Fig. 4From: High precision measurement of trace F and Cl in olivine by electron probe microanalysisComparison of trace F (a) and Cl contents (b) in hornblende standards obtained by optimized EPMA method with reference data. (Error bar = 2 standard deviations). (1) Reference data are from Zhang et al. (2016). (2) Reference data are from Wolff (2014)Back to article page