Shadlunite
A valid IMA mineral species
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About Shadlunite
Tatiana N. Shadlun
Formula:
(Pb,Cd)(Fe,Cu)8S8
Colour:
Yellow-gray
Lustre:
Metallic
Hardness:
4
Specific Gravity:
4.72 (Calculated)
Crystal System:
Isometric
Member of:
Name:
Named in honor of Tatiana Nikolaevna Shadlun (Татьяна Николаевна Шадлун) (10 June 1912, Kiev - May 1996), Russian mineralogist, professor, and an expert on ore minerals.
This page provides mineralogical data about Shadlunite.
Unique Identifiers
Mindat ID:
3628
Long-form identifier:
mindat:1:1:3628:9
IMA Classification of Shadlunite
Approved
IMA Formula:
(Fe,Cu)8(Pb,Cd)S8
Approval year:
1972
First published:
1973
Classification of Shadlunite
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
2.7.1.4
2 : SULFIDES
7 : AmBnXp, with (m+n):p = 9:8
2 : SULFIDES
7 : AmBnXp, with (m+n):p = 9:8
3.6.11
3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
6 : Sulphides etc. of Sb and Pb
3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
6 : Sulphides etc. of Sb and Pb
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 |
|---|---|---|
| Slu | 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 Shadlunite
Metallic
Transparency:
Opaque
Colour:
Yellow-gray
Streak:
Light grayish yellow
Hardness:
4 on Mohs scale
Hardness:
VHN20=210 kg/mm2 - Vickers
Density:
4.72 g/cm3 (Calculated)
Optical Data of Shadlunite
Anisotropism:
Weakly
Bireflectance:
Weakly
Reflectivity:
| Wavelength | R1 (%) |
|---|---|
| 440nm | 19.0% |
| 460nm | 20.1% |
| 500nm | 22.5% |
| 540nm | 24.8% |
| 580nm | 26.8% |
| 620nm | 28.3% |
| 660nm | 30.0% |
| 700nm | 31.0% |
| 740nm | 31.5% |
Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 31.5%.
Colour in reflected light:
Grayish-yellow
Internal Reflections:
None
Pleochroism:
Weak
Chemistry of Shadlunite
Mindat Formula:
(Pb,Cd)(Fe,Cu)8S8
Element Weights:
Crystallography of Shadlunite
Crystal System:
Isometric
Class (H-M):
m3m(4/m32/m) - Hexoctahedral
Space Group:
Fm3m
Setting:
Fm3m
Cell Parameters:
a = 10.91 Å
Unit Cell V:
1,298.60 ų (Calculated from Unit Cell)
Z:
4
Twinning:
polysynthetic twinning
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.29 Å | (100) |
| 1.925 Å | (90) |
| 3.84 Å | (40) |
| 2.11 Å | (40) |
| 5.42 Å | (30) |
| 3.16 Å | (20) |
| 1.666 Å | (20) |
Comments:
Mayak Mine, Talnakh Cu-Ni Deposit, Noril'sk, Russia. The data are from the type description.
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]) |
Type Occurrence of Shadlunite
General Appearance of Type Material:
Irregular grains, hundredths of a mm to 0.4 mm in size and as veinlets less than 0.1 mm, mostly in cubanite, also in talnakhite ores.
Place of Conservation of Type Material:
A.E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia, 75510.
