Boros István (szerk.): A Magyar Természettudományi Múzeum évkönyve 51. (Budapest 1959)

Kaszanitzky, F.: Genetic relation of ore occurrence in the Western Mátra Mountains, North Eastern Hungary

Explication of the Plates Plate I. 1. Chalcopyrite II and pyrite II. The shapeless ore of coarse surface seen in the gangue is marcasite. 56 X

. Arany Péter vein. 2. Automorphous marcasite crystals (bright) in youngest pyrite. Part of pyrite exhibits a gel structure. 80 X

. Szákacsurgó vein. 3. The black field is gangue (cryptocrystalline quartz). The centra] part of the peninsulashaped field is marcasite surrounded by a rhytmic alteration of melnikovite and marcasite 80 X

. Szákacsurgó vein. 4. Oriented grains of tetrahedrite in galena (bright). The dark grey ore is sphalerite. 128 X

. Arany Péter vein. 5. Old galena replaced by chalcopyrite (center). The interstices of the ore minerals are secondarily filled by phenocrysts of quartz. Old pyrite is likewise surrounded by quartz. 23 X

. Károly vein. 6. Aggregates of bournonite in young galena. 128 X. Niçois placed diagonally. Aranybányabérc vein. Plate H. 1. Pyrite I

—II and chalcopyrite (bright). Chalcopyrite surrounds pyrite I. Pyrite II is seen to be younger than chalcopyrite. 23 X

. Bányabérc vein. 2. Pyrite (dark grey) replacing galena and sphalerite. 23 X

. Bányabérc vein. 3. Sequence of formation : galena I with cleavage lines, sphalerite I (grey), chalcopyrite II (bright), pyrite II (dark grey). The black field is gangue. 56 X

. Bányabérc vein. 4. Radial aggregate of arsenopyrite crystals among sphalerite grains (bright). Arsenopyrite is partly altered. 80 X

. Arany Péter vein.