title: Pseudobrookite from Active Fumaroles of the Tolbachik Volcanic Massif (Kamchatka). Chemistry of Pseudobrookite-Group Minerals and Its Indicator Role
abstract: For the first time there is characterized pseudobrookite from deposits of active volcanic fumaroles Arsenatnaya and Yadovitaya of the Tolbachik volcanic massif (Kamchatka). Chemical composition of pseudobrookite-group minerals and isomorphism in these oxides of different origin were studied on the base of 203 analyses (literature data and original analyses of 40 samples) from 44 localities. It is shown that at the near-surface levels pseudobrookite crystallized mainly with composition chemically
journal: Zapiski RMO (Proceedings of the Russian Mineralogical Society)