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 1. Average chemical composition, M-values, CIPW norms and Differentiation index (THORNTON-TUTTLE) of volcanic rock-types of Mecsek Mts. (Symbols are explained in Fig. 1) (* = standard deviation) BSN BAS TEP TBA BAN N 2 16 2 3 11 SiO, TiO, Al

2

O

a Fe

8

0

8 FeO MnO MgO CaO Na

2

0 K

2

Ö P

2

O

5 44.20 (0.4)* 3.82 (0.4) 13.51 (1.8) 2.17 (0.1) 10.90 (0.6) 0.16 (0.1) 9.20 (2.0) 11.35 (0.6) 3.04 (0.3) 1.17 (0.6) 0.44 (0.2) 48.59 (1.8) 4.25 (.09) 13.29 (1.9) 2.13 (0.2) 10.65 (1.2) 0.23 (0.2) 7.30 (1.9) 9.66 (1.3) 2.27 (0.4) 1.11 (0,3) 0.51 (0.7) 48.65 (0.1) 3.69 (1.9) 16.98 (1.2) 1.95 (0.1) 9.76 (0.5) 0.21 (0.2) 3.34 (0.8) 7.19 (0.6) 5.54 (0.8) 2.08 (0.8) 0.58 (0) 51.56 (0.7) 3.01 (0.5) 13.23 (1.4) 2.76 (0.1) 13.80 (0.8) 0.41 (0.1) 2.24 (2.1) 6.84 (0.4) 3.98 (0.3) 2.03 (0.4) 0.08 (0.1) 53.79 (1.2) 3.18 (0.7) 12.84 (1.3) 2.04 (0.4) 10.23 (1.9) 0.22 (0.2) 4.22 (1.3) 9.23 (1.3) 2.56 (0.9) 1.24 (0.4) 0.48 (0.4) M 60.07 54.99 37.89 22.44 42.36 CIPW norms q _ 0.59 _ _ 8.76 or 6.91 6.55 12.29 11.99 7.32 ab 10.34 19.20 28.49 33.67 21.66 an 19.76 22.79 15.32 12.23 19.88 ne 8.33 — 9.96 — — wo — — — — di 27.30 17.75 13.8! 18.2 18.93 hy — 20.72 — 10.85 13.33 ol 15.87 — 8.9 3.55 — mt 3.14 3.08 2.82 4.00 2.95 hm — — — — — il 7.25 8.07 7.00 5.71 6.03 tn — — — — — ap 1.04 1.20 1.37 0.18 1.13 D.I. 25.58 26.34 50.74 45.66 37.74