Sayrite
{{Infobox mineral
| name = Sayrite
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| formula = Pb2(UO2)5O6(OH)24(H2O)+| IMAsymbol = Syr{{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}}
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| strunz = 4/H.07-40
| dana = 5.9.6.1
| system = monoclinic
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| unit cell = a = 10.7 Å, b = 6.96 Å, c = 14.53 Å
β = 116.81°
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| colour = orange
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| cleavage = Distinct
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| density = 6.76
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| refractive = 1.77
| birefringence = Biaxial (-)
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| dispersion = relatively weak
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| other = 25px Radioactive
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Sayrite (Pb2(UO2)5O6(OH)24(H2O)) is an alteration product of uraninite named after the X-ray crystallographer David Sayre. Sayrite contains hydrogen, oxygen, uranium and lead. It is mined at Shinkolobwe Mine, (Kasolo Mine), Kambove District, Haut-Katanga, Democratic Republic of the Congo. It is usually orange in color but also can be reddish and yellowish and is in the monoclinic crystal system.{{Cite web|url=https://www.mindat.org/min-3545.html|title=Sayrite: Mineral information, data and localities.|website=www.mindat.org|access-date=2019-04-03}}{{Cite web|url=http://webmineral.com/data/Sayrite.shtml#.XKQ9RRNKjOQ|title=Sayrite Mineral Data|website=webmineral.com|access-date=2019-04-03}}