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

THE AGGTELEK-RUDABÁNYA AND SZENDRŐ MOUNTAINS The Szendrő mountains are composed largely of Paleozoic rocks. The crystalline limestone, consisting mainly of calcite, includes a little marcasite and its decomposition product goethite. There are probably of hydrothermal origin some interesting traces of copper, lead and zinc in an arsenopyrite - pyrrhotite bearing mineral association which was found during a drilling program in argillaceous slates. In quartz veins in phyllite, near Rakacaszend, a rather restricted Alpine type assemblage was found. Fig. 24 PYRITE (0.4-1.5 cm xl) Perkupa Permian evaporite deposits in the area of the AggtelekRudabánya mountains were prospected with a number of boreholes before a deep-mine for gypsum and anhydrite was sunk and before the present-day opencast working for gypsum was developed at Alsótelekes. In the abandoned mine at Perkupa, small-grained or sparlike anhydrite was strip-mined on a large scale. Here, gypsum was generally found in fibrous veins, formed mainly from anhydrite; halite