Hydrothermal flake graphite mineralisation in Paleoproterozoic rocks of south-east Greenland
作者: Nanna Rosing-SchowLeon BagasJochen KolbTonči Balić-ŽunićChristoph KorteMarco L. Fiorentini
作者单位: 1Geological Survey of Denmark and Greenland
2University of Western Australia and ARC Centre of Excellence for Core to Crust Fluid Systems
3Chinese Academy of Geological Sciences
4Karlsruhe Institute of Technology
5University of Copenhagen
刊名: Mineralium Deposita, 2017, Vol.52 (5), pp.769-789
来源数据库: Springer Journal
DOI: 10.1007/s00126-016-0701-9
关键词: Hydrothermal graphiteFlake graphiteCarbon isotopesRaman spectroscopyGreenland
英文摘要: Flake graphite mineralisation is hosted in the Kuummiut Terrane of the Paleoproterozoic Nagssugtoqidian Orogen, south-east Greenland. Eclogite-facies peak-metamorphic assemblages record temperatures of 640–830 °C and pressures of 22–25 kbar, and are retrogressed in the high-pressure amphibolite-facies during ca. 1870–1820 Ma. Graphite occurs as lenses along cleavage planes in breccia and as garnet-quartz-graphite veins in various metamorphic host rocks in the Tasiilaq area at Auppaluttoq, Kangikajik, and Nuuk-Ilinnera. Graphite contents reach >30 vol% in 0.2–4 × 20 m wide semi-massive mineralisation (Auppaluttoq, Kangikajik). Supergene alteration formed 1- to 2-m-thick and up to a 2.5 × 2.5 km wide loose limonitic gravel containing graphite flakes in places. The flake size ranges from 1...
原始语种摘要: Flake graphite mineralisation is hosted in the Kuummiut Terrane of the Paleoproterozoic Nagssugtoqidian Orogen, south-east Greenland. Eclogite-facies peak-metamorphic assemblages record temperatures of 640–830 °C and pressures of 22–25 kbar, and are retrogressed in the high-pressure amphibolite-facies during ca. 1870–1820 Ma. Graphite occurs as lenses along cleavage planes in breccia and as garnet-quartz-graphite veins in various metamorphic host rocks in the Tasiilaq area at Auppaluttoq, Kangikajik, and Nuuk-Ilinnera. Graphite contents reach >30 vol% in 0.2–4 × 20 m wide semi-massive mineralisation (Auppaluttoq, Kangikajik). Supergene alteration formed 1- to 2-m-thick and up to a 2.5 × 2.5 km wide loose limonitic gravel containing graphite flakes in places. The flake size ranges from 1...
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
  • mineralisation 矿化作用
  • graphite 石墨
  • metamorphic 变质的
  • alteration 蚀变
  • grade 品位
  • terrane 地带
  • feldspar 长石
  • facies 
  • breccia 角砾岩
  • eclogite 榴辉岩