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Table 1 Feldspar composition

From: Bristen granite: a highly differentiated, fluorite-bearing A-type granite from the Aar massif, Central Alps, Switzerland

Feldspar Plag Plag Plag Kfs Kfs Plag Kfs
Geol. unit Brgr Brgr Brgr Brgr Brgr cAgr cAgr
# Points 11 1 1 24 1 9 7
SiO2 68.45 68.57 67.85 64.45 64.78 68.49 63.43
Al2O3 20.02 19.86 20.39 18.28 18.2 20.23 18.8
FeO 0.07 0.07 bd 0.07 0.11 0.03 0.06
CaO 0.56 0.02 0.94 0.01 0.03 0.67 2.14
Na2O 11.46 11.61 10.64 0.44 0.6 11.52 0.57
K2O 0.13 0.13 0.15 15.97 16.58 0.08 15.07
Total 100.72 100.27 100 99.24a 100.31a 101.03 100.08b
Oxygen 8 8 8 8 8 8 8
Si 2.974 2.987 2.964 2.999 2.995 2.967 2.968
Al 1.025 1.019 1.050 1.003 0.992 1.033 1.037
Fe(2) 0.003 0.003 0.003 0.004 0.001 0.002
Ca 0.026 0.001 0.044 0.000 0.001 0.031 0.001
Na 0.965 0.980 0.901 0.040 0.054 0.967 0.051
K 0.007 0.007 0.008 0.948 0.978 0.004 0.959
An 2.61 0.09 4.61 0.05 0.14 3.10 0.10
Ab 96.67 99.17 94.51 4.02 5.21 96.46 5.11
Or 0.72 0.73 0.88 95.93 94.65 0.44 94.79
  1. aTotal includes 0.1 wt % Rb2O
  2. bTotal includes 2.14 wt% BaO; TiO2, MnO and MgO below detection limit (bd) of ~ 0.05 wt%