Principal component analysis of magnetite composition from volcanogenic massive sulfide deposits: Case studies from the Izok Lake (Nunavut, Canada) and Halfmile Lake (New Brunswick, Canada) deposits
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- 作者：Sheida Makvandia ; sh.makvandi@gmail.com" class="auth_mail" title="E-mail the corresponding author ; Massoud Ghasemzadeh-Barvarzb ; massoud.ghasemzadeh-barvarz.1@ulaval.ca" class="auth_mail" title="E-mail the corresponding author ; Georges Beaudoina ; Georges.Beaudoin@ggl.ulaval.ca" class="auth_mail" title="E-mail the corresponding author ; Eric C. Grunskyc ; egrunsky@gmail.com" class="auth_mail" title="E-mail the corresponding author ; M. Beth McClenaghand ; bmcclena@nrcan.gc.ca" class="auth_mail" title="E-mail the corresponding author ; Carl Duchesneb ; Carl.Duchesne@gch.ulaval.ca" class="auth_mail" title="E-mail the corresponding author
- 关键词：Magnetite composition ; Volcanogenic massive sulfide deposits ; Izok Lake deposit ; Halfmile Lake deposit ; Geochemical censored data ; Principal component analysis
- 刊名：Ore Geology Reviews
- 出版年：2016
- 出版时间：January 2016
- 年：2016
- 卷：72
- 期：part_P1
- 页码：60-85
- 全文大小：6033 K
文摘
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Magnetite trace element compositions from two VMS deposits, their host rocks, and local glacial sediments are documented.
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The geochemical censored data are investigated using the R-package robCompositions.
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The data were opened using centered-log ratio transformation, and then analyzed using principal component analysis.
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Magnetite grains from different VMS deposits and bedrock lithologies have distinct chemical signatures.
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The chemistry of magnetite in till is useful in VMS deposit exploration in both deposit areas.