Tetra-auricupride (original) (raw)
A valid IMA mineral species
About Tetra-auricuprideHide
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Specific Gravity:
14.67 (Calculated)
Crystal System:
Tetragonal
Name:
The name is derived from the tetragonal crystal system and compositional similarity to auricupride.
Unique IdentifiersHide
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Long-form identifier:
mindat:1:1:3920:4
e8b2a8f0-f5fa-4a82-b96d-402224a9ac13
IMA Classification of Tetra-auricuprideHide
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Type description reference:
Classification of Tetra-auricuprideHide
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1.AA.10b
1 : ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)
A : Metals and Intermetallic Alloys
A : Copper-cupalite family
1.1.2.2
1 : NATIVE ELEMENTS AND ALLOYS
1 : Metals, other than the Platinum Group
1.7
1 : Elements and Alloys (including the arsenides, antimonides and bismuthides of Cu, Ag and Au)
Mineral SymbolsHide
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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.
| Symbol | Source | Reference |
|---|---|---|
| Taur | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
| Tau | 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 Tetra-auricuprideHide
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Hardness:
VHN20=294 kg/mm2 - Vickers
Density:
14.67 g/cm3 (Calculated)
Optical Data of Tetra-auricuprideHide
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Anisotropism:
Weak, with colors from gray to light gray
Reflectivity:
| Wavelength | R |
|---|---|
| 405nm | 44.6% |
| 436nm | 46.8% |
| 480nm | 50.3% |
| 526nm | 55.8% |
| 546nm | 61.2% |
| 578nm | 74.4% |
| 589nm | 76.6% |
| 622nm | 83.6% |
| 644nm | 84.9% |
| 656nm | 85.4% |
| 664nm | 86.6% |
| 700nm | 91.3% |
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 91.3%.
Colour in reflected light:
Copper-red with a yellow tint
Chemistry of Tetra-auricuprideHide
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Crystallography of Tetra-auricuprideHide
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Crystal System:
Tetragonal
Class (H-M):
4/m m m _(_4/_m_2/_m_2/m ) - Ditetragonal Dipyramidal
Cell Parameters:
a = 2.800 Å, c = 3.670 Å
Unit Cell V:
28.77 ų (Calculated from Unit Cell)
Comment:
Space Group: C4/mmm.?
X-Ray Powder DiffractionHide
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Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 2.24 Å | (100) |
| 1.195 Å | (100) |
| 0.797 Å | (90b) |
| 0.877 Å | (70b) |
| 1.125 Å | (60b) |
| 0.832 Å | (60) |
| 1.99 Å | (50) |
Geological EnvironmentHide
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Type Occurrence of Tetra-auricuprideHide
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Place of Conservation of Type Material:
Geological Museum, Ministry of Geology, Beijing, China
Reference:
Chen Keqiao, Yu Tinggao, Zhang Yongge, and Peng Zhizhong (1982): Tetra-auricupride, CuAu, discovered in China. Scientia Geologica Sinica: 1982(1): 111-116.
Synonyms of Tetra-auricuprideHide
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Other Language Names for Tetra-auricuprideHide
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Varieties of Tetra-auricuprideHide
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Common AssociatesHide
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Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat GroupingHide
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Other InformationHide
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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 Tetra-auricuprideHide
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References for Tetra-auricuprideHide
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Reference List:
Bjerkelund, E., Pearson, William B., Selte, Kari, Kjekshus, A., Hagen, G. (1967) Lattice Parameters of the CuAu(I) Phase. Acta Chemica Scandinavica, 21. 2900-2902 doi:10.3891/acta.chem.scand.21-2900
Dunn, P. J., Fleischer, M., Chao, G. Y., Cabri, L. J., Mandarino, J. A. (1983) New mineral names. American Mineralogist, 68 (11-12) 1248-1252
Localities for Tetra-auricuprideHide
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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
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- 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.