Součekite
A valid IMA mineral species
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About Součekite
Formula:
PbCuBi(S,Se)3
Colour:
Lead-grey
Lustre:
Metallic
Hardness:
3½ - 4
Specific Gravity:
7.60 (Calculated)
Crystal System:
Orthorhombic
Member of:
Name:
Named after Frantisek Souček (1911-1989), Department of Mineralogy, Charles University, Prague (Czech Republic).
Unique Identifiers
Mindat ID:
3718
Long-form identifier:
mindat:1:1:3718:7
GUID
(UUID V4):
(UUID V4):
62440cc5-5b48-4f81-8e7c-c9eae8ba71c7
IMA Classification of Součekite
Approved
IMA Formula:
CuPbBi(S,Se)3
First published:
1979
Classification of Součekite
2.GA.50
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
G : Sulfarsenites, sulfantimonites, sulfbismuthites
A : Neso-sulfarsenites, etc. without additional S
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
G : Sulfarsenites, sulfantimonites, sulfbismuthites
A : Neso-sulfarsenites, etc. without additional S
3.4.3.3
3 : SULFOSALTS
4 : ø = 3
3 : SULFOSALTS
4 : ø = 3
3.7.25
3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
7 : Sulphides etc. of V, As, Sb and Bi
3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
7 : Sulphides etc. of V, As, Sb and Bi
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 |
|---|---|---|
| Sče | 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 Součekite
Metallic
Transparency:
Opaque
Colour:
Lead-grey
Hardness:
3½ - 4 on Mohs scale
Hardness:
VHN25=166 - 188 kg/mm2 - Vickers
Cleavage:
None Observed
Density:
7.60 g/cm3 (Calculated)
Optical Data of Součekite
Anisotropism:
Medium strong; pale brown to dark blue-gray.
Reflectivity:
| Wavelength | R1 | R2 |
|---|---|---|
| 420nm | 44.3% | 48.2% |
| 440nm | 44.2% | 47.9% |
| 460nm | 44.1% | 47.5% |
| 480nm | 43.7% | 47.1% |
| 500nm | 43.9% | 47.1% |
| 520nm | 43.8% | 47.2% |
| 540nm | 43.7% | 47.2% |
| 560nm | 43.6% | 47.3% |
| 580nm | 43.5% | 47.3% |
| 600nm | 43.5% | 47.4% |
| 620nm | 43.5% | 47.5% |
| 640nm | 43.4% | 47.6% |
| 660nm | 43.6% | 47.7% |
| 680nm | 43.4% | 47.4% |
| 700nm | 43.4% | 47.7% |
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 48.2%.
R1 shown in black, R2 shown in red
Colour in reflected light:
Creamy with a brownish tint.
Pleochroism:
Visible
Comments:
Distinct in oil, in creamy brown to pale gray with a bluish tint.
Chemistry of Součekite
Mindat Formula:
PbCuBi(S,Se)3
Common Impurities:
Te
Crystallography of Součekite
Crystal System:
Orthorhombic
Class (H-M):
mm2 - Pyramidal
Cell Parameters:
a = 8.153(3) Å, b = 8.498(4) Å, c = 8.080(3) Å
Ratio:
a:b:c = 0.959 : 1 : 0.951
Unit Cell V:
559.82 ų (Calculated from Unit Cell)
Z:
4
Morphology:
anhedral grains, veins
Twinning:
Very fine polysynthetic twinning.
Comment:
by analogy to bournonite Space Group: [P n21m]
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 2.757 Å | (100) |
| 2.717 Å | (100) |
| 4.040 Å | (80) |
| 4.249 Å | (60) |
| 2.019 Å | (60) |
| 3.774 Å | (50) |
| 1.833 Å | (50) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| High-𝑇 alteration and/or metamorphism | |
| 33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12]) |
Type Occurrence of Součekite
General Appearance of Type Material:
Anhedral grains up to 0.01 mm across.
Place of Conservation of Type Material:
Charles University, Prague, Czech Republic, 21241.
National School of Mines, Paris, France.
National School of Mines, Paris, France.
