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Auriacusite

A valid IMA mineral species
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The name is derived from the Latinauri (golden yellow) andacus (needle), in reference to its colour and crystal morphology.
Type Locality:
ⓘBlack Pine Mine, Philipsburg Mining District (Flint Creek Mining District), Granite County, Montana, USA
Isostructural with:
Olivenite
Fe3+-O-analogue ofzincolivenite.

See alsoUnnamed (Sb-analogue of Auriacusite) andmagganasite.


Unique Identifiers
Approval year:
2009
First published:
2010
Type description reference:
Mills, Stuart J., Kampf, Anthony R., Poirier, Glenn, Raudsepp, Mati, Steele, Ian M. (2010) Auriacusite, Fe3+Cu2+AsO4O, the first M3+ member of the olivenite group, from the Black Pine mine, Montana, USA.Mineralogy and Petrology, 99 (1) 113-120doi:10.1007/s00710-009-0089-7

Classification of Auriacusite

8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
B : With only medium-sized cations, (OH, etc.):RO4 about 1:1
Dana 8th ed.:
41.6.5.7

41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
6 : A2(XO4)Zq

Mineral Symbols
Transparency:
Transparent
Colour:
Ochreous yellow
Streak:
Brownish yellow
Hardness:
3 onMohs scale
Hardness Data:
Estimated
Tenacity:
Brittle
Fracture:
Irregular/Uneven
Density:
4.447 g/cm3 (Calculated)

Optical Data of Auriacusite
Surface Relief:
Moderate
Pleochroism:
Non-pleochroic

Chemistry of Auriacusite

Crystallography of Auriacusite
General Appearance of Type Material:
Brownish golden-yellow fibrous needles up to 5x100 µm, lining quartz vughs and coating quartz crystals.
Place of Conservation of Type Material:
Natural History Museum of Los Angeles County and Canadian Museum of Nature
Geological Setting of Type Material:
Hydrothermal polymetallic deposit
Associated Minerals at Type Locality:
BrochantiteMalachitePyriteQuartzSegnitite
Tetrahedrite Subgroup
Reference:
Mills, Stuart J., Kampf, Anthony R., Poirier, Glenn, Raudsepp, Mati, Steele, Ian M. (2010) Auriacusite, Fe3+Cu2+AsO4O, the first M3+ member of the olivenite group, from the Black Pine mine, Montana, USA.Mineralogy and Petrology, 99 (1) 113-120doi:10.1007/s00710-009-0089-7

Synonyms of Auriacusite

Other Language Names for Auriacusite

Relationship of Auriacusite to other Species
Other Members of Olivenite Group:
AdamiteZn2(AsO4)(OH)Orth.mmm(2/m2/m2/m) :Pnnm
EveiteMn2+2(AsO4)(OH)Orth.mmm(2/m2/m2/m) :Pnnm
LibetheniteCu2(PO4)(OH)Orth.mmm(2/m2/m2/m) :Pnnm
OliveniteCu2(AsO4)(OH)Mon. 2/m :P21/m
Unnamed (Sb-analogue of Auriacusite)Fe3+Cu2+[(Sb,As)O4]O
ZincolibetheniteCuZn(PO4)(OH)Orth.mmm(2/m2/m2/m) :Pnnm
ZincoliveniteCuZn(AsO4)(OH)Orth.mmm(2/m2/m2/m) :Pnnm

