1. Mobility of lanthanides accompanying the formation of alunite group minerals.
- Author
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Kikawada, Y., Uruga, M., Oi, T., and Honda, T.
- Subjects
- *
ALUNITE , *SULFATE minerals , *VOLCANOES , *SILICATE minerals , *MINERALS , *SILICATES - Abstract
Concentration of lanthanides (Lns) in alunite group mineral samples from the Kusatsu-Shirane volcano area, Gunma, Japan, were determined by neutron activation analysis. Their Ln abundance patterns showed enrichment of light Lns relative to their original rocks and GSJ geochemical reference samples of feldspars. It was found that the concentration of light Lns increased with increasing concentration of K and P. The positive correlation between the light Lns and P concentration suggested the formation of florencite, whereas the positive correlation between the concentration of light Lns and K may reflect the difference between the solubility of double salts of K and Ln sulfates of light Lns and heavy Lns, respectively. [ABSTRACT FROM AUTHOR]
- Published
- 2004
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