Magmatic structure and geochemistry of the Luanga Mafic-Ultramafic Complex: Further constraints for the PGE-mineralized magmatism in Carajás, Brazil

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• 作者：Eduardo Teixeira Mansur ^{etmansur@gmail.com} ; Cesar Fonseca Ferreira Filho ; ^{cesarf@unb.br}
• 关键词：Layered intrusion ; PGE ; Nickel-rich olivine ; Mafic&ndash ; ultramafic magmatism
• 刊名：Lithos
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：266-267
• 期：Complete
• 页码：28-43
• 全文大小：3379 K
• 卷排序：266

文摘

The Luanga Complex originated in an open-system magma chamber. Ni contents in olivine are anomalously high (up to 7500 ppm). High nickel contents in olivine occur in PGE enriched (Pt + Pd > 1 ppm) intervals. Upgrading of magmas through dissolution of previously formed Ni-rich sulfide melts PGE-fertile magmatism in Carajás