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
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).
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.
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