Cobaltpentlandite
A valid IMA mineral species
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About Cobaltpentlandite
Formula:
Co9S8
Co is often replaced by minor Ni and Fe.
Colour:
Yellow
Lustre:
Metallic
Hardness:
4 - 4½
Specific Gravity:
5.22 (Calculated)
Crystal System:
Isometric
Member of:
Name:
Originally named cobalt pentlandite (two words) in 1959 by O. Kuova, Maija Huhma, and Yrjö Vuorelainen, for its cobalt content and relation to pentlandite. The name was later changed to a single word by the International Mineralogical Association (Burke 2008).
Unique Identifiers
Mindat ID:
1097
Long-form identifier:
mindat:1:1:1097:5
GUID
(UUID V4):
(UUID V4):
a042991f-57e7-43cc-a48b-097f04f451b8
IMA Classification of Cobaltpentlandite
Approved
IMA status notes:
Renamed by the IMA
First published:
1959
Classification of Cobaltpentlandite
2.BB.15
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
B : Metal Sulfides, M: S > 1: 1 (mainly 2: 1)
B : With Ni
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
B : Metal Sulfides, M: S > 1: 1 (mainly 2: 1)
B : With Ni
2.7.1.3
2 : SULFIDES
7 : AmBnXp, with (m+n):p = 9:8
2 : SULFIDES
7 : AmBnXp, with (m+n):p = 9:8
3.10.1
3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
10 : Sulphides etc. of Co
3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
10 : Sulphides etc. of Co
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 |
---|---|---|
Copn | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Cpn | 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 Cobaltpentlandite
Metallic
Transparency:
Opaque
Colour:
Yellow
Hardness:
4 - 4½ on Mohs scale
Hardness:
VHN100=278 - 332 kg/mm2 - Vickers
Cleavage:
Distinct/Good
on {100}
on {100}
Density:
5.22 g/cm3 (Calculated)
Optical Data of Cobaltpentlandite
Type:
Isotropic
Reflectivity:
Wavelength | R |
---|---|
400nm | 36.9% |
420nm | 41.9% |
440nm | 45.9% |
460nm | 49.2% |
480nm | 51.7% |
500nm | 53.8% |
520nm | 55.6% |
540nm | 57.0% |
560nm | 58.2% |
580nm | 59.2% |
600nm | 60.0% |
620nm | 60.5% |
640nm | 61.0% |
660nm | 61.2% |
680nm | 61.4% |
700nm | 61.5% |
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 61.5%.
Colour in reflected light:
Slightly lighter bronze-yellow as compared to pentlandite
Chemistry of Cobaltpentlandite
Mindat Formula:
Co9S8
Co is often replaced by minor Ni and Fe.
Co is often replaced by minor Ni and Fe.
Elements listed:
Common Impurities:
Fe,Ni
Crystallography of Cobaltpentlandite
Crystal System:
Isometric
Class (H-M):
m3m (4/m 3 2/m) - Hexoctahedral
Space Group:
Fm3m
Setting:
Fm3m
Cell Parameters:
a = 9.973 Å
Unit Cell V:
991.92 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Exolved lammellae, crystals under 4mm.
Crystal Structure
Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Show
Big Balls | Small Balls | Just Balls | Spacefill
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Big Balls | Small Balls | Just Balls | Spacefill
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Remove metal-metal sticks
Display Options
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Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
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2D | Stereo | Red-Blue | Red-Cyan
View
CIF File Best | x | y | z | a | b | c
CIF File Best | x | y | z | a | b | c
Rotation
Stop | Start
Stop | Start
Labels
Console Off | On | Grey | Yellow
Console Off | On | Grey | Yellow
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) |
---|---|---|---|---|---|---|---|
0005106 | Cobaltpentlandite | Rajamani V, Prewitt C T (1975) Refinement of the structure of Co9S8 The Canadian Mineralogist 13 75-78 | 1975 | 0 | 293 | ||
0018076 | Cobaltpentlandite | Lindqvist M, Lindqvist D, Westgren A (1936) The crystal structure of Co9 S8 and of pentlandite (Ni Fe)9 S8 _cod_database_code 1011206 Svensk Kemisk Tidskrift 48 156-160 | 1936 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
3.008 Å | (100) |
1.763 Å | (100) |
1.918 Å | (80) |
5.75 Å | (60) |
2.878 Å | (60) |
1.018 Å | (60) |
2.288 Å | (50) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 3b: Earth’s earliest hydrosphere | >4.45 |
12 : Hadean hydrothermal subsurface sulfide deposits (see also #33) | |
15 : Black/white smoker minerals and other seafloor hydrothermal minerals | |
High-𝑇 alteration and/or metamorphism | |
33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12]) |
Geological Setting:
Hydrothermal veins.
Type Occurrence of Cobaltpentlandite
Reference:
Kuova, O., Huhma, M., and Vuorelainen, Y. (1959) A natural cobalt analog of pentlandite. American Mineralogist: 44: 897-900.
