Carbonate-silicate melt immiscibility, REE mineralising fluids, and the evolution of the Lofdal Intrusive Suite, Namibia

详细信息    查看全文

• 关键词：Alkaline ; Carbonatite ; Fenitisation ; Liquid immiscibility ; Rare earth elements ; Silica-undersaturated
• 刊名：Lithos
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：268-271
• 期：Complete
• 页码：383-398
• 全文大小：3040 K
• 卷排序：268

文摘

Partial melting of mantle produced a phono-tephrite melt that evolved to phonolite and calcio-carbonatite. The calcio-carbonatite separated as an immiscible melt from the phono-tephrite or phonolite melt. The calcio-carbonatite is anomalously enriched in the HREE relative to other carbonatites. Carbonatite-derived carbo-hydrothermal fluids fenitised the adjacent rocks and were the source of the HREE mineralisation.