Abstract
This research project aims the characterization of the chemical composition of cuspidine-wöhlerite, mosandrite, and eudialyte mineral groups. These are rare Zr-, Ti-, Nb- and REE-rich sorosilicates and cyclosilicates and are restricted to agpaitic alkaline rocks. Analytical procedures will combine micro-beam techniques, such as electron microprobe, for determination of major and minor ele…