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Dating hypogene iron mineralization events in Archean BIF at Weld Range, Western Australia: insights into the tectonomagmatic history of the northern margin of the Yilgarn Craton

Yong-jun LU, Timothy J. Ivanic, Thomas Angerer, Steffen Hagemann, Paul Duuring, Malcolm Roberts, João O. S. Santos, Jinwoo Choi, Imogen O. H. Fielding

This study is the first to constrain the absolute timing of hypogene iron mineralization in Archean BIF located in the Yilgarn Craton. In situ SHRIMP U–Th–Pb geochronology on xenotime and monazite grains has been used to constrain the age of hypogene magnetite replacement ores at the Beebyn deposit and hypogene magnetite vein ores at the Madoonga deposit in the Weld Range study area.