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About MoolooiteHide

Cu(C2O4) · 0.4H2O
Crystal System:
Named after the type locality (Mooloo Downs Station, Australia).
Compare other Cu-bearing oxalate minerals: middlebackite, fiemmeite, wheatleyite, and antipinite.

May be a biomineral formed by the action of lichens (Acarospora rugulosa, Lecidea inops, Lecidea lactea) growing on cupriferous rocks (vide Burford et al., 2003).

Classification of MoolooiteHide


A : Salts of organic acids
B : Oxalates

1 : Oxalates

31 : Oxalates, Citrates, Mellitates and Acetates
1 : Oxalates

Optical Data of MoolooiteHide

RI values:
nα = 1.570 nγ = 1.950
Max Birefringence:
δ = 0.380
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
r > v

Chemical Properties of MoolooiteHide

Cu(C2O4) · 0.4H2O
IMA Formula:
Cu(C2O4) · nH2O
Idealised Formula:

Crystallography of MoolooiteHide

Crystal System:
Cell Parameters:
a = 5.4 Å, b = 5.57 Å, c = 2.54 Å
a:b:c = 0.969 : 1 : 0.456
Unit Cell V:
76.40 ų (Calculated from Unit Cell)

Type Occurrence of MoolooiteHide

Synonyms of MoolooiteHide

Other Language Names for MoolooiteHide


Common AssociatesHide

Associated Minerals Based on Photo Data:
9 photos of Moolooite associated with CopperCu
6 photos of Moolooite associated with HumboldtineFe2+(C2O4) · 2H2O
6 photos of Moolooite associated with AnalcimeNa(AlSi2O6) · H2O
6 photos of Moolooite associated with MalachiteCu2(CO3)(OH)2
3 photos of Moolooite associated with WhewelliteCa(C2O4) · H2O

Related Minerals - Nickel-Strunz GroupingHide

10.AB.Uroxite [(UO2)2(C2O4)(OH)2(H2O)2]·H2OMon. 2/m : P21/b
10.AB.05HumboldtineFe2+(C2O4) · 2H2OMon. 2/m
10.AB.05LindbergiteMn2+(C2O4) · 2H2OMon. 2/m
10.AB.10GlushinskiteMg(C2O4) · 2H2OMon.
10.AB.20StepanoviteNaMgFe3+(C2O4)3 · 8-9H2OTrig. 3m : P3c1
10.AB.25MinguzziteK3Fe3+(C2O4)3 · 3H2OMon. 2/m : P21/b
10.AB.30WheatleyiteNa2Cu(C2O4)2 · 2H2OTric.
10.AB.35ZhemchuzhnikoviteNaMgAl(C2O4)3 · 8H2OTrig. 3m : P3c1
10.AB.40WeddelliteCa(C2O4) · (2.5-x)H2OTet. 4/m : I4/m
10.AB.45WhewelliteCa(C2O4) · H2OMon. 2/m : P21/b
10.AB.50CaoxiteCa(C2O4) · 3H2OTric.
10.AB.55Oxammite(NH4)2(C2O4) · H2OOrth. 2 2 2 : P21 21 2
10.AB.65Coskrenite-(Ce)(Ce,Nd,La)2(C2O4)(SO4)2 · 12H2OTric.
10.AB.70Levinsonite-(Y)(Y,Nd,La)Al(C2O4)(SO4)2 · 12H2OMon. 2/m
10.AB.75Zugshunstite-(Ce)(Ce,Nd,La)Al(C2O4)(SO4)2 · 12H2OMon.
10.AB.80NovgorodovaiteCa2(C2O4)Cl2 · 2H2OMon. 2/m

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

31.1.1Oxammite(NH4)2(C2O4) · H2OOrth. 2 2 2 : P21 21 2
31.1.3WheatleyiteNa2Cu(C2O4)2 · 2H2OTric.
31.1.4GlushinskiteMg(C2O4) · 2H2OMon.
31.1.5WhewelliteCa(C2O4) · H2OMon. 2/m : P21/b
31.1.6WeddelliteCa(C2O4) · (2.5-x)H2OTet. 4/m : I4/m
31.1.7HumboldtineFe2+(C2O4) · 2H2OMon. 2/m
31.1.8StepanoviteNaMgFe3+(C2O4)3 · 8-9H2OTrig. 3m : P3c1
31.1.9ZhemchuzhnikoviteNaMgAl(C2O4)3 · 8H2OTrig. 3m : P3c1
31.1.10MinguzziteK3Fe3+(C2O4)3 · 3H2OMon. 2/m : P21/b

