Mineralogical and microstructural features of chalcedony from Mátra Mts, Northern Hungary - a tem study
The association and structural relationships of moganite, a recently described silica polymorph, and microcrystalline silica were studied using petrographic microscopy. X-ray powder diffraction, and scanning and transmission electron microscopy. We studied a chalcedony sample, a common fibrous micro...
Elmentve itt :
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| Dokumentumtípus: | Cikk |
| Megjelent: |
Department of Mineralogy, Geochemistry and Petrology, University of Szeged
Szeged
2004
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| Sorozat: | Acta mineralogica-petrographica
45 No. 1 |
| Kulcsszavak: | Földtan, Ásványtan, Kőzettan |
| Tárgyszavak: | |
| Online Access: | http://acta.bibl.u-szeged.hu/25120 |
| Tartalmi kivonat: | The association and structural relationships of moganite, a recently described silica polymorph, and microcrystalline silica were studied using petrographic microscopy. X-ray powder diffraction, and scanning and transmission electron microscopy. We studied a chalcedony sample, a common fibrous microcrystalline silica variety from Gyongyossolymos, northern Hungary. Morphological and optical characteristics such as fiber striations and wrinkle banding and the association of mineral phases (quartz, moganite and cristobalite) are reported. Selected-area electron diffraction patterns of twinned domains with periodic and non-periodic twin planes are discussed in relation to moganite and quartz structures. |
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| Terjedelem/Fizikai jellemzők: | 101-106 |
| ISSN: | 0365-8066 |