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Auriacusite

This page kindly sponsored by John Dagenais
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About AuriacusiteHide

Formula:
Fe3+Cu2+(AsO4)O
Colour:
ochreous yellow
Lustre:
Silky
Hardness:
3
Specific Gravity:
4.447 (Calculated)
Crystal System:
Orthorhombic
Member of:
Name:
The name is derived from the Latin auri (golden yellow) and acus (needle), in reference to its colour and crystal morphology.
Isostructural with:

Classification of AuriacusiteHide

Approved
Approval Year:
2009
8.BB.30

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

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

Physical Properties of AuriacusiteHide

Silky
Transparency:
Transparent
Colour:
ochreous yellow
Streak:
brownish yellow
Hardness:
Hardness Data:
Estimated
Tenacity:
Brittle
Fracture:
Irregular/Uneven
Density:
4.447 g/cm3 (Calculated)

Optical Data of AuriacusiteHide

Type:
Biaxial (+)
RI values:
nα = 1.830(5) nβ = 1.865(5) nγ = 1.910(5)
2V:
Measured: 83° (3), Calculated: 84.6°
Max Birefringence:
δ = 0.080
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
Pleochroism:
Non-pleochroic

Chemical Properties of AuriacusiteHide

Formula:
Fe3+Cu2+(AsO4)O

Crystallography of AuriacusiteHide

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Pnnm
Cell Parameters:
a = 8.6235(7) Å, b = 8.275(7) Å, c = 5.9501(5) Å
Ratio:
a:b:c = 1.042 : 1 : 0.719
Unit Cell V:
424.63 ų
Z:
4

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
5.996 (44)
4.884 (100)
4.218 (69)
2.991 (92)
2.669 (74)
2.476 (85)
2.416 (83)
1.582 (54)

Type Occurrence of AuriacusiteHide

Synonyms of AuriacusiteHide

Relationship of Auriacusite to other SpeciesHide

Member of:
Other Members of this group:
AdamiteZn2(AsO4)(OH)Orth. mmm (2/m 2/m 2/m) : Pnnm
EveiteMn2+2(AsO4)(OH)Orth. mmm (2/m 2/m 2/m) : Pnnm
LibetheniteCu2(PO4)(OH)Orth. mmm (2/m 2/m 2/m) : Pnnm
OliveniteCu2(AsO4)(OH)Mon. 2/m : P21/m
Unnamed (Sb-analogue of Auriacusite)Fe3+Cu2+(Sb,AsO4)O
ZincolibetheniteCuZn(PO4)(OH)Orth. mmm (2/m 2/m 2/m) : Pnnm
ZincoliveniteCuZn(AsO4)(OH)Orth. mmm (2/m 2/m 2/m) : Pnnm

Common AssociatesHide

Associated Minerals Based on Photo Data:
Quartz1 photo of Auriacusite associated with Quartz on mindat.org.
Malachite1 photo of Auriacusite associated with Malachite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

