Nordstrandite - a new occurrence from Hungary
A new occurrence of nordstrandite was described from NE Hungary (Aggtelek-Rudabdnya Mts). This mineral appeared in red clayed matrix of conglomerates accumulated in dolines from Triassic platform limestone. It was investigated by X-ray diffractometry, thermal analyses, SEM-EDS. By X-ray analyses it...
Elmentve itt :
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| Dokumentumtípus: | Cikk |
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Department of Mineralogy, Geochemistry and Petrology, University of Szeged
Szeged
2008
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| Sorozat: | Acta mineralogica-petrographica
48 |
| Kulcsszavak: | Földtan, Ásványtan, Kőzettan |
| Tárgyszavak: | |
| Online Access: | http://acta.bibl.u-szeged.hu/25151 |
| Tartalmi kivonat: | A new occurrence of nordstrandite was described from NE Hungary (Aggtelek-Rudabdnya Mts). This mineral appeared in red clayed matrix of conglomerates accumulated in dolines from Triassic platform limestone. It was investigated by X-ray diffractometry, thermal analyses, SEM-EDS. By X-ray analyses it was possible to separate the nordstrandite from other crystalline modifications of Al(OH)3. Nordstrandite appears as individual or radial crystal aggregates in voids (fissures or cavities). In our case the nordstrandite precipitated from amorphous Al(OH)3 gels, from the alkaline phreatic solutions, infiltrating along the fissures of the clayed matrix of conglomerates. Nordstrandite was most probably formed during Late Miocene-Pleistocene. |
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| Terjedelem/Fizikai jellemzők: | 43-48 |
| ISSN: | 0365-8066 |