{{Infobox mineral | name = Uranocircite | boxwidth = | boxbgcolor = | image = Uranocircite-51177.jpg | imagesize = | alt = | caption = Uranocircite | category = Phosphate mineral | formula = Ba(UO<sub>2</sub>)<sub>2</sub>(PO<sub>4</sub>)<sub>2</sub>·10H<sub>2</sub>O | molweight = | IMAsymbol = Urc-II<ref>{{Cite journal|last=Warr|first=L.N.|date=2021|title=IMA–CNMNC approved mineral symbols|url=https://www.cambridge.org/core/journals/mineralogical-magazine/article/imacnmnc-approved-mineral-symbols/62311F45ED37831D78603C6E6B25EE0A|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|url-access=subscription}}</ref> | strunz = 8.EB.05 | system = Tetragonal | class = Ditetragonal dipyramidal (4/mmm) <br/>H-M symbol: (4/m 2/m 2/m) | symmetry = ''I4/mmm'' | unit cell = a = 7.01, c = 20.46&nbsp;[Å]; Z&nbsp;=&nbsp;2 | color = | colour = | habit = | twinning = | cleavage = | fracture = | tenacity = | mohs = | luster = | streak = | diaphaneity = | gravity = | density = | polish = | opticalprop = | refractive = | birefringence = | pleochroism = | 2V = | dispersion = | extinction = | length fast/slow = | fluorescence = | absorption = | melt = | fusibility = | diagnostic = | solubility = | impurities = | alteration = | other = 25px Radioactive | prop1 = | prop1text = | references = <ref>http://www.mindat.org/min-4105.html Mindat</ref><ref>https://www.mineralienatlas.de/lexikon/index.php/MineralData?mineral=Uranocircite-II Mineralienatlas</ref> }}

'''Uranocircite''' or '''Uranocircite-II''' is a uranium mineral with the chemical formula: Ba(UO<sub>2</sub>)<sub>2</sub>(PO<sub>4</sub>)<sub>2</sub>·10H<sub>2</sub>O. Uranocircite-I was discredited (the IMA-CMNMC published 'The New IMA List of Minerals', September 2012). It is a phosphate mineral which contains barium and is a green to yellow colour. It has a Mohs hardness of about 2.

The "circ" in the name uranocircite is from the ancient Greek word for "falcon", because it was discovered in Falkenstein, Germany. Uranocircite contains about 45% uranium, and is mainly mined in Bergen in Saxony, Germany.

==References== {{reflist}} *[https://webmineral.com/data/Uranocircite.shtml Webmineral data]

Category:Uranium(VI) minerals Category:Phosphate minerals Category:Tetragonal minerals Category:Minerals in space group 139

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