Other Language Names for Cobaltpentlandite
Relationship of Cobaltpentlandite to other Species
Member of:
Other Members of this group:
Argentopentlandite | Ag(Fe,Ni)8S8 | Iso. m3m (4/m 3 2/m) : Fm3m |
Geffroyite | (Cu,Fe,Ag)9(Se,S)8 | Iso. m3m (4/m 3 2/m) : Fm3m |
Oberthürite | Rh3Ni32S32 | Iso. |
Pentlandite | (NixFey)Σ9S8 | Iso. m3m (4/m 3 2/m) : Fm3m |
Shadlunite | (Pb,Cd)(Fe,Cu)8S8 | Iso. m3m (4/m 3 2/m) : Fm3m |
Sugakiite | Cu(Fe,Ni)8S8 | Tet. 4/mmm (4/m 2/m 2/m) : P42/mnm |
Forms a series with:
Common Associates
Associated Minerals Based on Photo Data:
2 photos of Cobaltpentlandite associated with Chalcopyrite | CuFeS2 |
2 photos of Cobaltpentlandite associated with Pyrrhotite | Fe1-xS |
1 photo of Cobaltpentlandite associated with Awaruite | Ni3Fe |
1 photo of Cobaltpentlandite associated with Heazlewoodite | Ni3S2 |
1 photo of Cobaltpentlandite associated with Millerite | NiS |
1 photo of Cobaltpentlandite associated with Sphalerite | ZnS |
1 photo of Cobaltpentlandite associated with Cubanite | CuFe2S3 |
1 photo of Cobaltpentlandite associated with Bornite | Cu5FeS4 |
1 photo of Cobaltpentlandite associated with Magnetite | Fe2+Fe3+2O4 |
Related Minerals - Strunz-mindat Grouping
2.BB. | Horomanite | Fe6Ni3S8 |
2.BB. | Samaniite | Cu2Fe5Ni2S8 |
2.BB. | UM2007-27-S:CuFeIrNiRh | (Ni,Fe,Cu,Rh,Ir)11S9 |
2.BB. | Arsenotučekite | Ni18Sb3AsS16 |
2.BB. | Hrabákite | Ni9PbSbS8 |
2.BB.05 | Heazlewoodite | Ni3S2 |
2.BB.05 | Oregonite | Ni2FeAs2 |
2.BB.05 | Vozhminite | (Ni,Co)4(As,Sb)S2 |
2.BB.05 | UM2007-30-S:Fe | Fe3S2 |
2.BB.10 | Arsenohauchecornite | Ni18Bi3AsS16 |
2.BB.10 | Bismutohauchecornite | Ni9Bi2S8 |
2.BB.10 | Hauchecornite | Ni9BiSbS8 |
2.BB.10 | Tellurohauchecornite | Ni9Bi(Te,Bi)S8 |
2.BB.10 | Tučekite | Ni9Sb2S8 |
2.BB.15 | Argentopentlandite | Ag(Fe,Ni)8S8 |
2.BB.15 | Geffroyite | (Cu,Fe,Ag)9(Se,S)8 |
2.BB.15 | Godlevskite | (Ni,Fe)9S8 |
2.BB.15 | Kharaelakhite | (Cu,Pt,Pb,Fe,Ni)9S8 |
2.BB.15 | Manganoshadlunite | (Mn,Pb,Cd)(Cu,Fe)8S8 |
2.BB.15 | Pentlandite | (NixFey)Σ9S8 |
2.BB.15 | Shadlunite | (Pb,Cd)(Fe,Cu)8S8 |
2.BB.15 | Sugakiite | Cu(Fe,Ni)8S8 |
2.BB.15 | UM2002-26-S:FeNi | (Ni,Fe)9S8 |
2.BB.15 | Ferhodsite | (Fe,Rh,Ni,Ir,Cu,Pt)9S8 |
2.BB.15 | Oberthürite | Rh3Ni32S32 |
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 Cobaltpentlandite
mindat.org URL:
https://www.mindat.org/min-1097.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
External Links:
Mineral Dealers:
References for Cobaltpentlandite
Reference List:
Petruk, W., Harris, D. C., Stewart, J. M. (1969) Langisite, a new mineral, and the rare minerals cobalt pentlandite, siegenite, parkerite, and bravoite from the Langis mine, Cobalt-Gowganda area, Ontario, Canada. The Canadian Mineralogist, 9 (5) 597-616
Burke, Ernst A. J. (2008) Tidying up mineral names: an IMA-CNMNC scheme for suffixes, hyphens and diacritical marks. The Mineralogical Record, 39 (2) 131-135
Localities for Cobaltpentlandite
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.
