Astrocyanite-(Ce)

{{Short description|Bright blue mineral}}

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| name = Astrocyanite-(Ce)

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| image = Astrocyanite-(Ce)-571090.jpg

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| caption = Astrocyanite-(Ce) found at its type locality

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| formula = {{chem2|Cu2(Ce,Nd,La)2(UO2)(CO3)5(OH)_{2}*1.5H2O}}

|IMAsymbol=Acy-Ce{{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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| color = Blue, Bright blue, Blue green

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| gravity = 3.8

| density = 3.8

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| other = 25px Radioactive

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Astrocyanite-(Ce) is a bright blue mineral with the chemical formula {{chem2|Cu2(Ce,Nd,La)2(UO2)(CO3)5(OH)_{2}*1.5H2O}}. Its type locality is Kamoto East Open Cut, Kamoto, Kolwezi, Lualaba, Congo

The name of this mineral comes from the {{langx|grc|άστρον}} ("{{Transliteration|grc|italic=no|astron}}") for "star", {{lang|grc|κυανός}} ("{{Transliteration|grc|italic=no|kyanos}}") for "blue", in allusion to its colour and habit of the aggregates, and the dominant lanthanide element in its composition.