Mineralogy - Origin of Potassium-rich Silica-deficient Igneous Rocks - page 14

Table 2.1 Analyses of leucite from different localities
SiO 2

FeO a

TiO 2 Al 2 O 3 Fe 2 O 3 MgO CaO BaO Na 2 O 2 O Total

1 54.54 0.08 21.13 0.36 0.05 21.33

97.49

2 55.42 0.04 23.71 0.51 0.027 21.27

101.15

3 54.16 0.05 21.85 0.76 0.11 22.59

99.27

4 55.90 0.08 20.70 1.27 0.18 0.05 0.01 0.33 21.20

99.72

5 56.00 0.14 21.50 0.58 0.06 0.03 0.01 0.22 21.20

99.74

6 54.00 0.13 22.30 0.63 0.08 0.09 0.42 21.60

99.25

7 54.47 23.42 0.40 0.01 0.12 21.12

99.54

8 54.18 23.64 0.44 0.03 0.20 20.25

99.78

9 57.96 18.38 2.90 0.04 0.04 21.13

100.45

10 59.54 18.27 2.67 0.18 19.60

100.26

11 57.71 19.62 2.03 0.09 0.05 20.77

100.27

12 58.60 18.70 2.20 0.04 0.06 20.70

100.30

13 56.30 20.30 2.00 0.03 0.03 21.50

100.20

14 55.00 0.23 23.70 0.45 0.07 20.70

100.15

15 54.70 0.17 24.20 0.52 0.21 20.14

99.94

16 55.50 0.16 22.20 0.95 0.13 21.04

99.98
(continued)