Cuprostibite
A valid IMA mineral species - grandfathered
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About Cuprostibite
Formula:
Cu2(Sb,Tl)
Colour:
Steel grey to violet-rose on fresh fracture
Lustre:
Metallic
Hardness:
4
Specific Gravity:
8.42 (Calculated)
Crystal System:
Tetragonal
Name:
Named in 1969 by C. Sorensen, Evgeny Ivanovich Semenov Semenov, Marianna Sergeevna Bezsmertnaya, and E. B. Khalezova from the Latin roots of the chemical composition, cupro- and stibium.
Type Locality:
Unique Identifiers
Mindat ID:
1193
Long-form identifier:
mindat:1:1:1193:4
IMA Classification of Cuprostibite
Approved, 'Grandfathered' (first described prior to 1959)
First published:
1969
Classification of Cuprostibite
2.AA.20
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
A : Alloys
A : Alloys of metalloids with Cu, Ag, Au
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
A : Alloys
A : Alloys of metalloids with Cu, Ag, Au
2.4.11.1
2 : SULFIDES
4 : AmBnXp, with (m+n):p = 2:1
2 : SULFIDES
4 : AmBnXp, with (m+n):p = 2:1
1.45
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.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Cusb | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Cuprostibite
Metallic
Transparency:
Opaque
Colour:
Steel grey to violet-rose on fresh fracture
Hardness:
4 on Mohs scale
Hardness:
VHN50=216 - 249 kg/mm2 - Vickers
Cleavage:
Distinct/Good
In one direction
In one direction
Fracture:
Irregular/Uneven
Density:
8.42 g/cm3 (Calculated)
Optical Data of Cuprostibite
Anisotropism:
strong
Reflectivity:
| Wavelength | R1 (%) | R2 (%) |
|---|---|---|
| 400nm | 51.1% | 58.6% |
| 420nm | 52.5% | 58.5% |
| 440nm | 52.2% | 56.9% |
| 460nm | 50.0% | 54.9% |
| 480nm | 47.4% | 52.6% |
| 500nm | 45.5% | 50.3% |
| 520nm | 42.2% | 47.6% |
| 540nm | 37.8% | 45.0% |
| 560nm | 35.4% | 42.5% |
| 580nm | 35.7% | 41.7% |
| 600nm | 39.6% | 43.0% |
| 620nm | 45.4% | 45.9% |
| 640nm | 50.7% | 49.3% |
| 660nm | 55.9% | 52.0% |
| 680nm | 59.7% | 54.3% |
| 700nm | 62.6% | 55.7% |
Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 62.6%.
R1 shown in black, R2 shown in red
Colour in reflected light:
Violet-rose
Pleochroism:
Visible
Comments:
Creamy white to dark rose-violet
Chemistry of Cuprostibite
Mindat Formula:
Cu2(Sb,Tl)
Elements listed:
Common Impurities:
Zn,Ag,Pb,Fe,As,S
Crystallography of Cuprostibite
Crystal System:
Tetragonal
Class (H-M):
4/mmm(4/m2/m2/m) - Ditetragonal Dipyramidal
Space Group:
P4/nmm
Setting:
P4/nmm
Cell Parameters:
a = 3.990 Å, c = 6.09 Å
Ratio:
a:c = 1 : 1.526
Unit Cell V:
96.95 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Fine grained aggregates
Twinning:
Platy
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) |
|---|---|---|---|---|---|---|---|
| 0010875 | Cuprostibite | Pearson W B (1985) The Cu2Sb and related structures Zeitschrift fur Kristallographie 171 23-39 |  | 1985 | 0 | 293 | |
| 0016974 | Cuprostibite | Elander M, Haegg G, Westgren A (1935) The Crystal Structure of Cu2Sb and Fe2As _cod_database_code 1010038 Arkiv for Kemi, Mineralogi och Geologi B12 1-6 | 1935 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 2.07 Å | (100) |
| 2.56 Å | (50) |
| 2.82 Å | (40) |
| 1.993 Å | (40) |
| 1.167 Å | (40) |
| 1.424 Å | (30) |
| 3.33 Å | (20) |
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 10b: Anthropogenic minerals | <10 Ka |
| 56 : Slag and smelter minerals (see also #51 and #55) |
Type Occurrence of Cuprostibite
Place of Conservation of Type Material:
University of Copenhagen, Copenhagen, Denmark.
