Informace o publikaci
Three columbite-group minerals from Ratnapura, Sri Lanka
| Autoři | |
|---|---|
| Rok publikování | 2025 |
| Druh | Článek v odborném periodiku |
| Časopis / Zdroj | Mineralogy and Petrology |
| Fakulta / Pracoviště MU | |
| Citace | |
| www | https://link.springer.com/article/10.1007/s00710-025-00936-y |
| Doi | https://doi.org/10.1007/s00710-025-00936-y |
| Klíčová slova | Columbite-(Mn); Columbite-(Fe); Fersmite; EPMA chemical analysis; Single-crystal X-ray diffraction; Raman spectroscopy |
| Přiložené soubory | |
| Popis | Three oxide minerals belonging to the columbite group, including columbite–(Mn) (MnNb2O6), columbite–(Fe) (FeNb2O6), and fersmite (CaNb2O6), were found in specimens from gem placers in Ratnapura district, Sri Lanka. We present results of chemical, structural and spectroscopic analyses, including the first Raman spectrum for natural fersmite. For columbite–(Mn) and columbite–(Fe), analytical results obtained before and after dry annealing in air indicate low degrees of accumulated self-irradiation damage, which corresponds well with low actinide concentrations. |