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Pyrrhotite-5C
A structural variant of Pyrrhotite
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About Pyrrhotite-5C
Formula:
Fe9S10
Crystal System:
Monoclinic
A polytype of Pyrrhotite
The crystal structure of a 5C pyrrhotite from Copper Cliff Mine, Sudbury, Canada, was described by de Villiers et al. (2009), as orthorhombic, space group Cmce. Later redetermined as monoclinic, space group P21, by Liles & de Villiers (2012).
The crystal structure of a 5C pyrrhotite from Copper Cliff Mine, Sudbury, Canada, was described by de Villiers et al. (2009), as orthorhombic, space group Cmce. Later redetermined as monoclinic, space group P21, by Liles & de Villiers (2012).
Unique Identifiers
Mindat ID:
39654
Long-form identifier:
mindat:1:1:39654:1
Similar Names
| Pyrrhotite-11H | A synonym of 'Pyrrhotite-11C' |
| Pyrrhotite-2C | A synonym of Troilite |
| Pyrrhotite-4M | A synonym of 'Pyrrhotite-4C' |
| Pyrrhotite-6M | A synonym of 'Pyrrhotite-6C' |
Chemistry of Pyrrhotite-5C
Mindat Formula:
Fe9S10
Elements listed:
Crystallography of Pyrrhotite-5C
Crystal System:
Monoclinic
Class (H-M):
2 - Sphenoidal
Space Group:
P21
Setting:
P21
Cell Parameters:
a = 6.8673(4) Å, b = 28.6536(9) Å, c = 6.8592(4) Å
β = 119.975(7)°
β = 119.975(7)°
Ratio:
a:b:c = 0.24 : 1 : 0.239
Unit Cell V:
1169.18 ų
Z:
4
Comment:
Refinement data from sample from Bodenmais (Liles & de Villiers 2012)
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 2.985 Å | (42) |
| 2.647 Å | (42) |
| 2.066 Å | (99) |
| 1.723 Å | (38) |
| 1.323 Å | (10) |
Comments:
Calculated from Cmca structure (AMCSD); only strongest peaks listed here. Powder pattern very similar to that of pyrrhotite 6C.
Synonyms of Pyrrhotite-5C
Other Language Names for Pyrrhotite-5C
German:Pyrrhotin-5H
Common Associates
Associations Based on Photo Data:
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 Pyrrhotite-5C
mindat.org URL:
https://www.mindat.org/min-39654.html
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References for Pyrrhotite-5C
Reference List:
Engel, Ruth F., Peacor, Donald R., Kelly, William C. (1978) A new 5C pyrrhotite. American Mineralogist, 63 (11-12) 1274-1277
de Villiers, J. P.R., Liles, D. C., Becker, M. (2009) The crystal structure of a naturally occurring 5C pyrrhotite from Sudbury, its chemistry, and vacancy distribution. American Mineralogist, 94 (10) 1405-1410 doi:10.2138/am.2009.3081
Elliot, Alexander Dean (2010) Structure of pyrrhotite 5C (Fe9S10). Acta Crystallographica Section B Structural Science, 66 (3). 271-279 doi:10.1107/s0108768110011845
Localities for Pyrrhotite-5C
Showing 10 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.
Austria | |
| Kolitsch et al. (2018) |
Canada | |
| de Villiers et al. (2009) |
China | |
| Shen (n.d.) |
Estonia | |
| - (2026) |
Germany | |
| Liles et al. (2012) |
Poland | |
| Dulski et al. (2025) |
| Cu +2 other references |
Russia | |
| Ivanyuk et al. (2018) |
| Gregory Ivanyuk et al. (2018) | |
Switzerland | |
| Engel et al. (1978) |
Kalatongke Mine, Fuyun Co., Altay Prefecture, Ili Kazakh Autonomous Prefecture, Xinjiang, China