Pekoite
A valid IMA mineral species
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About Pekoite
Formula:
PbCuBi11S18
May contain minor Se replacing S.
Colour:
lead-grey
Lustre:
Metallic
Hardness:
2 - 3
Specific Gravity:
6.8 (Calculated)
Crystal System:
Orthorhombic
Name:
Named in 1976 by W.G. Mumme and J.A. Watts for the Peko Mine, Australia, one of the first in the Tennant Creek gold field. Note that the type locality is not the Peko Mine, but rather the Juno Mine, a couple kilometers distant.
Unique Identifiers
Mindat ID:
3144
Long-form identifier:
mindat:1:1:3144:4
GUID
(UUID V4):
(UUID V4):
72ea669f-fb52-4564-b587-d636e142408d
IMA Classification of Pekoite
Approved
IMA Formula:
CuPbBi11S18
Approval year:
1975
First published:
1976
Classification of Pekoite
2.HB.05a
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
H : Sulfosalts of SnS archetype
B : With Cu, Ag, Fe, Sn and Pb
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
H : Sulfosalts of SnS archetype
B : With Cu, Ag, Fe, Sn and Pb
3.4.5.6
3 : SULFOSALTS
4 : ø = 3
3 : SULFOSALTS
4 : ø = 3
5.7.17
5 : Sulphosalts - Sulpharsenites and Sulphobismuthites (those containing Sn, Ge,or V are in Section 6)
7 : Sulpharsenites etc. of Pb and other metals
5 : Sulphosalts - Sulpharsenites and Sulphobismuthites (those containing Sn, Ge,or V are in Section 6)
7 : Sulpharsenites etc. of Pb and other metals
Mineral Symbols
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.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
Symbol | Source | Reference |
---|---|---|
Pek | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Pek | 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 Pekoite
Metallic
Transparency:
Opaque
Colour:
lead-grey
Streak:
lead-grey
Hardness:
2 - 3 on Mohs scale
Cleavage:
Distinct/Good
{010}
{010}
Density:
6.8 g/cm3 (Calculated)
Chemistry of Pekoite
Mindat Formula:
PbCuBi11S18
May contain minor Se replacing S.
May contain minor Se replacing S.
Elements listed:
Common Impurities:
Ag,Fe
Crystallography of Pekoite
Crystal System:
Orthorhombic
Class (H-M):
mm2 - Pyramidal
Cell Parameters:
a = 11.472(2) Å, b = 33.744(6) Å, c = 4.016(1) Å
Ratio:
a:b:c = 0.34 : 1 : 0.119
Unit Cell V:
1,554.64 ų (Calculated from Unit Cell)
Z:
2
Comment:
Space Group: P21am.
Crystal Structure
Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
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Big Balls | Small Balls | Just Balls | Spacefill
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Big Balls | Small Balls | Just Balls | Spacefill
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CIF File Best | x | y | z | a | b | c
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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) |
---|---|---|---|---|---|---|---|
0005123 | Pekoite | Mumme W G, Watts J A (1976) Pekoite, CuPbBi11S18, a new member of the bismuthinite-alkinite mineral series: its crystal structure and relationship with naturally- and synthetically-formed members The Canadian Mineralogist 14 322-333 | 1976 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
3.140 Å | (100) |
3.025 Å | (40) |
3.622 Å | (30) |
1.971 Å | (30) |
3.564 Å | (25) |
3.593 Å | (20) |
2.554 Å | (20) |
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 Pekoite
General Appearance of Type Material:
Crystals are prismatic, to 2 mm; in banded exsolution intergrowths epitaxial with gladite
Place of Conservation of Type Material:
Geology Department, University of New England, Australia, R27788.
Associated Minerals at Type Locality:
Reference:
Mumme, W.G. and Watts, J.A. (1976) Pekoite, CuPbBi11S18, a new member of the bismuthinite-aikinite mineral series: its crystal structure and relationship with naturally- and synthetically-formed members. Canadian Mineralogist (1976): 14: 322-333.