Common AssociatesOrth.mmm(2/m2/m2/m) :Pnma8.BB.TilasiteCaMg(AsO4)FMon.8.BB.PaulgrothiteCu9Fe3+O4(PO4)4Cl3Orth.mm2 :Cmc218.BB.KarlditmariteCu9O4(PO4)2(SO4)2Tric.1 :P18.BB.MilkovoiteCu4O(PO4)(AsO4)Orth.mmm(2/m2/m2/m) :Pnma8.BB.XArsenowagneriteMg2(AsO4)FMon. 2/m :P21/b8.BB.05TavoriteLiFe3+(PO4)(OH)Tric.1 :P18.BB.05AmblygoniteLiAl(PO4)FTric.1 :P18.BB.05MontebrasiteLiAl(PO4)(OH)Tric.1 :P18.BB.10ZwieseliteFe2+2(PO4)FMon. 2/m :P21/b8.BB.10TripliteMn2+2(PO4)FMon. 2/m8.BB.15Unnamed (Sb-analogue of Auriacusite)Fe3+Cu2+[(Sb,As)O4]O8.BB.15JoosteiteMn2+(Mn3+,Fe3+)(PO4)OMon. 2/m8.BB.15HydroxylwagneriteMg2(PO4)(OH)Mon. 2/m :P21/b8.BB.15WagneriteMg2(PO4)FMon. 2/m :P21/b8.BB.15Stanĕkite(Mn2+,Fe2+,Mg)Fe3+(PO4)OMon. 2/m :P21/b8.BB.15TriploiditeMn2+2(PO4)(OH)Mon. 2/m :P2/b8.BB.15SarkiniteMn2+2(AsO4)(OH)Mon. 2/m :P21/b8.BB.15WolfeiteFe2+2(PO4)(OH)Mon. 2/m :P21/b8.BB.20HoltedahliteMg2(PO4)(OH)Trig. 3m :P31m8.BB.20Satterlyite(Fe2+,Mg,Fe)12(PO4)5(PO3OH)(OH,O)6Trig.3m(32/m) :P31m8.BB.25AlthausiteMg4(PO4)2(OH,O)(F,◻)Orth.mmm(2/m2/m2/m) :Pnma8.BB.30ZincoliveniteCuZn(AsO4)(OH)Orth.mmm(2/m2/m2/m) :Pnnm8.BB.30AdamiteZn2(AsO4)(OH)Orth.mmm(2/m2/m2/m) :Pnnm8.BB.30LibetheniteCu2(PO4)(OH)Orth.mmm(2/m2/m2/m) :Pnnm8.BB.30ZincolibetheniteCuZn(PO4)(OH)Orth.mmm(2/m2/m2/m) :Pnnm8.BB.30EveiteMn2+2(AsO4)(OH)Orth.mmm(2/m2/m2/m) :Pnnm8.BB.30OliveniteCu2(AsO4)(OH)Mon. 2/m :P21/m8.BB.35ParadamiteZn2(AsO4)(OH)Tric.1 :P18.BB.35TarbuttiteZn2(PO4)(OH)Tric.1 :P18.BB.40BarbosaliteFe2+Fe3+2(PO4)2(OH)2Mon. 2/m :P21/b8.BB.40ScorzaliteFe2+Al2(PO4)2(OH)2Mon. 2/m :P21/b8.BB.40LazuliteMgAl2(PO4)2(OH)2Mon. 2/m :P21/b8.BB.40MeizhouiteFe2+V3+2(PO4)2(OH)2Mon. 2/m :P21/b8.BB.40HentscheliteCuFe3+2(PO4)2(OH)2Mon. 2/m :P21/m8.BB.40WilhelmkleiniteZnFe3+2(AsO4)2(OH)2Mon. 2/m :P21/m8.BB.45DokuchaeviteCu8O2(VO4)3Cl3Tric.1 :P18.BB.45TrolleiteAl4(PO4)3(OH)3Mon. 2/m :B2/b8.BB.45YaroshevskiteCu9O2(VO4)4Cl2Tric.1 :P18.BB.50NamibiteCu(BiO)2(VO4)(OH)Tric.1 :P18.BB.50Aleutite[Cu5O2](AsO4)(VO4) · (Cu,K,Pb,Rb,Cs,)ClMon. 2/m :B2/m8.BB.52aEriclaxmaniteCu4O(AsO4)2Tric.1 :P18.BB.52bKozyrevskiteCu4O(AsO4)2Orth.mmm(2/m2/m2/m) :Pnma8.BB.55Phosphoellenbergerite(Mg,◻)2Mg12(PO4,PO3OH)6(PO3OH,CO3)2(OH)6Hex. 6mm :P63mc8.BB.55PopoviteCu5O2(AsO4)2Tric.1 :P18.BB.60UrusoviteCuAl(AsO4)OMon. 2/m :P21/b8.BB.65TheoparacelsiteCu3(As2O7)(OH)2Orth.mmm(2/m2/m2/m) :Pmma8.BB.70TuraniteCu5(VO4)2(OH)4Tric.1 :P18.BB.75StoiberiteCu5(VO4)2O2Mon. 2/m8.BB.80FingeriteCu11(VO4)6O2Tric.1 :P18.BB.85AverieviteCu6(VO4)2O2Cl2Trig. 3 :P38.BB.90RichelliteCaFe3+2(PO4)2(OH,F)2Amor.8.BB.90LipscombiteFe2+Fe3+2(PO4)2(OH)2Tet. 422 :P412128.BB.90ZinclipscombiteZnFe3+2(PO4)2(OH)2Tet. 422 :P43212

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    • References for AuriacusiteⓘAraba FormationAfify et al. (2022)
    France
     
    Chollet Pascal Collection - SEM-EDS by ...
    Germany
     
    Kolitsch et al. (2019)
    Greece
     
    Rieck et al. (2018)
    Italy
     
    Fernando Caboni et al. (2024)Fernando Caboni et al. (2024)//doi.org/10.57635/MICRO.2025.23.16
    Spain
     
    FAVREAU et al. (2013)Georges FAVREAU collection & EDX ...Joan Abella i Creus
    UK
     
    Stuart Mills (Museum Victoria)+1 other referenceRollinson et al. (2017)
    USA (TL)
     
    Mills et al. (2010)+1 other reference
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