Szakáll Sándor - Jánosi Melinda: Minerals of Hungary (Topographia Mineralogica Hungariae 4. Miskolc, 1996)

border of the inclusions and the host andésites a contact metamorphic type of mineral association (almandine, grossular, andradite, corundum, diopside, gehlenite, epidote, magnetite and clintonite) formed. These altered inclusions may occasionally reach fist-size as at Pomáz and Dunabogdány. Fig. 48 STILBITE (0.5 cm xl) Dunabogdány Cavity and fracture filling hydrothermal and autopneumatolitic minerals are usually represented by carbonates (generally calcite, more rarely aragonite), rock-forming minerals (hornblende, augite, plagioclase), or oxides (hematite, tridymite). Only at very few quarries may a hydrothermal assemblage with zeolites be found. It is true to say of these that the one on Csódi Hill at Dunabogdány is well known internationally. This andésite laccolith has been mined since the last century for roadstone, general buildingstone, and for ornamental stone. More recently it has been used largely for decorative purposes and facings. Of the splendid and beautiful zeolites: pink chabazite, including occasional large crystals of the variable variety of chabazite 'phacolite' (up to 15 cm); a little stilbite; several cms wide spheroidal crystals of stellerite, and clear white, occasionally up to a cm