| Title | Ultramafic cumulates east of Kingnait Fiord, Cumberland Peninsula, Nunavut: possible origin and mineral potential |
| Download | Downloads |
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| Licence | Please note the adoption of the Open Government Licence - Canada
supersedes any previous licences. |
| Author | Percival, J A; Sanborn-Barrie, M |
| Source | Geological Survey of Canada, Current Research (Online) no. 2013-4, 2013, 19 pages, https://doi.org/10.4095/292181  Open Access |
| Links | Canadian Database of Geochemical Surveys, downloadable
files
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| Links | Banque de données de levés géochimiques du Canada,
fichiers téléchargeables
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| Image |  |
| Year | 2013 |
| Publisher | Natural Resources Canada |
| Document | serial |
| Lang. | English |
| Media | on-line; digital |
| Related | NRCan photo(s) in
this publication |
| File format | pdf |
| Province | Nunavut |
| NTS | 16L/04; 16L/05; 26I/01; 26I/02; 26I/07; 26I/08 |
| Area | Cumberland Peninsula; Baffin Island |
| Lat/Long WENS | -64.5667 -63.8500 66.3500 66.1667 |
| Subjects | igneous 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 |
| Illustrations | location maps; photomicrographs; tables; plots |
| Program | GEM: Geo-mapping for Energy and Minerals Multiple Metals - Cumberland Peninsula (Baffin Island, Nunavut) |
| Released | 2013 03 05 |
| Abstract | An 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. |
| GEOSCAN ID | 292181 |
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