The formation of vein-type barite (± base metal, gold) deposits in northern Madagascar and its link with Mesozoic Pangean rifting

Along the boundary between the Precambrian basement and the Permo-Mesozoic sedimentary basin of northernmost Madagascar, an extensive network of epigenetic quartz-barite veins can be found. The veins are extensional in nature and show a polyphase paragenesis. Some of the veins, especially in the nor...

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