| Autor: |
Hesse, K.-F., Liebau, F., Eulert, H.-H. |
| Zdroj: |
Zeitschrift Für Kristallographie; August 2003, Vol. 218 Issue: 8 p542-552, 11p |
| Abstrakt: |
To clarify discrepancies in the literature with regard to the water content and crystal structure of wickenburgite, chemical and thermal analyses and IR spectroscopic measurements were made and the structure was redetermined with single-crystal X-ray diffraction data. It was found that the idealised composition of the mineral is Pb3Al2CaSi10O27·4 H2O rather than Pb3Al2CaSi10O27·3 H2O as reported by Lam et al. in 1994. Based on chemical analysis and crystal structure determination, there is considerable isomorphous replacement on the cation positions, leading to the crystal-chemical formula |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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