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Murchisite

Collectors Summary

Crystal System trigonal, P31c

Additional information / Summary

Ein Mineral vom Murchison-Meteorit, der in einem Meteoritenschauer am 28. September 1969 in der Nähe von Murchison, Victoria, Australien niederging.

Chemism

Chemical formula

Cr5S6

Chemical composition

Chrom, Schwefel

Unit weight: 452.3738 u; Number of atoms in the formula: 11

Info

Empirical formula:

Cr5S6

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Sulfur

S

42.53

6

54.55

32.0655000

192.3930000

Chromium

Cr

57.47

5

45.45

51.9961600

259.9808000

Analysis wt%

S : 42.87, Cr : 53.32, Fe : 1.14, V : 1.44 (Ref: American Mineralogist 2011)

Strunz 9th edition incl. updates

2.DA.

2: Sulfide und Sulfosalze (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide, Sulfarsenite, Sulfantimonite, Sulfbismuthite)
D: Metallsulfide mit M:S = 3:4 und 2:3
A: M:S = 3:4

Lapis Classification

II/D.05-005

II: SULFIDE UND SULFOSALZE (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide)
D: Sulfide mit Metall : S,Se,Te < 1:1

Classification by Hölzel

2.CC.410

2: SULFIDES
C: Sulfides (etc) with Me/S=1/1
C: With Pd,Pt, etc. - Coordination Number ~[4], Planar
4: Pyrrhotite-Group

IMA status

anerkannt - April 2010, Murchisite, IMA 2010-003. CNMNC Newsletter, April 2010, page 377; Mineralogical Magazine, 74, 375-377.

Mineral status

anerkanntes Mineral

Crystallography

Crystal System

trigonal

Class (H-M)

3m

Space Group number

163

Space Group

P31c

Cell parameters a (Å)

5.982

Cell parameters b (Å)

-

Cell parameters c (Å)

11.509

Cell parameters a/b or c/a

1.924

Cell parameters c/b

-

Z

2

Volumne (ų)

356.665

Kristall structure

Struktur einer synthetischen Phase ist bekannt

X-Ray Powder Diffraction

4.724(27), 3.083(16), 2.991(62), 2.877(32), 2.654(77), 2.074(77), 1.727(82), 1.327(20)

XRD chart Murchisite

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Crystal Structure 3D

Open larger view

Physical Properties

Density (g/cm³)

4.212 ( ρ calc. Mineralienatlas )

Preface

Author (Name, Year)

Chi Ma, 2010

References

Ma C, Beckett JR, Rossman GR (2010) Discovery of a new chromium sulfide mineral, Cr5S6, in Murchison. Meteoritics & Planetary Science, 45, Suppl, Axxx.

http://www.its.caltech.edu/chima/

Murchisite, IMA 2010-003. CNMNC Newsletter, April 2010, page 377; Mineralogical Magazine, 74, 375-377.

Other languages

German

Murchisit

English

Murchisite

Simplified Chinese

铬硫矿

CNMNC (IMA)-Number

IMA 2010-003

CNMNC symbol

Symbol

Mur

Locations with GPS information