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for MoolooiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Schmittler, H. (1968): Structural principle of disordered copper(II) oxalate (CuC2O4.nH2O). Monatsber. Deut. Akad. Wiss. Berlin, 10, 581-604. (in German.)
Gleizes, A., Maury, F. & Galy, J. (1980): Crystal structure and magnetism of sodium bis(oxalato)cuprate(II)dihydrate, Na2Cu(C2O4)2.2H2O. A deductive proposal for the structure of copper oxalate, CuC2O4.xH2O (O <= x <= 1). Inorg. Chem. 19, 2074-2078.
Clarke, R. M. & Williams, I. R. (1986): Moolooite, a naturally occurring hydrated copper oxalate from western Australia. Mineralogical Magazine 50, 295-298.
American Mineralogist (1987): 72: 1025-1026.
Burford, E.P., Kierans, M., Gadd, G.M. (2003): Geomycology: fungi in mineral substrata. Mycologist: 17(3): 98-107; DOI: 10.1017/S0269915X03003112

Internet Links for MoolooiteHide

Localities for MoolooiteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Australia (TL)
  • Western Australia
    • Upper Gascoyne Shire
MM 1987, 295-8
Clarke, R.M., Williams, I.R. (1986) Moolooite, a naturally occurring hydrated copper oxalate from Western Australia, Mineralogical Magazine (June 1986) Vol.50, pp295-298.
  • Grand Est
    • Haut-Rhin
      • Colmar-Ribeauvillé
Wittern, Journée: "Mineralien finden in den Vogesen", von Loga (Cologne), 1997
  • Nouvelle-Aquitaine
    • Haute-Vienne
      • Nantiat
        • Vaulry
          • Vaulry Mines
Patrice Queneau Collection
  • Baden-Württemberg
    • Freiburg
      • Ortenaukreis
        • Oberwolfach
U. Kolitsch, J. Gröbner, F. Brandstätter and R. Bayerl (2010): Neufunde aus der Grube Clara im mittleren Schwarzwald (IV): Calcioandyrobertsit, Cotunnit, Gerhardtit, Khaidarkanit, Lukrahnit, Mckinstryit, Moolooit, Rhabdophan-(La), Rouait und Uricit. Lapis 35 (9), 22-27; 62 (in German).
  • Thuringia
    • Nordhausen
      • Nordhausen
Thomas Witzke collection; J. Gröbner & J. Wesiger (2008): Die Mineralien des Kupferschieferbergbaus an südlichen Harzrand bei Ilfeld in Thüringen. Mineralien-Welt 19 (2), 18-28.
  • Piedmont
    • Verbano-Cusio-Ossola Province
      • Baceno
        • Devero Alp
Guastoni, A. (2009): Monte Cervandone. Recenti novità mineralogiche. Rivista Mineralogica Italiana 35, 38-48.
  • Trentino-Alto Adige
    • Trento Province (Trentino)
      • Carano
Demartin, F., Campostrini, I., Ferretti, P., and Rocchetti, I. (2018) Fiemmeite Cu2(C2O4)(OH)2∙2H2O, a new mineral from Val di Fiemme, Trentino, Italy. Minerals 2018, 8, 6, 248; doi:10.3390/min8060248; Ferretti, P., Campostrini, I., Dallabona, S., Demartin, F., and Rocchetti, I. (2019) La miniera di San Lugano (Carano, Val di Fiemme, TN). Rivista Mineralogica Italiana, 43, 2, 84-96.
  • Kostanay Region
    • Rudny
Leon Hupperichs collection
  • Trøndelag
    • Røyrvik
Chisholm, J. E. Jones, G.C. Purvis & O.W. (1987): Hydrated copper oxalate, moolooite, in lichens. Mineralogical Magazine, 51, 715-718
  • Balkan
    • Cheleken Peninsula
Lebedev, L.M., Nikitina, J.B. (1983): The Cheleken ore forming system. Russ. Acad. Sci., Moscow (in Russian.) [cited in Hofmann & Bernasconi, 1989].
  • Michigan
    • Keweenaw Co.
      • Ahmeek
Mineralogy of Michigan (2004) Heinrich & Robinson
  • Utah
    • Emery Co.
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