Sándor Józsa is a geologist (petrologist) and works as assistant professor in the Department of Petrology and Geochemistry, Eötvös Loránd University (ELTE), Budapest, Hungary. In his first archaeometric research started in 1985 he dealt with roman amphorae from Istrian peninsula, Croatia together with György Szakmány by the leadership of Tamás Bezeczky. This prolonged work was recently completed, but within this time period he dealt with very different braches of archaeometry such as petrography of other ceramic materials, polished, chipped and grinding stone tools, building stones, mortars and plasters, as well as with ancient mosaics, mostly with the aim of provenance determination and to the lesser extent to answer different conservational and archaeological questions. At the same time, he has got great experience in field geology, and in preparation of both geological and archaeological samples of very small size, high porosity and very bed consistency. Within the field of geology his main topics are the petrography of crystalline rocks and sandstones, the micromineralogy and the provenance analysis of clastic sediments. Beside participating in different international conferences and teaching in his host university he gave short courses in some of these topics in the University of Padova, Italia and in the Massey University, Palmerston North, New Zealand.