Ferric iron in CaTiO₃ perovskite as an oxygen barometer for kimberlitic magmas : experimental calibration and applications

• Main Author: Bellis, Anthony
• Other Authors: Canil, Dante
• Format: Thesis
• Language: English
• Published: 2005
• Subjects: kimberlite; perovskite; UVic Subject Index::Sciences and Engineering::Earth and Ocean Sciences; Lac de Gras; Somerset Island
• Online Access: http://hdl.handle.net/1828/1764

An oxygen barometer to estimate fO2 during the crystallization of kimberlites is developed using the Fe content of perovskite (Pv), a common groundmass phase in these rocks. With increasing fO2, more Fe exists in the kimberlitic liquid as Fe3+, and thus partitions into Pv, which accepts only Fe3+ in...