Synonyms of Pekoite
Other Language Names for Pekoite
Common Associates
Associated Minerals Based on Photo Data:
7 photos of Pekoite associated with Gladite | PbCuBi5S9 |
4 photos of Pekoite associated with Quartz | SiO2 |
3 photos of Pekoite associated with Chalcopyrite | CuFeS2 |
2 photos of Pekoite associated with Krupkaite | PbCuBi3S6 |
1 photo of Pekoite associated with Gold | Au |
1 photo of Pekoite associated with Bismutite | (BiO)2CO3 |
Related Minerals - Strunz-mindat Grouping
2.HB. | Barikaite | Ag3Pb10(Sb8As11)S40 |
2.HB. | Carducciite | (Ag2Sb2)Pb12(As,Sb)16S40 |
2.HB. | Sardashtite | Ag9Cu2.5Pb41Sb36.5As7S112 |
2.HB. | Interliveingite | AgPb18As25S56 |
2.HB. | Reckibachite | Ag2Pb12As14Sb4S40 |
2.HB.05a | Aikinite | PbCuBiS3 |
2.HB.05a | Friedrichite | Pb5Cu5Bi7S18 |
2.HB.05a | Gladite | PbCuBi5S9 |
2.HB.05a | Hammarite | Pb2Cu2Bi4S9 |
2.HB.05c | Jaskólskiite | CuxPb2+x(Sb,Bi)2-xS5 (x ~ 0.15) |
2.HB.05a | Krupkaite | PbCuBi3S6 |
2.HB.05a | Lindströmite | Pb3Cu3Bi7S15 |
2.HB.05b | Meneghinite | Pb13CuSb7S24 |
2.HB.05a | Emilite | Pb2.7Cu2.7Bi5.3S12 |
2.HB.05 | UM2000-46-S:BiCuPb | Cu0.33Pb0.33Bi7.67S12 |
2.HB.05a | Salzburgite | Pb1.6Cu1.6Bi6.4S12 |
2.HB.05 | UM1990-54-Se:BiCuPb | CuPb(Ni,Co)0.3Bi3Se6 |
2.HB.05a | Paarite | Pb1.7Cu1.7Bi6.3S12 |
2.HB.10c | Eclarite | (Cu,Fe)Pb9Bi12S28 |
2.HB.10b | Giessenite | Pb27Cu2(Bi,Sb)19S57 |
2.HB.10b | Izoklakeite | Pb27(Cu,Fe,Ag)2(Sb,Bi)19S57 |
2.HB.10a | Kobellite | Pb22Cu4(Bi,Sb)30S69 |
2.HB.10a | Tintinaite | Pb22Cu4(Sb,Bi)30S69 |
2.HB.15 | Benavidesite | Pb4MnSb6S14 |
2.HB.15 | Jamesonite | Pb4FeSb6S14 |
2.HB.20d | Berryite | Cu3Ag2Pb3Bi7S16 |
2.HB.20b | Buckhornite | AuPb2BiTe2S3 |
2.HB.20a | Nagyágite | [Pb3(Pb,Sb)3S6](Au,Te)3 |
2.HB.20e | Watkinsonite | Cu2PbBi4(Se,S,Te)8 |
2.HB.20c | Museumite | [Pb2(Pb,Sb)2S8][(Te,Au)2] |
2.HB.20e | Litochlebite | Ag2PbBi4Se8 |
2.HB.20b | Jaszczakite | [Bi3S3][AuS2] |
2.HB.20e | Luxembourgite | AgCuPbBi4Se8 |
2.HB.25 | Meerschautite | (Ag,Cu)6Pb43-2xSb44+2xS112Ox (x ~0.5) |
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 Pekoite
mindat.org URL:
https://www.mindat.org/min-3144.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Pekoite
Localities for Pekoite
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.
Australia (TL) | |
| AM 1976 +1 other reference |
| Wormald (1993) |
| Mueller +3 other references |
Austria | |
| Niedermayr et al. (1995) |
Pichler (2009) | |
| Paar et al. (1982) +1 other reference |
| Strasser (1989) |
Brazil | |
| |
Bulgaria | |
| Kolkovski B et al. (2003) |
| Birch et al. (1985) |
| www.bgd.bg (n.d.) +1 other reference |
Canada | |
| Richard Gunter specimen +3 other references |
China | |
| Xiangping et al. (2001) |
France | |
| Lheur et al. (2011) |
Greece | |
| Voudouris et al. (2018, July) |
| Korosidis et al. (2022, March) |
Hungary | |
| collector: László Tóth +1 other reference |
Italy | |
| Bedognè et al. (1993) |
Lapis (10) | |
| Deidda et al. (2022) |
Deidda et al. (2022) | |
Japan | |
| Izumino et al. (2014) |
Kazakhstan | |
| Efimov A.V. Bismuthian mineralisation ... |
Morocco | |
| Paar et al. (2006) |
Norway | |
| Husdal et al. (2020) |
Poland | |
| Pieczka et al. (2012) +2 other references |
Romania | |
| Anthony et al. (1990) |
Shimizu et al. (1998) | |
Shimizu et al. (1998) | |
| Singer et al. (2008) |
| Cook +1 other reference |
| Plotinskaya et al. (2009) |
Russia | |
| Rogov et al. (2023) |
Rogov et al. (2023) | |
| Ivashchenko et al. (2011, September) |
Slovakia | |
| Pršek J. |
| Pršek J. (Kandid. Diz.práca) |
| Pršek et al. (2008) |
| Pršek J. (Kandid. dizert. práca) |
| Bakoš |
Ozdin D. | |
Ozdín D. (2003) | |
Sweden | |
| |
Switzerland | |
| Schweizer Strahler |
| Stalder et al. (1998) +1 other reference |
UK | |
| Lowry et al. (1994) |
USA | |
| - (2008) |
| Anthony et al. (1995) |
Anthony et al. (1995) | |
| ... |
| Mineralogical Society of America - ... |
Uzbekistan | |
| Anthony et al. (1990) +1 other reference |
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Akchatau Mine, Akshatau, Shet District, Karaganda Region, Kazakhstan