AT RECENT EUROMINERALS MEETINGS A SERIE OF PRESENTATIONS WAS MADE BY REPRESENTATIVES OF THE MEMBER BODIES. GIVEN HERE, IN SUMMARY FORM, ARE THOSE WHICH RELATE TO GREECE AND SLOVAKIA

摘要

The tectonic structure of Greece is rather complex, six main geotectonic zones containing a wide variety of igneous, sedimentary and metamorphic rocks. From the Palaeozoic (Silurian/Devonian) to the Quaternary the variety of different metallogenic processes that have operated give rise to the considerable number of important deposits of coal, ores and industrial minerals. Hence, in contrast to the relatively small size of the country (approximate area, 132 000 km~2) Greece contains an extraordinary variety of rocks in which some exceptional mineral deposits of commercial value exist. The country possesses world-class deposits of several industrial minerals, notably magnesite, bentonite, asbestos, perlite, pumice and marble. The only world-class deposits in the metallic ore field are the bauxite deposits of central Greece; significant deposits of Ni, Pb-Zn-Cu-Fe (mixed sulphides), Cr and Mn exist and are under exploitation. Quartz, feldspars, kaolin, emery and other minerals are also mined on a more limited scale. Massive deposits of limestone, clays, shists and slates contribute to a flourishing cement industry and very large quantities of construction raw materials (sand, gravel and dimension stone) are also produced.