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TitleUltramafic cumulates east of Kingnait Fiord, Cumberland Peninsula, Nunavut: possible origin and mineral potential
LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorPercival, J A; Sanborn-Barrie, MORCID logo
SourceGeological Survey of Canada, Current Research (Online) no. 2013-4, 2013, 19 pages, Open Access logo Open Access
LinksCanadian Database of Geochemical Surveys, downloadable files
LinksBanque de données de levés géochimiques du Canada, fichiers téléchargeables
PublisherNatural Resources Canada
Mediaon-line; digital
RelatedNRCan photo(s) in this publication
File formatpdf
NTS16L/04; 16L/05; 26I/01; 26I/02; 26I/07; 26I/08
AreaCumberland Peninsula; Baffin Island
Lat/Long WENS-64.5667 -63.8500 66.3500 66.1667
Subjectsigneous and metamorphic petrology; economic geology; geochemistry; olivine; chromite; ilmenite; amphibole; tremolite; chlorite; igneous rocks; magmatism; ultramafic rocks; mineral potential; petrography; whole rock geochemistry; whole rock analyses
Illustrationslocation maps; photomicrographs; tables; plots
ProgramGEM: Geo-mapping for Energy and Minerals Multiple Metals - Cumberland Peninsula (Baffin Island, Nunavut)
Released2013 03 05
AbstractAn occurrence of ultramafic rocks on central Cumberland Peninsula of Baffin Island consists of coarse-grained, variably layered peridotite with an assemblage of Mg-rich olivine (Fo65-85), chromite, ilmenite, and Mg-amphibole. Olivine is transected by serpentine-filled fractures that are truncated by secondary tremolite and chlorite. Bulk compositions correspond closely to those of unaltered wehrlitic cumulates. Trace-element profiles show enrichment in incompatible elements relative to primitive mantle, and predict a parental magma compositionally resembling ocean island basalt. Intrusive phases related to such plume-related magmatism are known elsewhere for their nickel and PGE potential. Accordingly, although the Kingnait Fiord ultramafic rocks likely relate to rift magmatism of Paleoproterozoic age, exploration models developed for intrusion-hosted nickel sulphide and platinum-reef mineralization in younger systems of similar composition should be applied.

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