Kaszab Zoltán (szerk.): A Magyar Természettudományi Múzeum évkönyve 65. (Budapest 1973)

Embey-Isztin, A.: On the problem of graphic intergrowth and normal granitic structure

JANTSKY, B. (1957): A Velencei-hegység földtana. — Geol. Hung., 10: 1-170. KING, B. C. (1948): The form and structural features of aplite and pegmatite dikes. - J. Geol., 56: 459-475. MEHNERT, K. R. (1968) : Migmatites and the origin of granitic rocks. - Amsterdam-London-New York, p. 1-393. RAGUIN, E. (1957): Géologie du Granite. - Paris, p. 1-275. SAVOLAHTI, A. (1962) : The Rapakivi problem and the rules of idiomorphism in minerals. — Compt. Rend. Soc. Géol. Finlande, 34: 33-111. SCHERMERHORN, L. J. G. (1956): Petrogenesis of a porphyritic granite east of Oporto (Portugal). — Tschermaks Mineral. Petrog. Mitt., 6: 73-115. TUTTLE, O. F. &BOWEN, N. L. (1958): Origin of granite in the light of experimental studies in the system NaAlSigOg-KAlSigOa-SiOo-H^O. - 67eoZ. Soc. Am. Mem., 74: 1-153. VENDL, A. (1914): A Velencei-hegység geológiai és petrográfiai viszonyai. — M. Kir. Földt. Int. Évkönyve, 22: 1-170. VENDL, M. (1923): Újabb adatok a Velencei-hegység kőzeteinek ismeretéhez. — Ann. Mus. Nat. Hung., 20: 81-84. Explanation oï plates Plate I Figs. 1-4. - 1 = Graphic structure, + N, M - 32 X. - 2 = Graphic intergrowth of plagioclase-quartz, + N, M — 32 X. — 3 = Granophyric structure, an intermediate stage to normal granitic structure, + N, M = 32 X — 4 = Graphic and granophyric structures in the same K-feldpar crystal, +N, M = 32 X

. Plate I£ Figs. 1—4. — 1 = Lines of inclusions of K-feldspar, continuing in granophyric quartz, ||N, M = 85 X. - 2 = K-feldspar „tongue" in quartz, ||N, M = 85 X

. - 3 = K-feldspar relics in quartz, + N, M = 85x. — 4 = Graphic structure, N, M — 85 X

. Plate III Figs. 1—4. — 1 = Intergranular oligoclase, +N, M = 32 X. — 2 = Oligoclase replacing K-feldspar + N, M = 85 X

. - 3 = Quartz exsolution in oligoclase, + N, M = 200 X

. — 4 = Granophyric quartz cutting intergranular oligoclase (white in middle), +N, M = 85 X. Author's address: A. EMBEY-ISZTIN Mineralogical Department of the; Hungarian Natural History Museum 1088 Budapest, Múzeum körút 14/16. Hungary