Fig. 1
From: High precision measurement of trace F and Cl in olivine by electron probe microanalysis
a Smoothed averaged accumulated spectral scans of San Carlos olivine, natural olivine (Ol-1), and anorthite at the F Kα peak acquired with PC1 diffraction crystal on CAMECA SXFive microprobe. Accelerating voltage = 20 kV; beam current = 200 nA; beam diameter = 10 μm; dwell time = 500 ms; step = 10 (Sinθ * 105); accumulation number = 5; and differential mode: base line = 2300 mV, window = 2170 mV. b Smoothed averaged accumulated spectral scans of San Carlos olivine and natural olivine (Ol-2) at the Cl Kα peak acquired with LPET diffraction crystal on CAMECA SXFive microprobe. Accelerating voltage = 20 kV; beam current = 400 nA; beam diameter = 5 μm; dwell time = 500 ms; step = 5 (Sinθ * 105); accumulation number = 5; and integral mode. Mineral abbreviations are from Whitney and Evans (2010)