Show simple item record

dc.contributor.authorTomlinson, Emmaen
dc.date.accessioned2019-12-02T17:09:43Z
dc.date.available2019-12-02T17:09:43Z
dc.date.issued2006en
dc.date.submitted2006en
dc.identifier.citationE.L. Tomlinson, A.P. Jones and J.W. Harris, Co-existing fluid and silicate inclusions in mantle diamond, Earth and Planetary Science Letters, 250, 3-4, 2006, 581-595en
dc.identifier.otherYen
dc.identifier.urihttps://www.sciencedirect.com/science/article/pii/S0012821X06005759?via%3Dihub
dc.identifier.urihttp://hdl.handle.net/2262/90946
dc.descriptionPUBLISHEDen
dc.description.abstractWe document the compositions of co-existing silicate macro-inclusions and fluid micro-inclusions in the fibrous coats of eight coated diamonds from the Panda kimberlite (Canada). The mineral inclusions in the diamond coats come from either the peridotite suite (Cr-pyrope, orthopyroxene, olivine and Cr-diopside) or the eclogite suite (omphacite). Therefore, fibrous diamonds grow in the same paragenetic environments as octahedral diamonds. The inclusions document a more fertile source composition (lower Mg# and higher CaO) than for equivalent phases in octahedral diamonds from Panda and worldwide. However, moderate to high Cr2O3 contents in garnet and clinopyroxene inclusions suggest that this apparent fertility is due to a secondary process. Geothermometry of the silicate inclusions yields low equilibration temperatures of 930 to 1010 °C. The co-existing fluid micro-inclusions are dominated by H2O, carbonate and KCl. Fluid inclusions in both the peridotitic and eclogitic samples fall along linear arrays between Fe–Ca–Mg carbonate and KCl. Inclusions in the one eclogitic sample also contain quartz. We suggest that the diamonds have trapped both metasomatised minerals and the metasomatic fluid, and so provide a snap shot of a metasomatic event in the mantle.en
dc.format.extent581-595en
dc.language.isoenen
dc.relation.ispartofseriesEarth and Planetary Science Lettersen
dc.relation.ispartofseries250en
dc.relation.ispartofseries3-4en
dc.rightsYen
dc.subjectCoated diamonden
dc.subjectSilicate inclusionsen
dc.subjectFluid inclusionsen
dc.subjectMetasomatismen
dc.titleCo-existing fluid and silicate inclusions in mantle diamonden
dc.typeJournal Articleen
dc.type.supercollectionscholarly_publicationsen
dc.type.supercollectionrefereed_publicationsen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/tomlinseen
dc.identifier.rssinternalid83524en
dc.identifier.doihttp://dx.doi.org/10.1016/j.epsl.2006.08.005en
dc.rights.ecaccessrightsopenAccess
dc.identifier.rssurihttp://www.sciencedirect.com/science/article/pii/S0012821X06005759en
dc.identifier.orcid_id0000-0002-0646-6640en
dc.contributor.sponsorEngineering and Physical Sciences Research Council (EPSRC)en


Files in this item

Thumbnail
Thumbnail

This item appears in the following Collection(s)

Show simple item record