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Tetra-auricupride Mineral Data
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General Tetra-auricupride Information
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 Chemical Formula: |
AuCu |
| Composition: |
Molecular Weight = 260.51 gm |
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Copper 24.39 % Cu |
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Gold 75.61 % Au |
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______ |
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100.00 % |
| Empirical Formula: |
AuCu |
| Environment: |
In mafic to ultrabasic serpentinites which contain platinum group metals. |
| IMA Status: |
Approved IMA 1982 |
| Locality: |
Sardala, Xinjiang, China. Link to MinDat.org Location Data. |
| Name Origin: |
Named after its crystal symmetry and Au, Cu content. |
| Synonym: |
ICSD 42574 |
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PDF 25-1220 |
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Tetra-auricupride Image |
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Images:
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Tetra-auricupride Crystallography
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| Axial Ratios: |
a:c = 1:0.92676 |
| Cell Dimensions: |
a = 3.96, c = 3.67, Z = 2; V = 57.55 Den(Calc)= 15.03 |
| Crystal System: |
Tetragonal - Ditetragonal Dipyramidal H-M Symbol (4/m 2/m 2/m) Space Group: P 4/mmm |
| X Ray Diffraction: |
By Intensity(I/Io): 1.195(1), 2.24(1), 0.797(0.9), |
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Physical Properties of Tetra-auricupride
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| Cleavage: |
None |
| Color: |
Golden yellow. |
| Density: |
15.03 |
| Diaphaneity: |
Opaque |
| Fracture: |
Malleable - Deforms rather than breaking apart with a hammer. |
| Habit: |
Anhedral Grains - Granular minerals without the expression of crystal shapes |
| Hardness: |
4.5 - Between Fluorite and Apatite |
| Luminescence: |
Non-fluorescent. |
| Luster: |
Metallic |
| Streak: |
yellow |
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Optical Properties of Tetra-auricupride
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| RL Anisotrophism: |
Weak, with colors from gray to light gray. |
| RL Color: |
Copper red with a yellow tint. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Tetra-auricupride in Air
| λ |
R |
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∑ R(λ) |
| 405 nm |
44.60 |
 |
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| 436 nm |
46.80 |
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| 480 nm |
50.30 |
 |
| 526 nm |
55.80 |
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| 546 nm |
61.20 |
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| 578 nm |
74.40 |
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| 589 nm |
76.60 |
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| 622 nm |
83.60 |
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| 644 nm |
84.90 |
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| 656 nm |
85.40 |
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| 664 nm |
86.60 |
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| 700 nm |
91.30 |
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Calculated Relative Intensity Colors of Tetra-auricupride in Air
Relative
Intensity |
0% |
20% |
40% |
60% |
80% |
100% |
120% |
140% |
160% |
180% |
190% |
| R |
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Calculated Properties of Tetra-auricupride
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| Electron Density: |
Bulk Density (Electron Density)=12.5 gm/cc
note: Specific Gravity of Tetra-auricupride =15.0 gm/cc.
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| Fermion Index: |
Fermion Index = 0
Boson Index = 1 |
| Photoelectric: |
PETetra-auricupride =1,252.86 barns/electron
U=PETetra-auricupride x rElectron Density=15612.99 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Tetra-auricupride is Not Radioactive |
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Tetra-auricupride Classification
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| Dana Class: |
01.01.02.02 (01)Native Elements |
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(01.01)with metallic elements other than the platinum group |
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(01.01.02)Auricupride Group |
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01.01.02.01 Auricupride Cu3Au P m3m 4/m 3 2/m |
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01.01.02.02 Tetra-auricupride AuCu P 4/mmm 4/m 2/m 2/m |
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01.01.02.03 Yuanjiangite AuSn P 63/mmc 6/m 2/m 2/m |
| Strunz Class: |
01.AA.10b 01 - ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides) |
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01.A - Metals and Intermetallic Alloys |
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01.AA -Copper-cupalite family |
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01.AA.10b Tetra-auricupride AuCu P 4/mmm 4/m 2/m 2/m |
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Other Tetra-auricupride Information
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| References: |
NAME( Dana8) PHYS. PROP.(List of New Min. Names,28-33th,1974-1984) |
| See Also: |
Links to other databases for Tetra-auricupride :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - GeoScienceWorld
5 - Google Images
6 - Google Scholar
7 - MinDAT
8 - Mineralienatlas (Deutsch)
9 - Online Mineral Museum
10 - QUT Mineral Atlas
11 - Ruff.Info
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Tetra-auricupride
AuCu
Dana No: 01.01.02.02 Strunz No: 01.AA.10b
Locality:
Notes:
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