Genesis of low sulfidation type epithermal ore indications at Aranyosbérc (Mátrakeresztes), Mátra Mts., North Hungary
Indications are situated at the western border of the low sulfidation type western Mátra ore field, representing a characteristic part of the polymetallic-epithermal zone of the Inner Carpathian Volcanic Belt. The host rock shows intense silicification and K-metasomatic alteration. The poor, origina...
Elmentve itt :
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| Dokumentumtípus: | Cikk |
| Megjelent: |
Szegedi Egyetem Ásványtani, Geokémiai és Kőzettani Tanszéke
Szeged
2000
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| Sorozat: | Acta mineralogica-petrographica
41 |
| Kulcsszavak: | Kőzettan, Ásványtan, Földtan |
| Tárgyszavak: | |
| Online Access: | http://acta.bibl.u-szeged.hu/24891 |
| Tartalmi kivonat: | Indications are situated at the western border of the low sulfidation type western Mátra ore field, representing a characteristic part of the polymetallic-epithermal zone of the Inner Carpathian Volcanic Belt. The host rock shows intense silicification and K-metasomatic alteration. The poor, original sulfide mineralization (marcasite and arsenic pyrite) is accompanied by silicification, in form of stockworks and little veins with banded structure. Later these minerals were transformed into goethite and jarosite (gossan formation), indicating the high potassium content (13% K2O) of the host rock. In the area there is an As-Sb-(Hg-Ba) anomaly (8500ppm As, lOOOppm Sb) belonging to the secondary minerals. The mineralization proceeded at 190-200°C. Two types of fluids could be distinguished of different salinity and composition (vein-forming and "apophysis" stage). The dilution of solutions by meteoric water was characteristic. Consequently, the upper region of the vein system of a low sulfidation type mineralization can be identified, which is located in shallower depth than the vein system of the western Mátra mineralization. |
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| Terjedelem/Fizikai jellemzők: | 63-77 |
| ISSN: | 0365-8066 |