Murchisite
A valid IMA mineral species
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About Murchisite
Formula:
Cr5S6
Specific Gravity:
4.22 (Calculated)
Crystal System:
Trigonal
Name:
The name murchisite is for the town of Murchison, Australia, near which the meteorite was found. The name “murchisonite,” was not used because it was used during the nineteenth century as a synonym for orthoclase.
Known as a synthetic compound.
Unique Identifiers
Mindat ID:
42447
Long-form identifier:
mindat:1:1:42447:3
Similar Names
IMA Classification of Murchisite
Classification of Murchisite
2.CB.47
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
C : Metal Sulfides, M: S = 1: 1 (and similar)
B : With Zn, Fe, Cu, Ag, etc.
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
C : Metal Sulfides, M: S = 1: 1 (and similar)
B : With Zn, Fe, Cu, Ag, etc.
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 |
|---|---|---|
| Mur | 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 Murchisite
Transparency:
Opaque
Hardness Data:
Could not be measured
Density:
4.22 g/cm3 (Calculated)
Comment:
Streak, luster, hardness, tenacity, cleavage, fracture, and density could not be measured due to the small grain size.
Chemistry of Murchisite
Mindat Formula:
Cr5S6
Elements listed:
Common Impurities:
V,Fe,Ni,P
Crystallography of Murchisite
Crystal System:
Trigonal
Class (H-M):
3m(32/m) - Hexagonal Scalenohedral
Space Group:
P31c
Cell Parameters:
a = 5.982 Å, c = 11.509 Å
Ratio:
a:c = 1 : 1.924
Unit Cell V:
356.67 ų
Z:
2
Morphology:
No forms observed.
Twinning:
No twinning observed.
Crystal Structure
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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) |
|---|---|---|---|---|---|---|---|
| 0009198 | Murchisite | Jellinek F (1957) The structures of the chromium sulphides Acta Crystallographica 10 620-628 | ![]() | 1957 | synthetic | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 4.724 Å | (31) |
| 2.991 Å | (59) |
| 2.654 Å | (86) |
| 2.074 Å | (100) |
| 1.727 Å | (86) |
| 1.327 Å | (20) |
| 1.105 Å | (37) |
Comments:
Calculated data.
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 2: Planetesimal differentiation and alteration | 4.566-4.550 |
| 6 : Secondary asteroid phases | 4.566-4.560 |
Type Occurrence of Murchisite
General Appearance of Type Material:
The type material is one subhedral crystal, 1.3 × 4 µm in size.
Place of Conservation of Type Material:
National Museum of Natural History (Smithsonian Institution), Washington, D.C., USA, USNM 7507.
Geological Setting of Type Material:
CM carbonaceous chondrite meteorite.
Associated Minerals at Type Locality:
Synonyms of Murchisite
Other Language Names for Murchisite
Dutch:Murchisiet
German:Murchisit
Common Associates
Associations Based on Photo Data:
| 1 photo of Murchisite associated with Schreibersite | (Fe,Ni)3P |
| 1 photo of Murchisite associated with Native Iron | Fe |
Related Minerals - Strunz-mindat Grouping
| 2.CB. | Richardsite | Zn2CuGaS4 |
| 2.CB. | Okruginite | Cu2SnSe3 |
| 2.CB. | Hanswilkeite | KFeS2 |
| 2.CB. | Auroselenide | AuSe |
| 2.CB. | Ruizhongite | (Ag2◻)Pb3Ge2S8 |
| 2.CB. | Agmantinite | Ag2MnSnS4 |
| 2.CB. | Tolstykhite | Au3S4Te6 |
| 2.CB. | Gachingite | Au(Te1-xSex) |
| 2.CB.05a | Hawleyite | CdS |
| 2.CB.05 | 'UM1998-15-S:CuFeZn' | Cu2Fe3Zn5S10 |
| 2.CB.05a | Coloradoite | HgTe |
| 2.CB.05a | Metacinnabar | HgS |
| 2.CB.05a | Tiemannite | HgSe |
| 2.CB.05a | Sphalerite | ZnS |
| 2.CB.05b | Sakuraiite | (Cu,Zn,Fe)3(In,Sn)S4 |
| 2.CB.05c | Polhemusite | (Zn,Hg)S |
| 2.CB.05a | Rudashevskyite | (Fe,Zn)S |
