February 2015    Print this article

New results to be released for the first time at PDAC 2015

Patrice Roy
Ministère de l’Énergie et des Ressources naturelles

The Ministère de l’Énergie et des Ressources naturelles (MERN) will take advantage of the 2015 convention of the Prospectors and Developers Association of Canada (PDAC 2015) to release the results of two new surveys of indicator minerals and two geophysical surveys carried out in the area covered by the Plan Nord. More information about Québec’s mineral potential will be available at the Québec booth, no. 222-223.

Indicator minerals

Between 2010 and 2013, the Bureau de la connaissance géoscientifique du Québec (BCGQ) conducted a bedrock mapping project using drilling and the systematic sampling of glacial deposits in the north of the Abitibi Subprovince. Since 2012, the BCGQ has also been working on a Quaternary mapping and surface deposit (till and esker) sampling project in the Southeastern Churchill Province south of Ungava Bay. In areas of deep sedimentary cover such as Abitibi or the Ungava lowlands, the use of sedimentary prospecting tools to support bedrock mapping is generally an effective way to assess mineral potential.

Overall, the two projects resulted in the analysis of almost 2,000 samples. The results include geochemical analyses of the till matrix and the collection of indicator minerals from heavy metal concentrates. In addition, a numerical analysis taking till, lake sediment and bedrock geochemistry into account was carried out to check the correlation between various anomalies and generate robust targets. For the northern sector in the Abitibi Subprovince, orogenic gold and VMS deposits will be the main focus, while for the Churchill Core Zone, Ni-Cu-PGE metallogenic contexts associated with ultramafic rock, metamorphosed massive sulphides and rare earths will be targeted. The results will also be published in the form of a “Pro” document and the analyses will be made available in the SIGÉOM database.

Geophysical surveys

The two geophysical surveys conducted by the BCGQ are an aeromagnetic survey and a gamma-ray spectrometry survey of the Rivière Brochant and Rivière Buron sectors at the boundary of the Superior and Churchill sectors on the western shore of Ungava Bay. These aerial surveys cover all or part of 35 NTS 1:50 000 sheets, a total area of 23,398 km2. Two reports (DP 2015-01 and DP 2015-02) presenting the technical aspects of the surveys, 1:50 000 geophysical maps, and the associated digital data will be published on March 1st on SIGÉOM.

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