Associated Minerals at Type Locality:
Synonyms of Shadlunite
Other Language Names for Shadlunite
Relationship of Shadlunite to other Species
Member of:
Other Members of Pentlandite Group:
| Argentopentlandite | Ag(Fe,Ni)8S8 | Iso. m3m(4/m32/m) : Fm3m |
| Cobaltpentlandite | Co9S8 | Iso. m3m(4/m32/m) : Fm3m |
| Geffroyite | (Cu,Fe,Ag)9(Se,S)8 | Iso. m3m(4/m32/m) : Fm3m |
| Oberthürite | Rh3Ni32S32 | Iso. |
| Pentlandite | (NixFey)Σ9S8 | Iso. m3m(4/m32/m) : Fm3m |
| Sugakiite | Cu(Fe,Ni)8S8 | Tet. 4/mmm(4/m2/m2/m) : P42/mnm |
| Wangyanite | PdNi8S8 | Iso. m3m(4/m32/m) : Fd3c |
Common Associates
Associations Based on Photo Data:
| 8 photos of Shadlunite associated with Galena | PbS |
| 8 photos of Shadlunite associated with Talnakhite | Cu9(Fe,Ni)8S16 |
| 4 photos of Shadlunite associated with Chalcopyrite | CuFeS2 |
| 4 photos of Shadlunite associated with Pentlandite | (NixFey)Σ9S8 |
| 3 photos of Shadlunite associated with Magnetite | Fe2+Fe3+2O4 |
| 3 photos of Shadlunite associated with Native Silver | Ag |
| 2 photos of Shadlunite associated with Taimyrite | (Pd,Cu,Pt)3Sn |
| 2 photos of Shadlunite associated with Cubanite | CuFe2S3 |
| 1 photo of Shadlunite associated with Sphalerite | ZnS |
Related Minerals - Strunz-mindat Grouping
| 2.BB. | Arsenotučekite | Ni18Sb3AsS16 |
| 2.BB. | Hrabákite | Ni9PbSbS8 |
| 2.BB. | 'UM2007-27-S:CuFeIrNiRh' | (Ni,Fe,Cu,Rh,Ir)11S9 |
| 2.BB. | Horomanite | Fe6Ni3S8 |
| 2.BB. | Samaniite | Cu2Fe5Ni2S8 |
| 2.BB.05 | Heazlewoodite | Ni3S2 |
| 2.BB.05 | 'UM2007-30-S:Fe' | Fe3S2 |
| 2.BB.05 | Vozhminite | (Ni,Co)4(As,Sb)S2 |
| 2.BB.05 | Oregonite | Ni2FeAs2 |
| 2.BB.10 | Hauchecornite | Ni9BiSbS8 |
| 2.BB.10 | Arsenohauchecornite | Ni18Bi3AsS16 |
| 2.BB.10 | Tellurohauchecornite | Ni9Bi(Te,Bi)S8 |
| 2.BB.10 | Jinxiuite | Ni18Bi2SbAsS16 |
| 2.BB.10 | Bismutohauchecornite | Ni9Bi2S8 |
| 2.BB.10 | Tučekite | Ni9Sb2S8 |
| 2.BB.15 | Argentopentlandite | Ag(Fe,Ni)8S8 |
| 2.BB.15 | Ferhodsite | (Fe,Rh,Ni,Ir,Cu,Pt)9S8 |
| 2.BB.15 | Cobaltpentlandite | Co9S8 |
| 2.BB.15 | 'UM2002-26-S:FeNi' | (Ni,Fe)9S8 |
| 2.BB.15 | Pentlandite | (NixFey)Σ9S8 |
| 2.BB.15 | Oberthürite | Rh3Ni32S32 |
| 2.BB.15 | Geffroyite | (Cu,Fe,Ag)9(Se,S)8 |
| 2.BB.15 | Kharaelakhite | (Cu,Pt,Pb,Fe,Ni)9S8 |
| 2.BB.15 | 'Manganoshadlunite' | (Mn,Pb,Cd)(Cu,Fe)8S8 |
| 2.BB.15 | Sugakiite | Cu(Fe,Ni)8S8 |
| 2.BB.15 | Godlevskite | (Ni,Fe)9S8 |
| 2.BB.15 | Wangyanite | PdNi8S8 |
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 Shadlunite
mindat.org URL:
https://www.mindat.org/min-3628.html
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References for Shadlunite
Localities for Shadlunite
Showing 4 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.
Russia (TL) | |
| Evstigneeva et al. (1973) +4 other references |
| Yevstigneyeva et al. (1973) | |
USA | |
| McSwiggen (1999) |
| Castor et al. (2004) |
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Talnakh Cu-Ni Deposit, Norilsk-Talnakh Mining Region, Taimyr Peninsula, Taymyrskiy Autonomous Okrug, Krasnoyarsk Krai, Russia