TY - JOUR PB - University of Szeged, Department of Mineralogy, Geochemistry and Petrology KW - K?zettan KW - Ásványtan KW - Földtan TI - Clay minerals from Asztagk? of Gyöngyössolymos CY - Szeged JF - Acta mineralogica-petrographica SP - 59 A1 - Mez?si József AV - public UR - http://acta.bibl.u-szeged.hu/24429/ N2 - In the Asztagk? of Gyöngyössolymos at the boundary of the quartzite and the tuff there occurs, a colloidal substance which mostly consists of halioysite, limonite and hematite. The site of the exotherm peak appearing at 900?1000°C varies according to the amount of the iron content. The greater the amount of iron the lower the temperature at which the exotherm peak appears. The shift of the exotherm peak also takes place in the case of artificial mixtures. N1 - Bibliogr.: p. 65-66. ; ill. ; összefoglalás angol nyelven ID - acta24429 Y1 - 1957/// VL - 10 EP - 66 SN - 0365-8066 ER -