Discovery of composite diopside-magnetite lamellae in discrete olivine crytals from Colorado Plateau diatremes: indication of former hydrous ringwoodite

Kunihiko Sakamaki1, Yuto Sato2, Edward W Marshall3 and Yoshihide Ogasawara1, (1)Waseda University, Department of Earth Sciences, Tokyo, Japan, (2)University of Tokyo, Bunkyo-ku, Japan, (3)University of Texas at Austin, Austin, TX, United States
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