Geological Setting of Type Material:
Ussingite vein cutting sodalite syenite.
Associated Minerals at Type Locality:
Other Language Names for Cuprostibite
Common Associates
Associations Based on Photo Data:
| 33 photos of Cuprostibite associated with Native Copper | Cu |
| 16 photos of Cuprostibite associated with Goethite | Fe3+O(OH) |
| 14 photos of Cuprostibite associated with Malachite | Cu2(CO3)(OH)2 |
| 13 photos of Cuprostibite associated with Native Silver | Ag |
| 6 photos of Cuprostibite associated with Ussingite | Na2AlSi3O8OH |
| 3 photos of Cuprostibite associated with Aegirine | NaFe3+Si2O6 |
| 3 photos of Cuprostibite associated with Chalcothallite | Tl2(Cu,Fe)6SbS4 |
| 3 photos of Cuprostibite associated with Adamite | Zn2(AsO4)(OH) |
| 3 photos of Cuprostibite associated with Domeykite | Cu3As |
| 3 photos of Cuprostibite associated with Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
Related Minerals - Strunz-mindat Grouping
| 2.AA. | Trigodomeykite | Cu3-xAs |
| 2.AA.10b | Domeykite | Cu3As |
| 2.AA.10a | Algodonite | (Cu1-xAsx) |
| 2.AA.10d | Koutekite | Cu5As2 |
| 2.AA.15 | Novákite | (Cu,Ag)21As10 |
| 2.AA.25 | Kutinaite | Ag6Cu14As7 |
| 2.AA.30 | Allargentum | (Ag1-xSbx) |
| 2.AA.35 | Dyscrasite | Ag3Sb |
| 2.AA.40 | Maldonite | Au2Bi |
| 2.AA.45 | Stistaite | SnSb |
| 2.AA.50 | Zaccariniite | RhNiAs |
| 2.AA.55 | Dienerite | Ni3As |
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 Cuprostibite
mindat.org URL:
https://www.mindat.org/min-1193.html
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References for Cuprostibite
Reference List:
Pearson, W. B. (1985) The Cu2Sb and related structures. Zeitschrift für Kristallographie - Crystalline Materials, 171 (1-4). 23-39 doi:10.1524/zkri.1985.171.14.23
Nuss, Jürgen, Jansen, Martin (2002) Zur Abgrenzung der PbFCl- und Cu2Sb-Strukturfamilien: Neubestimmung und Verfeinerung der Kristallstrukturen von CuMgSb, Cu2Sb und CuMgAs. Zeitschrift für anorganische und allgemeine Chemie, 628. 1152-1157 doi:10.1002/1521-3749(200206)628:5<1152::aid-zaac1152>3.0.co;2-1
Localities for Cuprostibite
Showing 23 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.
Austria | |
| Bechter (2009) +1 other reference |
Czech Republic | |
| Škácha P. et al. (2009) |
| - (Pavel Škácha coll.) | |
France | |
| P Le Roch self collected |
| Lheur et al. (1998) |
Greenland | |
| Petersen (2001) |
| Knut Eldjarn Collection | |
| Karup-Møller et al. (2001) | |
| Fleischer et al. (1980) +1 other reference | |
| Karup-Møller et al. (2001) |
| Karup-Møller et al. (2001) | |
Kazakhstan | |
| Pavel M. Kartashov (n.d.) |
Russia | |
| Pekov (1998) +4 other references |
| Bortnikov et al. (2023) |
| Sandimirova et al. (2014) |
| Dvorani (2016) |
| Koval'skii et al. (1985) +1 other reference |
Sweden | |
| Hålenius et al. (1982) |
| |
| Holtstam et al. (1999) | |
UK | |
| Norman Wilson collection +1 other reference |
| Rust (2022) |
USA | |
| Burke et al. (1988) +1 other reference |
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Kangerluarsuk Fjord, Ilímaussaq complex, Kujalleq, Greenland