In situ LA–ICP-MS and EPMA trace element characterization of Fe–Ti oxides from the phoscorite–carbonatite association at Phalaborwa, South Africa
作者: Lorenzo MilaniRobert BolharR. Grant CawthornDirk Frei
作者单位: 1University of the Witwatersrand
2Stellenbosch University
3University of the Western Cape
刊名: Mineralium Deposita, 2017, Vol.52 (5), pp.747-768
来源数据库: Springer Journal
DOI: 10.1007/s00126-016-0696-2
关键词: CarbonatiteLA–ICP-MSEPMAGeothermobarometryMagnetiteSulfides
英文摘要: In situ laser ablation inductively coupled plasma mass spectrometry (LA–ICP-MS) and electron probe microanalysis (EPMA) are used to characterize magnetite and ilmenite of the phoscorite–carbonatite association at Phalaborwa. We trace the behavior of the compatible elements for two different generations of magnetite related to (1) a magmatic stage, with variable Ti–V content, which pre-dates the copper mineralization, and (2) a late hydrothermal, low-Ti, low-temperature event, mostly post-dating sulfide formation. Magnetite is shown to be a robust petrogenetic indicator; no influence on its chemical composition is detected from the intergrowth with the accompanying phases, including the interaction with coexisting sulfides. High spatial resolution EPMA characterize the tiny late-stage...
原始语种摘要: In situ laser ablation inductively coupled plasma mass spectrometry (LA–ICP-MS) and electron probe microanalysis (EPMA) are used to characterize magnetite and ilmenite of the phoscorite–carbonatite association at Phalaborwa. We trace the behavior of the compatible elements for two different generations of magnetite related to (1) a magmatic stage, with variable Ti–V content, which pre-dates the copper mineralization, and (2) a late hydrothermal, low-Ti, low-temperature event, mostly post-dating sulfide formation. Magnetite is shown to be a robust petrogenetic indicator; no influence on its chemical composition is detected from the intergrowth with the accompanying phases, including the interaction with coexisting sulfides. High spatial resolution EPMA characterize the tiny late-stage...
全文获取路径: Springer  (合作)
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来源刊物:
影响因子:2.147 (2012)

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关键词翻译
关键词翻译
  • phoscorite 磷磁橄榄岩
  • South Africa 南非南非
  • carbonatite 碳酸盐岩
  • magnetite 磁铁矿
  • geochemical 地球化学的
  • intergrowth 交生
  • hydrothermal 热液的
  • ilmenite 钛铁矿
  • fugacity 逸散能
  • microanalysis 微量分析