF]
Category:Lead minerals Category:Silver minerals Category:Copper(I) minerals Category:Bismuth minerals Category:Sulfosalt minerals Category:Monoclinic minerals Category:Minerals in space group 11
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