Argentina | |
| Brodtkorb (2002) |
Atlantic Ocean | |
| Firstova et al. (2016) |
Canadian Mineralogist: 34: 23-28. | |
| Bortnikov et al. (2001) +1 other reference |
Australia | |
| Webb (2014) |
Johan et al. (1989) | |
5th International Platinum Symposium ... | |
| Frank Keutsch collection |
| Grguric et al. (2013) |
Austria | |
| Reimann (1980) |
| Kolitsch et al. (2023) |
| Girtler et al. (2015) +1 other reference |
| Kollegger et al. (2008) |
Brazil | |
| Monteiro et al. (2008) +1 other reference |
| Monteiro et al. (2008) |
Canada | |
| Seiler et al. (2023) |
| Jiricka (2013) |
| Currie (1980) |
| [www.ontariominerals.com] +2 other references |
| Can Mineral December 1971 v. 11 no. 1 ... +4 other references |
| Mineralogical Society of America - ... |
| Bowen +1 other reference |
China | |
| Jianchun Lu and Youde Huang (1988) |
| Jinjie Yu et al. (2013) |
| wrgis.wr.usgs.gov (2004) |
| Jingsui Yang and Wenji Bai (1987) +1 other reference |
| Zhang Dequan et al. (2002) +1 other reference |
| - (n.d.) |
| Yunqing Zhen et al. (1992) |
| Yang Weihua (1996) |
Yongrui Zhao and Yunqing Zhen (2006) | |
| Gao et al. (2017) +1 other reference |
Czech Republic | |
| Sejkora et al. (2024) |
Finland | |
| www.gsf.fi (2002) |
| Vartiainen (1984) |
| Eilu (2003) |
| Pelayo Barrón Francisco (2020) |
| Geological Survey of Finland +2 other references |
| Kuova et al. (1959) |
Geological Survey of Finland 2011. ... | |
| Hänninen Esko 1986. Polvijärven ... |
| Geological Survey of Finland 2007 ... |
| Geological Survey of Finland 2008. ... +1 other reference |
Eilu (2003) | |
Geological Survey of Finland 2007 ... +2 other references | |
Geological Survey of Finland 2008. ... | |
Geological Survey of Finland 2008. ... | |
Geological Survey of Finland 2008. ... | |
Geological Survey of Finland 2008. ... | |
Geological Survey of Finland 2008. ... +1 other reference | |
| Mineralogical Society of America - ... +1 other reference |
France | |
| A. Sinojmeri et al. (Hautes Alpes) |
Greece | |
| Mineralogical Society of America - ... |
Greenland | |
| Mineralogical Magazine et al. (4) |
India | |
| Baidya et al. (2018) |
| Baidya et al. (2018) |
Iran | |
| Anthony et al. (1990) |
Ireland | |
| Yesares et al. (2021) |
Italy | |
| Piccoli et al. (2007) |
Japan | |
| Suzuki et al. (1976) +1 other reference |
| Vol.XXI +3 other references |
| Matsubara et al. (1979) |
| Yamada et al (2000) |
Kazakhstan | |
| Sharygin (2019) |
Lithuania | |
| Prušinskienė et al. (2017) |
Norway | |
| Nilsson et al. (1998) |
| Lindahl (1973) |
| Geological Survey of Norway (NGU) |
| Tufar (1967) |
| Lindahl (1973) |
| Geological Survey of Norway. The Ore ... |
Poland | |
| Nejbert K. 2008: Mineralogy of ... |
Kucha H. et al. (NE Poland) | |
Portugal | |
| Dias et al. (2006) |
Romania | |
| Cook et al. (2001) +1 other reference |
| Cook et al. (2001) +1 other reference |
Cook et al. (2001) +1 other reference | |
| Cook et al. (2001) +1 other reference |
Cook et al. (2001) +1 other reference | |
Cook et al. (2001) +1 other reference | |
Russia | |
| Kislov +1 other reference |
| Pavel M. Kartashov analytical data (2013) |
| Sidorov et al. (2018) |
| Novakov et al. (2021) |
| Alexander V. Dedeev et al (2002) |
| Sorokhtina et al. (2019) |
| ... |
| Mikhailova et al. (2015) +2 other references |
Mikhailova et al. (2015) +1 other reference | |
| Zaitsev et al. (2004) |
A. N. Korobeinikov et al. (1998) | |
| Grishaenko et al. (2007) |
| Safonov et al. (2003) |
| Sharygin et al. (2014) |
Slovakia | |
| Ozdín D. et al. (2013) |
South Africa | |
| Cairncross et al. (1995) |
Sweden | |
| Bjärnborg (2009) +1 other reference |
| NJMAh 166 +2 other references |
Dobbe et al. (1998) | |
| Holtstam et al. (1999) |
Turkey | |
| Akinci (2009) |
USA | |
| Gail E. Dunning and Joseph F. Cooper (2002) |
| California Geology: 48 (5) |
| Bart Cannon analysis |
Zambia | |
| Cox et al. (2003) |
| Frank K. Mazdab collection +2 other references |
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Rodionovskoe chromite mine, Ufaley District, Verkhny Ufaley, Chelyabinsk Oblast, Russia