Micas from mariupolite of the Oktiabrski massif (SE Ukraine): An insight into the host rock evolution – Geochemical data supported by Raman microspectroscopy

The transformation of nepheline and albite into sodalite in pegmatitic mariupolite of the Oktiabrski Massif (SE Ukraine)

“…Members of the biotite series, K-feldspar, pyrochlore-group minerals, sodalite, natrolite, aegirine, cancrinite, muscovite and Fe-bearing chlorite all appear as subordinate components. Dark mica forms well preserved flakes or tiny crystals forming fan-like textures [23]. K-feldspar forms large tabular crystals with well-developed cleavages along (0 0 1) and (0 1 0).…”