{{Infobox mineral | name = Moolooite | image = Moolooite-91983.jpg | imagesize = 260px | caption = Blue massive moolooite (field of view 12 mm) | category = Oxalate mineral | formula = {{chem2|Cu(C2O4) · 0.4H2O}} | IMAsymbol = Moo<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 = 10.AB.15 | system = Orthorhombic | class = Dipyramidal (mmm) <br/>H-M symbol: (2/m 2/m 2/m) | symmetry = ''Pnnm'' | color = green | gravity = 3.43 (calculated) | density = 2.6 | references = <ref>[https://www.mineralienatlas.de/lexikon/index.php/MineralData?mineral=Moolooite Mineralienatlas]</ref> }}
'''Moolooite''' is a rare blue-green mineral with the formula Cu(C<sub>2</sub>O<sub>4</sub>)·n(H<sub>2</sub>O) (n<1) (copper(II) oxalate hydrate). It was discovered in Bunbury Well, Mooloo Downs station, Murchison, Western Australia in 1986.<ref name=clarke-williams>{{cite journal |last1=Clarke |first1=R.M. |last2=Williams |first2=I.R.|title=Moolooite, a naturally occurring hydrated copper oxalate from Western Australia|journal=Mineralogical Magazine |volume=50 |year=1986 |pages=295–298 |url=http://rruff.geo.arizona.edu/doclib/mm/vol50/MM50_295.pdf |issue=356 |doi=10.1180/minmag.1986.050.356.15|bibcode=1986MinM...50..295C|s2cid=54527532 }}</ref> It has an orthorhombic crystalline structure, and is formed by the interaction of bird guano with weathering copper sulfides.
A second occurrence is reported from the Sainte-Marie-aux-Mines silver mining district of Vosges Mountains, France.<ref name=clarke-williams/>
==References== {{Reflist}}
Category:Copper(II) minerals Category:Oxalate minerals Category:Orthorhombic minerals Category:Minerals in space group 58 Category:Minerals described in 1986
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