%0 Journal Article %T Phase transitions of ferruginous minerals in the course of thermal processing of feldspar-quartz raw materials from the Sobótka region (Lower Silesia) %A Lewicka, Ewa %J Gospodarka Surowcami Mineralnymi %V 33 %N 1 %P 93-110 %@ 2299-2324 %D 2017-03-01 %I De Gruyter Open %~ DeepDyve