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

and pyrite were the commonest ore minerals in veins largely filled with quartz and calcite. Small amounts of other sulfides (stibnite, wurtzite, boulangerite, bournonite, cubanite, cinnabar, and marcasite) were also present. Crystal groups of this wurtzite are unique in the world (Fig. 32). Among the minerals collected from the spoil-heaps are colourful varieties of quartz (including some superb amethysts; Fig. 34), and crystals of calcite. Beautiful, but rare, specimens of celestine, inesite, fluorite, and barite are also known from here (Fig. 33). In many instances, the minerals mentioned above separated out rhythmically, forming 'ribbons' in the veins in the type of ore texture known as cockade or ore. Fig. 32 WURTZITE (6 cm sp) Fig. 33 CELESTINE (1 cm xl) Gyöngyösoroszi Gyöngyösoroszi