A debreceni Déri Múzeum állandó természettudományi kiállításai. Ásványok világa. Tájunk madarai (Debrecen, 1999)

Slovakia, Bulgaria, Poland and Madagascar in his collection. You can admire exceptionally beautiful minerals and mineral-groups of antimonite, galenite, quartz, calcite, barite, manganocalcite, opal. In the Show-case No. 4. there are minerals coming from mines of Recsk, Mátraszentimre and Gyöngyösoroszi. These mines are worked out or the mining became uneconomic thus these minerals are museum pieces. There are lots of calcites, spars, calcite-piritecalcopirites, jasper-opals here. In the Show-case No. 5 are the minerals of the TransDanubia form the quarries of Dorog, Tatabánya, Úrkút, Dunabogdány and Pécs. The mellit is an international curiosity which is an intermediate between inorganic and organic minerals. Its crystals are exceptionally big here. Its accompanying mine-rals are the gyps and the aluminite. The manganese of Úrkút or psilomelane has industrial importance. Mineralogical curiosity is the chabazite of Dunabogdány. The antracité has ebony glimmers. In the Show-case No. 6 we placed minerals, which were rediscovered as remaining parts of the founder's collections (Arthur Löfkovics, Frigyes Déri), such as the serpentine, the diallague, natrolite, a big piece of silicified trunk and a wonderful ametistified quartz cristalgroup from Selmecbánya. One of our most beautiful cristal-group is the rose-spar-quartz-kapnicite group, in which the white mineral is the kapnicite named after the town Kapnikbánya in Transylvania. From the same place we have a spectacular piritecalcopirite-quartz-doloimte cristalgroup. You can see here granet, a gem which was popular at the beginning of the century, but there are brimstones and halite too. Our exhibition wants to show hidden beauties of nature, which are difficult to get to know not only in Debrecen, but in the mountains too.