Cohenite R100076

Name: Cohenite
RRUFF ID: R100076
Ideal Chemistry: CFe3
Locality: Asuk, Disko, West Greenland, Greenland
Source: Michael Scott S101369 [view label]
Owner: RRUFF
Description: Polished thick section associated with native iron
Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis.
Mineral Group: [ Perovskite (38) ]
RRUFF ID: R100076.2
Sample Description: Microprobe Fragment, the bluish regions are native iron, and the red lines are cracks filled with carbon, probably during sample preparation.
Measured Chemistry: Fe2.96Ni.02C, normalized to 1 carbon
Microprobe Data File: [ Download Excel File ]
Sample Description: Unoriented Raman on the primary sample

  To download sample data,
  please select a specific
  orientation angle.

Direction of polarization of laser relative to fiducial mark:
X Min:    X Max:    X Sort:
RRUFF ID: R100076
Sample Description: Unoriented Raman on the primary sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
RRUFF ID: R100076.9
Sample Description: Single crystal, powder profile is calculated
Cell Refinement Output: a: 4.529(2)Å    b: 5.087(2)Å    c: 6.745(2)Å
alpha: 90°    beta: 90°    gamma: 90°   Volume: 155.42(5)Å3    Crystal System: orthorhombic
  File Type Information Close
Calculated diffraction file.

  File Type Information Close
Output file from the Bruker D8 Advance instrument. Includes device headers and XY data.

X Min:    X Max:    X Sort:
REFERENCES for Cohenite

American Mineralogist Crystal Structure Database Record: [view record]

Anthony J W, Bideaux R A, Bladh K W, and Nichols M C (1990) Handbook of Mineralogy, Mineral Data Publishing, Tucson Arizona, USA, by permission of the Mineralogical Society of America. [view file]

Weinschenk E (1889) Ueber einige Bestandtheile des Meteoreisens von Magura, Arva, Ungarn, Annalen des Kaiserlich-Königlichen Naturhistorischen Hofmuseums, 4, 93-101   [view file]

Hendricks B S (1930) The crystal structure of cementite, Zeitschrift für Kristallographie, 74, 534-545   [view file]

Shimura S (1930) 82. A study on the structure of cementite, Proceedings of the Japan Academy, 6, 269-271   [view file]

Westgren A (1932) Cementitens kristallstruktur, Jernkontorets Annaler, 1932, 457-468   [view file]

Lipson H, Petch N J, (1940) The crystal structure of cementite, Fe3C, The Journal of the Iron and Steel Institute (London), 142, 95-103

Löhberg K (1961) Der Zementit Fe3C als geordneter Substitutionsmischkristall, Naturwissenschaften, 48, 46-46

Aronsson B, Rundqvist S (1962) Structural features of some phases related to cementite, Acta Crystallographica, 15, 878-887

Gardin A I (1962) An electron-diffraction study of the structure of cementite, Soviet Physics - Crystallography, 7, 694-700   [view file]

Meinhardt D, Krisement O (1962) Strukturuntersuchungen an Karbiden des Eisens, Wolframs und Chroms mit thermischen Neutronen, Archiv für das Eisenhüettenwesen, 33, 493-499

Lyashchenko B G, Sorokin L M (1963) Determination of the position of carbon in cementite by the neutron diffraction method, Soviet Physics - Crystallography, 8, 300-304   [view file]

Herbstein F H, Smuts J (1964) Comparison of X-ray and neutron-diffraction refinements of the structure of cementite Fe3C, Acta Crystallographica, 17, 1331-1332

Fasiska E J, Jeffery G A (1965) On the cementite structure, Acta Crystallographica, 19, 463-471

Brett R (1967) Cohenite: its occurrence and a proposed origin, Geochimica et Cosmochimica Acta, 31, 143-159

Bird J M, Weathers M S (1977) Native iron occurrences of Disko Island, Greenland, The Journal of Geology, 85, 359-371

Fruchart D, Chaudouet P, Fruchart R, Rouault A, Senateur J P (1984) Etudes structurales de composés de type cémentite: effet de l'hydrogène sur Fe3C suivi par diffraction neutronique. Spectrométrie mössbauer sur FeCo2B et Co3B dopés au 57Fe, Journal of Solid State Chemistry, 51, 246-252

Wood I G, Vočadlo L, Knight K S, Dobson D P, Marshall W G, Price G D, Brodholt J (2004) Thermal expansion and crystal structure of cementite, Fe3C, between 4 and 600 K determined by time-of-flight neutron powder diffraction, Journal of Applied Crystallography, 37, 82-90

David B, Schneeweiss O, Mashlan M, Šantavá E, Morjan I (2007) Low-temperature magnetic properties of Fe3C/iron oxide nanocomposite, Journal of Magnetism and Magnetic Materials, 316, 422-425

Mitchell R H, Welch M D, Chakhmouradian A R (2017) Nomenclature of the perovskite supergroup: A hierarchical system of classification based on crystal structure and composition, Mineralogical Magazine, 81, 411-461   [view file]