Synthesis and preliminary characterization ferrihydrite, feroxyhyte and akaganéite containing high amounts of Si: new precursors for the thermal formation of amorphous iron(III) oxide polymorphs? / Gabriela PIECZARA, Olaf Borkiewicz, Maciej MANECKI // W: Herl'any 2017 : international conference of Young geologist : March 29\textsuperscript{th}–April 3\textsuperscript{rd}, 2017, Dobczyce n. Kraków, Poland : book of abstracts. — Kraków : Wydawnictwo Mineralogiczne MINERALPRESS, cop. 2018. — ISBN: 978-83-933330-1-1. — S. [50–51]. — Bibliogr. s. [51]