Geological Setting of Type Material:
Hydrothermal quartz-carbonate veins
Associated Minerals at Type Locality:
Reference:
Čech, F., Vavřín, I. (1979) Součekite, CuPbBi(S,Se)3, a new mineral of the bournonite group. Neues Jahrbuch für Mineralogie, Monatshefte: 1979: 289-295.
Other Language Names for Součekite
Relationship of Součekite to other Species
Member of:
Other Members of this group:
| Bournonite | PbCuSbS3 | Orth. mm2 : Pmn21 |
| Cerromojonite | CuPbBiSe3 | Orth. |
| Seligmannite | PbCuAsS3 | Orth. mmm (2/m 2/m 2/m) : Pmmn |
Common Associates
Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat Grouping
| 2.GA. | Arsiccioite | AgHg2Tl(As,Sb)2S6 |
| 2.GA. | Eckerite | Ag2CuAsS3 |
| 2.GA. | Pyradoketosite | Ag3SbS3 |
| 2.GA.05 | Proustite | Ag3AsS3 |
| 2.GA.05 | Pyrargyrite | Ag3SbS3 |
| 2.GA.10 | Pyrostilpnite | Ag3SbS3 |
| 2.GA.10 | Xanthoconite | Ag3AsS3 |
| 2.GA.15 | Samsonite | Ag4MnSb2S6 |
| 2.GA.20 | Skinnerite | Cu3SbS3 |
| 2.GA.20 | Wittichenite | Cu3BiS3 |
| 2.GA.20 | Bytízite | Cu3SbSe3 |
| 2.GA.25 | Lapieite | NiCuSbS3 |
| 2.GA.25 | Mückeite | NiCu(Bi,Sb)S3 |
| 2.GA.25 | Malyshevite | PdCuBiS3 |
| 2.GA.25 | Lisiguangite | PtCuBiS3 |
| 2.GA.25 | Roterbärite | PdBiCuSe3 |
| 2.GA.30 | Aktashite | Cu6Hg3As4S12 |
| 2.GA.30 | Gruzdevite | Cu6Hg3Sb4S12 |
| 2.GA.30 | Nowackiite | Cu6Zn3As4S12 |
| 2.GA.30 | Zhengminghuaite | Cu6Fe3As4S12 |
| 2.GA.35 | Laffittite | AgHgAsS3 |
| 2.GA.40 | Routhierite | Tl(Cu,Ag)(Hg,Zn)2(As,Sb)2S6 |
| 2.GA.40 | Stalderite | Tl(Cu,Ag)(Zn,Fe,Hg)2(As,Sb)2S6 |
| 2.GA.40 | Ralphcannonite | AgZn2TlAs2S6 |
| 2.GA.40 | Ferrostalderite | CuFe2TlAs2S6 |
| 2.GA.40 | Unnamed (Ag-Fe endmember of Routhierite Group) | AgFe2TlAs2S6 |
| 2.GA.45 | Erniggliite | Tl2SnAs2S6 |
| 2.GA.50 | Bournonite | PbCuSbS3 |
| 2.GA.50 | Seligmannite | PbCuAsS3 |
| 2.GA.50 | Unnamed (Pb-Cu-Bi Selenide) | PbCuBiSe3 |
| 2.GA.50 | Cerromojonite | CuPbBiSe3 |
| 2.GA.55 | Eldragónite | Cu6BiSe4(Se2) |
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 Součekite
mindat.org URL:
https://www.mindat.org/min-3718.html
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References for Součekite
Localities for Součekite
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.
Bulgaria | |
| Bonev +3 other references |
Canada | |
| Johan et al. (1987) |
China | |
| Xilin (1990) +1 other reference |
Czech Republic (TL) | |
| Bernard JH et al. Mineralogie ... +1 other reference |
North Macedonia | |
| Petrunov et al. (2001) |
Russia | |
| Kasatkin (2019) |
Ukraine | |
| Biruk et al. (2012) |
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Oldřichov, Nejdek, Karlovy Vary District, Karlovy Vary Region, Czech Republic