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Article: Alkaline mafic and ultramafic lamprophyres from the Aillik Bay area, Labrador.

TitleAlkaline mafic and ultramafic lamprophyres from the Aillik Bay area, Labrador.
Authors
Issue Date1986
PublisherN R C Research Press. The Journal's web site is located at http://www.nrc.ca/cgi-bin/cisti/journals/rp/rp2_desc_e?cjes
Citation
Canadian Journal Of Earth Sciences, 1986, v. 23 n. 12, p. 1902-1918 How to Cite?
AbstractThe Aillik Bay lamprophyre dyke swarm comprises abundant sannaites, plus rarer olivine sannaites, aillikites and carbonatites. Sannaites are characterized by phenocrysts of Ti-Al titansalite plus rare olivine and phlogopite in a groundmass dominated by pyroxene, biotite, titanomagnetite and K-feldspar; minor mineral phases may include apatite, nepheline, analcite, carbonate, rutile and pyrite. Most sannaites contain well developed leucocratic ocelli, which are commonly zoned. Olivine sannaites are similar, but olivine (Fo77-85) is more abundant, and ocelli are rare. Both types occur together as banded dykes, and calculations support the suggestion of a common parental melt. Aillikites have zoned phenocrysts of olivine (Fo71-87) and mica in a groundmass of carbonate, apatite, mica, titanomagnetite and perovskite. Carbonatite dykes usually exhibit textures with features akin to those of the aillikites. The mineralogical and geochemical characteristics of the aillikites are distinct from those of kimberlites. New data are used to support one of several viable models for the generation of all dyke-rock types by partial melting of LREE-enriched mantle at depths of 90-110 km. -J.M.H.
Persistent Identifierhttp://hdl.handle.net/10722/178157
ISSN
2015 Impact Factor: 1.19
2015 SCImago Journal Rankings: 0.811

 

DC FieldValueLanguage
dc.contributor.authorMalpas, Jen_US
dc.contributor.authorFoley, SFen_US
dc.contributor.authorKing, AFen_US
dc.date.accessioned2012-12-19T09:43:07Z-
dc.date.available2012-12-19T09:43:07Z-
dc.date.issued1986en_US
dc.identifier.citationCanadian Journal Of Earth Sciences, 1986, v. 23 n. 12, p. 1902-1918en_US
dc.identifier.issn0008-4077en_US
dc.identifier.urihttp://hdl.handle.net/10722/178157-
dc.description.abstractThe Aillik Bay lamprophyre dyke swarm comprises abundant sannaites, plus rarer olivine sannaites, aillikites and carbonatites. Sannaites are characterized by phenocrysts of Ti-Al titansalite plus rare olivine and phlogopite in a groundmass dominated by pyroxene, biotite, titanomagnetite and K-feldspar; minor mineral phases may include apatite, nepheline, analcite, carbonate, rutile and pyrite. Most sannaites contain well developed leucocratic ocelli, which are commonly zoned. Olivine sannaites are similar, but olivine (Fo77-85) is more abundant, and ocelli are rare. Both types occur together as banded dykes, and calculations support the suggestion of a common parental melt. Aillikites have zoned phenocrysts of olivine (Fo71-87) and mica in a groundmass of carbonate, apatite, mica, titanomagnetite and perovskite. Carbonatite dykes usually exhibit textures with features akin to those of the aillikites. The mineralogical and geochemical characteristics of the aillikites are distinct from those of kimberlites. New data are used to support one of several viable models for the generation of all dyke-rock types by partial melting of LREE-enriched mantle at depths of 90-110 km. -J.M.H.en_US
dc.languageengen_US
dc.publisherN R C Research Press. The Journal's web site is located at http://www.nrc.ca/cgi-bin/cisti/journals/rp/rp2_desc_e?cjesen_US
dc.relation.ispartofCanadian Journal of Earth Sciencesen_US
dc.titleAlkaline mafic and ultramafic lamprophyres from the Aillik Bay area, Labrador.en_US
dc.typeArticleen_US
dc.identifier.emailMalpas, J: jgmalpas@hku.hken_US
dc.identifier.authorityMalpas, J=rp00059en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.scopuseid_2-s2.0-0022853544en_US
dc.identifier.volume23en_US
dc.identifier.issue12en_US
dc.identifier.spage1902en_US
dc.identifier.epage1918en_US
dc.publisher.placeCanadaen_US
dc.identifier.scopusauthoridMalpas, J=7006136845en_US
dc.identifier.scopusauthoridFoley, SF=7101864035en_US
dc.identifier.scopusauthoridKing, AF=7403372980en_US

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