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Auricupride

A valid IMA mineral species - grandfathered
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About AuricuprideHide

Formula:
Cu3Au
Colour:
Yellow with a reddish tint; in reflected light, violet-rose
Lustre:
Metallic
Hardness:
Specific Gravity:
11.5
Crystal System:
Isometric
Name:
Named after its chemical composition, being a natural alloy of Gold (Latin: aurum) and Copper (Latin: cuprum)
Dimorph of:

Unique IdentifiersHide

Mindat ID:
423
Long-form identifier:
mindat:1:1:423:3
GUID
(UUID V4):
263491bd-f954-40d2-b058-3cd1cc79785f

IMA Classification of AuricuprideHide

Approved, 'Grandfathered' (first described prior to 1959)

Classification of AuricuprideHide

1.AA.10a

1 : ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)
A : Metals and Intermetallic Alloys
A : Copper-cupalite family
Dana 7th ed.:
1.1.2.1
1.1.2.1

1 : NATIVE ELEMENTS AND ALLOYS
1 : Metals, other than the Platinum Group
1.6

1 : Elements and Alloys (including the arsenides, antimonides and bismuthides of Cu, Ag and Au)

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.

SymbolSourceReference
AucIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43
AurThe Canadian Mineralogist (2019)The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download

Physical Properties of AuricuprideHide

Metallic
Transparency:
Opaque
Colour:
Yellow with a reddish tint; in reflected light, violet-rose
Hardness:
3½ on Mohs scale
Hardness:
VHN10=54 kg/mm2 - Vickers
Density:
11.5 g/cm3 (Measured)    13.77 g/cm3 (Calculated)

Chemistry of AuricuprideHide

Mindat Formula:
Cu3Au

Crystallography of AuricuprideHide

Crystal System:
Isometric
Class (H-M):
m3m (4/m 3 2/m) - Hexoctahedral
Space Group:
Pm3m
Setting:
Pm3m
Cell Parameters:
a = 3.753(5) Å
Unit Cell V:
52.86 ų (Calculated from Unit Cell)
Z:
1
Morphology:
Massive, rims, irregular patches.

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0011894AuricuprideMegaw H D (1973) Copper-gold alloy, Cu3Au Crystal Structures 1973 89-9019730293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
- Å()
Comments:
PXRD were not determined.

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
High-𝑇 alteration and/or metamorphism
33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12])
Stage 5: Initiation of plate tectonics<3.5-2.5
38 : Ophiolites
Geological Setting:
Serpentinites

Type Occurrence of AuricuprideHide

General Appearance of Type Material:
Massive, as rims less than 100 ”m, irregular patches, and platy aggregations.
Reference:
Ramdohr, P. (1950) Neue erzmineralien. Fortschritte der Mineralogie: 28: 69-70.

Other Language Names for AuricuprideHide

Varieties of AuricuprideHide

ArgentocuproaurideUnnecessary name for an Argentian Cuproauride
RozhkoviteA palladian variety of Auricupride.

Relationship of Auricupride to other SpeciesHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
4 photos of Auricupride associated with GoldAu
1 photo of Auricupride associated with QuartzSiO2
1 photo of Auricupride associated with ArsenopyriteFeAsS

