Auricupride
A valid IMA mineral species - grandfathered
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About Auricupride
Formula:
Cu3Au
Colour:
Yellow with a reddish tint; in reflected light, violet-rose
Lustre:
Metallic
Hardness:
3½
Specific Gravity:
11.5
Crystal System:
Isometric
Name:
Type Locality:
Dimorph of:
Unique Identifiers
Mindat ID:
423
Long-form identifier:
mindat:1:1:423:3
Similar Names
IMA Classification of Auricupride
Approved, 'Grandfathered' (first described prior to 1959)
Type description reference:
Classification of Auricupride
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
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 : 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)
1 : Elements and Alloys (including the arsenides, antimonides and bismuthides of Cu, Ag and Au)
Mineral Symbols
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.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Auc | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
| Aur | The 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 Auricupride
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 Auricupride
Mindat Formula:
Cu3Au
Element Weights:
| Element | % weight |
|---|---|
| Cu | 49.184 % |
Calculated from ideal end-member formula.
Elements listed:
Crystallography of Auricupride
Crystal System:
Isometric
Class (H-M):
m3m(4/m32/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 Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0011894 | Auricupride | Megaw H D (1973) Copper-gold alloy, Cu3Au Crystal Structures 1973 89-90 | 1973 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| - Å | () |
Comments:
PXRD were not determined.
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| High-? 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 Auricupride
General Appearance of Type Material:
Massive, as rims less than 100 µm, irregular patches, and platy aggregations.
Other Language Names for Auricupride
Varieties of Auricupride
| Argentocuproauride | Unnecessary name for an Argentian Cuproauride |
| Rozhkovite | A palladian variety of Auricupride. |
Relationship of Auricupride to other Species
Other Members of Auricupride Subgroup:
| Cuproauride | Cu3Au | |
| Olgafrankite | Ni3Ge | Iso. m3m(4/m32/m) : Pm3m |
Common Associates
Associations Based on Photo Data:
| 4 photos of Auricupride associated with Native Gold | Au |
| 1 photo of Auricupride associated with Quartz | SiO2 |
| 1 photo of Auricupride associated with Arsenopyrite | FeAsS |
Related Minerals - Strunz-mindat Grouping
| 1.AA. | Jonlarsenite | Al4Cu9 |
| 1.AA. | Pratesiite | AgCuTe2 |
| 1.AA.05 | Native Lead | Pb |
| 1.AA.05a | Auricupride Subgroup | |
| 1.AA.05 | Native Nickel | Ni |
| 1.AA.05 | Native Silver | Ag |
| 1.AA.05 | 'UM2004-08-E:AuCuPd' | Cu2PdAu |
| 1.AA.05 | 'UM1991-06-E:AuCu' | Au3Cu |
| 1.AA.05 | Native Aluminium | Al |
| 1.AA.05 | Steinhardtite | Al0.38Ni0.32Fe0.30 |
| 1.AA.05 | Native Gold | Au |
| 1.AA.05 | Native Copper | Cu |
| 1.AA.05 | Copper Group | |
| 1.AA.10a | Cuproauride | Cu3Au |
| 1.AA.10b | Tetra-auricupride | AuCu |
| 1.AA.10 | Nickel Group | |
| 1.AA.15 | Anyuiite | AuPb2 |
| 1.AA.15 | Novodneprite | AuPb3 |
| 1.AA.15 | 'UM1985-02-E:AlZn' | (Zn,Cu)Al2 |
| 1.AA.15 | Khatyrkite | (Cu,Zn)Al2 |
| 1.AA.20 | Cupalite | (Cu,Zn)Al |
| 1.AA.25 | Hunchunite | Au2Pb |
| 1.AA.30 | Stolperite | AlCu |
| 1.AA.35 | Hollisterite | Al3Fe |
| 1.AA.40 | Icosahedrite | Al63Cu24Fe13 |
| 1.AA.45 | Kryachkoite | (Al,Cu)6(Fe,Cu) |
| 1.AA.50 | Proxidecagonite | Al34Ni9Fe2 |
Other Information
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 Auricupride
mindat.org URL:
https://www.mindat.org/min-423.html
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References for Auricupride
Localities for Auricupride
Showing 46 localities.
symbol to view information about a locality.
The Locality List
- 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).
All localities listed without proper references should be considered as questionable.
Argentina | |
| Sureda |
| Perelló et al. (2023) |
Australia | |
| Bottrill et al. (2008) |
Brazil | |
| Cabral et al. (2014) |
Canada | |
| Knipe et al. (1997) |
Chile | |
| extraLapis no.2 |
China | |
| Liu et al. (2024) |
Cyprus | |
| Mineralogical Society of America - ... |
| Mineralogical Society of America - ... |
Czech Republic | |
| Velebil +5 other references |
Georgia | |
| Kekelia et al. (2017) |
Greece | |
| Tarkian et al. (1992) |
| Kapsiotis et al. (2010) |
Greenland | |
| Nielsen et al. (2015) |
| Rudashevsky et al. (2023) | |
Kazakhstan | |
| Dyussembayeva et al. (2013) |
Portugal | |
| Dias et al. (2006) |
Romania | |
| Udubaªa et al. (2006) |
| Udubaªa et al. (2006) |
Russia | |
| Sklyarov et al. (2016) +1 other reference |
| Sklyarov et al. (2016) | |
| Kovalev et al. (2017) |
| Michurin et al. (2024) |
| Pekov (1998) |
| [var: Rozhkovite] Pekov (1998) +2 other references | |
| Shvedov et al. (2017) +1 other reference |
| Kutyrev et al. (2023) |
| Sandimirova et al. (2014) +1 other reference | |
| Yurichev et al. (2017) +1 other reference |
| Fleischer et al. (1977) |
| Mineralogical Society of America - ... | |
| Kalugin et al. (2021) | |
| Bazai et al. (2009) |
| Bazai et al. (2009) | |
| Kazachenko et al. (2013) |
| Chernikov et al. (2007) |
| Murzin et al. (2009) |
| Palyanova et al. (2018) |
| Murzin et al. (2022) |
South Africa | |
| extraLapis no. 2 |
| extraLapis 2:43 |
| Holwell et al. (2006) +1 other reference |
Switzerland | |
| Beda Hofmann (1986) |
| Stalder et al. (1998) | |
Tanzania | |
| Wilhelmij et al. (2016) |
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Zolotaya Gora Au deposit, Soimon Valley, Karabash ophiolite massif, Karabash, Chelyabinsk Oblast, Russia