8.BB.XArsenowagneriteMg2(AsO4)FMon. 2/m : P21/b
8.BB.05AmblygoniteLiAl(PO4)FTric. 1 : P1
8.BB.05MontebrasiteLiAl(PO4)(OH)Tric. 1 : P1
8.BB.05TavoriteLiFe3+(PO4)(OH)Tric. 1 : P1
8.BB.10Triplite(Mn2+,Fe2+)2(PO4)(F,OH)Mon. 2/m
8.BB.10Zwieselite(Fe2+,Mn2+)2(PO4)FMon. 2/m : P21/b
8.BB.15SarkiniteMn2+2(AsO4)(OH)Mon. 2/m : P2/m
8.BB.15Triploidite(Mn2+,Fe2+)2(PO4)(OH)Mon. 2/m : P2/b
8.BB.15Wagnerite(Mg,Fe2+)2(PO4)FMon. 2/m : P21/b
8.BB.15Wolfeite(Fe2+,Mn2+)2(PO4)(OH)Mon. 2/m : P21/b
8.BB.15Stanĕkite(Mn2+,Fe2+,Mg)Fe3+(PO4)OMon.
8.BB.15JoosteiteMn2+(Mn3+,Fe3+)(PO4)OMon. 2/m
8.BB.15HydroxylwagneriteMg2(PO4)(OH)Mon. 2/m : P21/b
8.BB.20HoltedahliteMg2(PO4)(OH)Trig. 3m : P3 1m
8.BB.20Satterlyite(Fe2+,Mg,Fe)12(PO4)5(PO3OH)(OH,O)6Trig. 3m (3 2/m) : P3 1m
8.BB.25AlthausiteMg4(PO4)2(OH,O)(F,☐)Orth. mmm (2/m 2/m 2/m) : Pnma
8.BB.30AdamiteZn2(AsO4)(OH)Orth. mmm (2/m 2/m 2/m) : Pnnm
8.BB.30EveiteMn2+2(AsO4)(OH)Orth. mmm (2/m 2/m 2/m) : Pnnm
8.BB.30LibetheniteCu2(PO4)(OH)Orth. mmm (2/m 2/m 2/m) : Pnnm
8.BB.30OliveniteCu2(AsO4)(OH)Mon. 2/m : P21/m
8.BB.30ZincolibetheniteCuZn(PO4)(OH)Orth. mmm (2/m 2/m 2/m) : Pnnm
8.BB.30ZincoliveniteCuZn(AsO4)(OH)Orth. mmm (2/m 2/m 2/m) : Pnnm
8.BB.35ParadamiteZn2(AsO4)(OH)Tric. 1 : P1
8.BB.35TarbuttiteZn2(PO4)(OH)Tric. 1 : P1
8.BB.40BarbosaliteFe2+Fe3+2(PO4)2(OH)2Mon. 2/m : P21/b
8.BB.40HentscheliteCuFe3+2(PO4)2(OH)2Mon.
8.BB.40LazuliteMgAl2(PO4)2(OH)2Mon. 2/m : P21/b
8.BB.40ScorzaliteFe2+Al2(PO4)2(OH)2Mon. 2/m : P21/b
8.BB.40WilhelmkleiniteZnFe3+2(AsO4)2(OH)2Mon.
8.BB.45TrolleiteAl4(PO4)3(OH)3Mon. 2/m : B2/b
8.BB.50NamibiteCu(BiO)2(VO4)(OH)Tric. 1 : P1
8.BB.55Phosphoellenbergerite(Mg,◻)2Mg12(PO4,PO3OH)6(PO3OH,CO3)2(OH)6Hex.
8.BB.60UrusoviteCuAl(AsO4)OMon.
8.BB.65TheoparacelsiteCu3(As2O7)(OH)2Orth.
8.BB.70TuraniteCu5(VO4)2(OH)4Tric. 1 : P1
8.BB.75StoiberiteCu5(VO4)2O2Mon.
8.BB.80FingeriteCu11(VO4)6O2Tric. 1 : P1
8.BB.85AverieviteCu6(VO4)2O2Cl2Trig.
8.BB.90LipscombiteFe2+Fe3+2(PO4)2(OH)2Tet.
8.BB.90RichelliteCaFe3+2(PO4)2(OH,F)2Amor.
8.BB.90ZinclipscombiteZnFe3+2(PO4)2(OH)2Tet. 4 2 2 : P43 21 2

Related Minerals - Dana Grouping (8th Ed.)Hide

41.6.5.1AlthausiteMg4(PO4)2(OH,O)(F,☐)Orth. mmm (2/m 2/m 2/m) : Pnma
41.6.5.6ZincoliveniteCuZn(AsO4)(OH)Orth. mmm (2/m 2/m 2/m) : Pnnm

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 AuriacusiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
IMA Approvals - August 2009
Mills, S. J., Kampf, A. R., Raudsepp, M. & Poirier, G. (2009) New Fe-bearing members of the olivenite group from the Black Pine mine, Montana, Geological Society of America Abstracts with Programs, 41(7), 100.
Mills, S. J., Kampf, A. R., Poirier, G., Raudsepp, M. & Steele, I. 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(1-2), 113–120.

Internet Links for AuriacusiteHide

Localities for AuriacusiteHide

ⓘ - 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.
France
 
  • Grand Est
    • Vosges
      • Val-d'Ajol
        • Faymont
          • Les Roches valley area (Bois de la Vèche area)
Chollet Pascal Collection - SEM-EDS by Jean-Marc Henot at "Laboratoire magmas et volcans", Clermont-Ferrand, France
Greece
 
  • Attikí Prefecture (Attica; Attika)
    • Lavrion District (Laurion; Laurium; Lavreotiki Municipality)
      • Lavrion District Mines
        • Agios Konstantinos [St Constantine] (Kamariza)
          • Kamariza Mines (Kamareza Mines)
Rieck, B., Kolitsch, U., Voudouris, P., Giester, G. and Tzeferis, P. (2018): Weitere Neufunde aus Lavrion, Griechenland. Mineralien-Welt 29 (5), 32-77 (in German).
Spain
 
  • Andalusia
    • Almería
      • Huércal-Overa
        • Cuesta Alta
          • Cerro Minado Mines
FAVREAU et al. (2013)
UK
 
  • England
    • Cornwall
      • Perranzabuloe
        • Perranporth
Stuart Mills (Museum Victoria) & Nicolas Meisser (Lausanne); Weiß, S., Merry, M. & Ansermet, S. (2017): Neufunde aus Cornwall: Cannonit, Arthurit, Auriacusit. Lapis, 42 (1), 20-23; 62 (in German).
USA (TL)
 
  • Montana
    • Granite Co.
      • Philipsburg District (Flint Creek District)
        • John Long Mts
          • Black Pine Ridge
IMA Approvals - August 2009; Gobla, M. J. (2012) Montana Mineral Locality Index. Rocks and Minerals 87:208-240.
Mineral and/or Locality  
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