Fig. 4

Classification diagrams for A feldspar [Ab – An – Or plot; Deer et al., 1992, page 2; Dana et al., 1993, page 532], B pyroxene [En – Wo – Fs (Mg₂Si₂O₆ – Ca₂Si₂O₆ – Fe₂Si₂O₆) plot; Morimoto, 1988] C calcium amphibole [^A(Na + K + 2Ca – ^C(Al + Fe³⁺ + 2Ti) plot; Hawthorne et al., 2012], D–E chlorite [Fe/(Fe + Mg) – Si plot (after Hey, 1954 adapted to Sun et al., 2019); Mg – Fe – ^VI(Al + Cr + Fe³⁺) plot (Zane & Weiss, 1998)], F pumpellyite [Fe_tot – Mg – Al plot (adapted after Passaglia & Gottardi, 1973; Coombs et al., 1976)] from the basaltic volcaniclastics from Mt. Ivanščica. The compositional fields of pumpellyite from the East Taiwan Ophiolite (zeolite facies), the Olympic Peninsula (prehnite–pumpellyite facies) and the Taveyannaz Formation (upper prehnite–pumpellyite and pumpellyite– actinolite facies) were taken from Mével (1981), Coombs et al. (1976) and Rahn et al. (1994)