Bajnóczi Bernadett and Seresné Hartai Éva and Nagy Géza: Phosphate-bearing minerals in the advanced argillic alteration zones of high-sulphidation type ore deposits in the Carpatho-Pannonian region. In: Acta mineralogica-petrographica : abstract series, (45) 1. pp. 81-92. (2004)
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Abstract
Ca-dominant, Al-phosphate-sulphate (APS) minerals with minor Ba. Sr, K, Na and REE contents were found in hydrothermal alunite or separately in advanced argillic alteration zones associated with high-sulphidation type epithermal systems in Hungary (Velence Mountains) and Slovakia (Podpolom deposit, KlokoC). Electron microprobe analyses show that these APS minerals are woodhouseite with S04 2 " and P04 3 " molar ratio varying between 1:3 and 2:1. The occurrence of APS minerals in close association with alunite and other hydrothermal minerals indicates a hypogene origin for these phases. Extensive leaching of magmatic minerals (apatite, feldspar) in the host rock by strongly acidic magmatic-hydrothermal fluids induced the formation of phosphate-bearing minerals. Changing physico-chemical characteristics of the hydrothermal fluids with time resulted in zoning and multiphase formation of these alunite-type minerals, with a common late phase dominated by pure sulphate (alunite). This is the first detailed documentation of hydrothermal APS minerals in alteration systems of the Carpatho-Pannonian region.
| Item Type: | Article |
|---|---|
| Journal or Publication Title: | Acta mineralogica-petrographica : abstract series |
| Date: | 2004 |
| Volume: | 45 |
| Number: | 1 |
| ISSN: | 0324-6523, 1589-4835 |
| Page Range: | pp. 81-92 |
| Series Name: | Acta mineralogica-petrographica |
| Language: | English |
| Publisher: | Department of Mineralogy, Geochemistry and Petrology, University of Szeged |
| Place of Publication: | Szeged |
| Related URLs: | http://acta.bibl.u-szeged.hu/39426/ |
| Uncontrolled Keywords: | Földtan, Kőzettan, Ásványtan |
| Additional Information: | Bibliogr.: p. 91-92. ; ill. ; összefoglalás angol nyelven |
| Subjects: | 01. Natural sciences 01. Natural sciences > 01.05. Earth and related environmental sciences |
| Date Deposited: | 2016. Oct. 17. 09:24 |
| Last Modified: | 2026. Feb. 12. 14:41 |
| URI: | http://acta.bibl.u-szeged.hu/id/eprint/25118 |
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