Matskási István (szerk.): A Magyar Természettudományi Múzeum évkönyve 80. (Budapest 1988)

Harangi, Sz.: Major element chemistry of Lower Cretaceous igneous rock of Mecsek Mountains (Southern Hungary), I.

Table 2. Average chemical compositions, M-values, CIPW norms and Differentiation Index (TKORNTON-TUTTLE) of basaltic-andsajic rock-types of Mecsek Mts. (Symbols are explained in Fig. 2) (* — standard deviation). AB or XI! QT TA C'A TD N 2 6 5 5 16 3 2 Si0

2 44.93 47.33 (0.2)* 48.72 (1.9) 52.45 (1.8) 52.99 (1.4) 52.54 (1.6) 56.05 Ti0

2 3.63 4.57 (0.9) 4.1 (1.2) 3.31 (0.5) 3.45 (0.7) 2.87 (0.4) 2.66 A1

2

0

3 11.68 13.56 (2.0) 13.83 (1.8) 12.13 (1.0) 13.69 (1.5) 17.23 (0.1) 13.4 Fe

2

0

3 2.2 2.13 (0.2) 2.11 (0.2) 2.36 (0.3) 1.97 (0.3) 1.62 (0.3) 1.88 FeO 11.0 10.68 (1.0) 10.56 (1.2) 11.85 (1.3) 9.87 (1.5) 8.14 (1.3) 9.4 MnO 0.15 0.18 (0.1) 0.37 (0.2) 0.3 (0.1) 0.3 (0.1) 0.23 (0.2) 0.49 MgO 11.8 8.67 (1.4) 6.68 (1.5) 5.14 (1.2) 4.19 (1.5) 4.36 (0.7) 3.2 CaO 11.32 9.39 (1.4) 10.15 (0.9) 9.19 (1.2) 8.17 (1.7) 6.32 (0.4) 6.75 Na,0 2.4 2.04 (0.4) 2.29 (0.1) 1.66 (0.6) 3.19 (0.5) 3.43 (0.3) 3.16 K

2

0 0.49 1.16 (0.3) 0.97 (0.4) 0.92 (0.3) 1.81 (0.6) 2.45 (0.2) 1.88 P

2

O

5 0.37 0.48 (0.2) 0.51 (0.3) 0.81 (0.6) 0.86 (0.8) 0.82 (0.1) 1.09 M 65.66 59.13 53.0 43.6 43.08 48.84 37.76 CIPW norms J* q — 0.98 11.16 4.72 1.59 10.8 or 2.89 6.85 5.73 5.43 10.69 14.47 11.11 ab 15.67 17.26 19.37 14.04 26.99 29.02 26.74 an 19.65 24.41 24.59 22.93 17.69 24.38 16.82 ne 2.5 — — — — — di 27.48 15.39 18.34 14.44 14.28 1.32 8.0 by — 19.66 19.22 20.5 14.68 19.49 16.16 Ol 20.79 3.69 — — — — ml 3.18 3.08 3.05 3.42 2.85 2.34 2.72 il 6.89 8.67 7.78 6.28 6.55 5.45 5.05 ap 0.87 1.13 1.2 1.91 2.03 1.94 2.58 D.I. 21.06 24.11 26.08 30.63 42.4 45.08 48.65