| 2.CB.05a | Stilleite | ZnSe |
| 2.CB.05a | Ishiharaite | (Cu,Ga,Fe,In,Zn)S |
| 2.CB.07a | 'Unnamed (Cu-Mn-Sn Sulphide)' | Cu2MnSnS4 |
| 2.CB.07a | Shenzhuangite | NiFeS2 |
| 2.CB.10b | Talnakhite | Cu9(Fe,Ni)8S16 |
| 2.CB.10b | Haycockite | Cu4Fe5S8 |
| 2.CB.10a | Lenaite | AgFeS2 |
| 2.CB.10a | Gallite | CuGaS2 |
| 2.CB.10a | Roquesite | CuInS2 |
| 2.CB.10a | Eskebornite | CuFeSe2 |
| 2.CB.10a | 'UM1984-30-S:CuFeSn' | Cu2Fe2Sn3S7 |
| 2.CB.10c | Omariniite | Cu8Fe2ZnGe2S12 |
| 2.CB.10a | Chalcopyrite | CuFeS2 |
| 2.CB.10a | 'Unnamed (Cu-Zn-In Sulphide)' | CuZn2InS4 |
| 2.CB.10b | Mooihoekite | Cu9Fe9S16 |
| 2.CB.10a | Laforêtite | AgInS2 |
| 2.CB.10b | Putoranite | Cu1.1Fe1.2S2 |
| 2.CB.15a | Velikite | Cu2HgSnS4 |
| 2.CB.15c | 'UM2006-11-S:CuFeGeZn' | Cu8(Fe,Zn)3Ge2S12 (?) |
| 2.CB.15a | Hocartite | Ag2(Fe2+,Zn)SnS4 |
| 2.CB.15a | Kësterite | Cu2ZnSnS4 |
| 2.CB.15a | Pirquitasite | Ag2ZnSnS4 |
| 2.CB.15a | Stannite | Cu2FeSnS4 |
| 2.CB.15c | Stannoidite | Cu+6Cu2+2(Fe2+,Zn)3Sn2S12 |
| 2.CB.15b | Mohite | Cu2SnS3 |
| 2.CB.15a | Černýite | Cu2CdSnS4 |
| 2.CB.15a | Idaite | Cu5FeS6 |
| 2.CB.15a | Ferrokësterite | Cu2FeSnS4 |
| 2.CB.15a | Kuramite | Cu3SnS4 |
| 2.CB.17a v | 'Arsenic-bearing Renierite' | Cu11GeAsFe4S16 |
| 2.CB.20 | Mawsonite | Cu6Fe2SnS8 |
| 2.CB.20 | Chatkalite | Cu6FeSn2S8 |
| 2.CB.30 | 'Frieseite' | Ag2Fe5S8 (?) |
| 2.CB.30 | Nekrasovite | Cu26V2(Sn,As,Sb)6S32 |
| 2.CB.30 | 'Argyropyrite' | near Ag2Fe7S11 |
| 2.CB.30 | Maikainite | Cu20(Fe,Cu)6Mo2Ge6S32 |
| 2.CB.30 | Colusite | Cu13VAs3S16 |
| 2.CB.30 | Germanite | Cu13Fe2Ge2S16 |
| 2.CB.30 | Germanocolusite | Cu26V2(Ge,As)6S32 |
| 2.CB.30 | Stibiocolusite | Cu13V(Sb,Sn,As)3S16 |
| 2.CB.30 | Ovamboite | Cu20(Fe,Cu,Zn)6W2Ge6S32 |
| 2.CB.35a | Morozeviczite | (Pb,Fe)3Ge1-xS4 |
| 2.CB.35a | Renierite | (Cu+,Zn)11Fe4(Ge4+,As5+)2S16 |
| 2.CB.35a | Hemusite | Cu6SnMoS8 |
| 2.CB.35b | Catamarcaite | Cu6GeWS8 |
| 2.CB.35a | Vinciennite | Cu+7Cu2+3Fe2+2Fe3+2Sn(As,Sb)S16 |
| 2.CB.35a | Kiddcreekite | Cu6SnWS8 |
| 2.CB.35a | Polkovicite | (Fe,Pb)3(Ge,Fe)1-xS4 |
| 2.CB.40 | Lautite | CuAsS |
| 2.CB.42 | Lingbaoite | AgTe3 |
| 2.CB.45 | Cadmoselite | CdSe |
| 2.CB.45 | Rambergite | MnS |
| 2.CB.45 | Buseckite | (Fe,Zn,Mn)S |
| 2.CB.45 | Maletoyvayamite | Au3Se4Te6 |
| 2.CB.45 | Greenockite | CdS |
| 2.CB.45 | Wurtzite | (Zn,Fe)S |
| 2.CB.50 | 'Zincselenide' | ZnSe |
| 2.CB.50 | Wassonite | TiS |
| 2.CB.52 | 'Dzhezkazganite' | ReMoCu2PbS6 ? |
| 2.CB.55b | Isocubanite | CuFe2S3 |
| 2.CB.55a | Cubanite | CuFe2S3 |
| 2.CB.60 | Raguinite | TlFeS2 |
| 2.CB.60 | Picotpaulite | TlFe2S3 |
| 2.CB.65 | Argentopyrite | AgFe2S3 |
| 2.CB.65 | Sternbergite | AgFe2S3 |
| 2.CB.70 | Sulvanite | Cu3VS4 |
| 2.CB.75 | Vulcanite | CuTe |
| 2.CB.80 | Empressite | AgTe |
| 2.CB.85 | Muthmannite | AuAgTe2 |
Other Information
Notes:
Not fluorescent under electron microprobe and SEM beams.
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 Murchisite
mindat.org URL:
https://www.mindat.org/min-42447.html
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References for Murchisite
Reference List:
Williams, P. A., Hatert, F., Pasero, M., Mills, S. (2010) New minerals and nomenclature modifications approved in 2010, CNMNC Newsletter No 2. Mineralogical Magazine, 74 (2) 375-377 doi:10.1180/s0026461x00056036
Localities for Murchisite
Showing 1 localities.
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.
Australia (TL) | |
| Williams et al. (2010) +1 other reference |
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The
Murchison meteorite, Murchison, City of Greater Shepparton, Victoria, Australia