Kaszab Zoltán (szerk.): A Magyar Természettudományi Múzeum évkönyve 72. (Budapest 1980)

Örkényi-Bondor, L.: Andesite agglomerate from Zebegény village, Börzsöny Mountains (Hungary)

Table 1. Mineralogical compositions of rocks 1/71 2/71 5/71 Samples 8/71 9/71 10/71 11/71 13/71 15/71 4/75 14/75 Groundmass 38.4 32.2 35.4 27.3 36.8 48.9 52.5 34.8 40.2 33.2 53.9 Opaque 6.4 3.7 3.6 4.3 6.9 4.0 5.8 7.2 10.3 10.0 2.2 Plagioclase 35.6 40.9 33.7 40.3 29.9 25.9 27.4 45.7 33.2 37.5 27.3 Pyroxene 4.0 13.9 6.9 10.9 7.1 1.7 5.0 6.0 5.2 6.6 1.2 Amphibole — 2.6 2.5 0.5 — 12.9 4.2 1.2 4.4 — 11.6 Biotite —. — — — — — — — 3.0 — — Tridymite 9.5 — 11.4 — — — — 1.0 — — •— Quartz — — — — — — — — — 8.6 — Cristobalite — — — — 3.0 1.7 — — — — 0.4 Serpentine — — 0.9 — 12.8 1.1 — — — — — Clay-minerals — — —• 9.2 — —— — — — •— Hole 6.3 6.7 5.4 7.5 3.5 3.

S 5.1 4.0 3.8 4.0 3.4 Total 100.2 100.0 100.1 100.0 100.0 100.0 100.0 99.9 100.1 99.9 100.0