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GAO Jian-hua, FAN Wen-yu, WU Zhen-bo, WANG Hong. Geochemistry and mineralization of the monzonite granite-porphyry from the PhuPhaLek iron deposit, Laos[J]. Sedimentary Geology and Tethyan Geology, 2015, 35(3): 102-108.
Citation: GAO Jian-hua, FAN Wen-yu, WU Zhen-bo, WANG Hong. Geochemistry and mineralization of the monzonite granite-porphyry from the PhuPhaLek iron deposit, Laos[J]. Sedimentary Geology and Tethyan Geology, 2015, 35(3): 102-108.

Geochemistry and mineralization of the monzonite granite-porphyry from the PhuPhaLek iron deposit, Laos

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  • Received Date: April 21, 2015
  • Revised Date: June 28, 2015
  • Published Date: September 29, 2015
  • The PhuPhaLek iron deposit, Laos in the northwestern part of the Truongson fold belt occurs as a large-sized skarn-type iron deposit. The mineralization occurs within the inner-outer contact zone of monzonite granite porphyries. The monzonite granite porphyries have enriched alkali and oversaturated Si and Al, and are assigned to the calc-alkaline rocks. The trace element distribution patterns are similar to those of the normal continental arc granites. The rare earth element distribution patterns display right-leaning LREE-enriched patterns with positive Eu anomaly and marked fractionation of LREE and HREE, suggesting the "S"-type granites created by the remelting and intrusion of the lower crust melts. The SHRIMP U-Pb age of 283±2.9 Ma indicates that the emplacement took place during the Early Permian.
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