Related Minerals - Strunz-mindat GroupingHide

1.AA.05AluminiumAlIso. m3m (4/m 3 2/m) : Fm3m
1.AA.05CopperCuIso. m3m (4/m 3 2/m) : Fm3m
1.AA.05GoldAuIso. m3m (4/m 3 2/m) : Fm3m
1.AA.05LeadPbIso. m3m (4/m 3 2/m) : Fm3m
1.AA.05NickelNiIso. m3m (4/m 3 2/m) : Fm3m
1.AA.05SilverAgIso. m3m (4/m 3 2/m) : Fm3m
1.AA.05UM2004-08-E:AuCuPdCu2PdAu
1.AA.05UM1991-06-E:AuCuAu3Cu
1.AA.05Copper Group
1.AA.05SteinhardtiteAl0.38Ni0.32Fe0.30Iso. m3m (4/m 3 2/m) : Im3m
1.AA.05aAuricupride Subgroup
1.AA.10bTetra-auricuprideAuCuTet. 4/mmm (4/m 2/m 2/m) : P4/mmm
1.AA.10aCuproaurideCu3Au
1.AA.10Nickel Group
1.AA.15AnyuiiteAuPb2Tet. 4/mmm (4/m 2/m 2/m) : I4/mcm
1.AA.15Khatyrkite(Cu,Zn)Al2Tet. 4/mmm (4/m 2/m 2/m) : I4/mcm
1.AA.15NovodnepriteAuPb3Tet. 4 2m : I4 2m
1.AA.15UM1985-02-E:AlZn(Zn,Cu)Al2
1.AA.20Cupalite(Cu,Zn)AlOrth.
1.AA.25HunchuniteAu2PbIso. m3m (4/m 3 2/m)
1.AA.30StolperiteAlCuIso. m3m (4/m 3 2/m) : Pm3m
1.AA.35HollisteriteAl3FeMon. 2/m : B2/m
1.AA.40IcosahedriteAl63Cu24Fe13Icos. 5 3m : Fm 3 5
1.AA.45Kryachkoite(Al,Cu)6(Fe,Cu)Orth. mm2 : Cmc21
1.AA.50ProxidecagoniteAl34Ni9Fe2Orth. mmm (2/m 2/m 2/m) : Pnma

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.

Internet Links for AuricuprideHide

References for AuricuprideHide

Localities for AuricuprideHide

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 references and 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 (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Argentina
 
  • Salta Province
    • Guachipas Department
      • Alemania
Australia
 
  • Tasmania
    • West Coast municipality
      • Rosebery district
Brazil
 
  • Minas Gerais
    • Catas Altas
Canada
 
  • Ontario
    • Timiskaming District
      • McGarry Township
Chile
 
  • Coquimbo
    • Elqui Province
Cyprus
 
  • Limassol District
  • Nicosia District
Czech Republic
 
  • Vysočina Region
    • ĆœÄĂĄr nad SĂĄzavou District
      • Ć těpĂĄnov nad Svratkou
Georgia
 
  • Racha-Lechkhumi and Kvemo Svaneti
    • Svaneti District
Greece
 
  • Central Greece
    • Euboea
      • Skyros
  • Thessaly
    • Trikala
      • Meteora
Greenland
 
  • Sermersooq
Kazakhstan
 
  • Akmola Region
Portugal
 
  • Portalegre
    • Alter do ChĂŁo
Romania
 
  • Mehedinti County
    • Breznița-Ocol
  • VĂąlcea County
Russia
 
  • Arkhangelsk Oblast
    • Franz Josef Land
  • Chelyabinsk Oblast
    • Karabash
      • Karabash ophiolite massif
        • Soimon Valley
  • Irkutsk Oblast
    • Uda–Biryusa district
  • Kamchatka Krai
    • Ust-Kamchatsky District
  • Krasnoyarsk Krai
    • Taymyrskiy Autonomous Okrug
      • Taimyr Peninsula
        • Putoran Plateau
          • Noril'sk
  • Murmansk Oblast
    • Olenegorsk
  • Primorsky Krai
    • Olginsky District
  • Republic of Karelia
    • Medvezhyegorsky District
      • Zaonezhie peninsula
  • Tuva
    • Kaa-Khemsky District
      • Kaakhem ophiolite belt
    • Tes-Khemsky District
  • Yamalo-Nenets Autonomous Okrug
    • Labytnangi
South Africa
 
  • Eastern Cape
    • Alfred Nzo District Municipality
      • Umzimvubu Local Municipality
        • Insizwa
  • Limpopo
    • Sekhukhune District Municipality
      • Fetakgomo Tubatse Local Municipality
        • Burgersfort
    • Waterberg District Municipality
      • Mogalakwena Local Municipality
        • Mogalakwena
          • Mokopane
Switzerland
 
  • Aargau
    • Rheinfelden
Tanzania
 
  • Kigoma Region
 
Mineral and/or Locality  
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