A Palaeoproterozoic multi-stage hydrothermal alteration system at Nalunaq gold deposit, South Greenland
作者: Robin-Marie BellJochen KolbTod Earle WaightLeon BagasTonny B. Thomsen
作者单位: 1Department of Petrology and Economic Geology, Geological Survey of Denmark and Greenland (GEUS)
2Department of Geosciences and Natural Resource Management (Geology Section), University of Copenhagen
3Centre for Exploration Targeting, The University of Western Australia
刊名: Mineralium Deposita, 2017, Vol.52 (3), pp.383-404
来源数据库: Springer Journal
DOI: 10.1007/s00126-016-0667-7
关键词: Gold mineralisationOrogenic goldMulti-stage hydrothermal alterationKetilidian OrogenSouth Greenland
英文摘要: Abstract(#br)Nalunaq is an orogenic, high gold grade deposit situated on the Nanortalik Peninsula, South Greenland. Mineralisation is hosted in shear zone-controlled quartz veins, located in fine- and medium-grained amphibolite. The deposit was the site of Greenland’s only operating metalliferous mine until its closure in 2014, having produced 10.67 t of gold. This study uses a combination of field investigation, petrography and U/Pb zircon and titanite geochronology to define a multi-stage hydrothermal alteration system at Nalunaq. A clinopyroxene-plagioclase-garnet(-sulphide) alteration zone (CPGZ) developed in the Nanortalik Peninsula, close to regional peak metamorphism and prior to gold-quartz vein formation. The ca. 1783–1762-Ma gold-quartz veins are hosted in reactivated shear...
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影响因子:2.147 (2012)

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关键词翻译
关键词翻译
  • hydrothermal 热液的
  • deposit 沉积
  • alteration 蚀变
  • multi 多种
  • system 
  • stage