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TitleRare metal indicator minerals in bedrock and till at the Strange Lake peralkaline complex, Quebec and Labrador, Canada
AuthorMcClenaghan, M BORCID logo; Paulen, R CORCID logo; Kjarsgaard, I M
SourceCanadian Journal of Earth Sciences vol. 56, no. 8, 2019 p. 857-869,
Alt SeriesNatural Resources Canada, Contribution Series 20180206
PublisherCanadian Science Publishing
Mediapaper; on-line; digital
File formatpdf (Adobe® Reader®); html
ProvinceQuebec; Newfoundland and Labrador
NTS14D/02; 14D/03; 14D/04; 14D/05; 14D/06; 14D/07; 24A/01; 24A/08
AreaLabrador; Lac Brisson
Lat/Long WENS -64.5000 -62.6000 56.5000 56.2000
Subjectseconomic geology; surficial geology/geomorphology; mineralogy; geophysics; Science and Technology; mineral exploration; exploration methods; drift prospecting; mineral deposits; metals; zirconium; yttrium; glacial deposits; tills; bedrock geology; lithology; igneous rocks; intrusive rocks; granites; monzonites; metamorphic rocks; gneisses; glacial history; glaciation; ice flow; sediment transport; sediment dispersal; dispersal patterns; mineralogical analyses; oxides; silicates; phosphates; carbonates; geophysical interpretations; radiometric interpretations; gamma-ray surveys; petrographic analyses; Archean; Strange Lake Intrusion; Mistinibi-Raude Domain; Mistastin Domain; Strange Lake Dispersal Train; ice-flow directions; dispersal trains; Phanerozoic; Cenozoic; Quaternary; Precambrian; Proterozoic
Illustrationslocation maps; geoscientific sketch maps; tables; photographs; photomicrographs
ProgramGEM2: Geo-mapping for Energy and Minerals Hudson/Ungava, Northeastern Quebec-Labrador, surficial geology
Released2019 02 12
AbstractA study of rare metal indicator minerals and glacial dispersal was carried out at the Strange Lake Zr - Y - heavy rare earth element deposit in northern Quebec and Labrador, Canada. The heavy mineral (>3.2 specific gravity) and mid-density (3.0-3.2 specific gravity) nonferromagnetic fractions of mineralized bedrock from the deposit and till up to 50kmdown ice of the deposit were examined to determine the potential of using rare earth element and high field strength element indicator minerals for exploration. The deposit contains oxide, silicate, phosphate, and carbonate indicator minerals, some of which (cerianite, uraninite, fluorapatite, rhabdophane, thorianite, danburite, and aeschynite) have not been reported in previous bedrock studies of Strange Lake. Indicator minerals that could be useful in the exploration for similar deposits include Zr silicates (zircon, secondary gittinsite (CaZrSi2O7), and other hydrated Zr±Y±Ca silicates), pyrochlore ((Na,Ca)2Nb2O6(OH,F)), and thorite (Th(SiO4))/thorianite (ThO2) as well as rare earth element minerals monazite ((La,Ce,Y,Th)PO4), chevkinite ((Ce,La,Ca,Th)4(Fe,Mg)2(Ti,Fe)3Si4O22), parisite (Ca(Ce,La)2(CO3)3F2), bastnaesite (Ce(CO3)F), kainosite (Ca2(Y,Ce)2Si4O12(CO3)·H2O), and allanite ((Ce,Ca,Y)2(Al,Fe)3(SiO4)3(OH)). Rare metal indicator minerals can be added to the expanding list of indicator minerals that can be recovered from surficial sediments and used to explore for a broad range of deposit types and commodities that already include diamonds and precious, base, and strategic metals.
Summary(Plain Language Summary, not published)
The journal paper describes the indicator mineral signature in bedrock and glacial sediments of the large rare earth element deposit at Strange Lake in Quebec and Labrador.

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