New U-Pb age constraints for the timing of gold mineralization at the Pampalo gold deposit, Archaean Hattu schist belt, eastern Finland, obtained from hydrothermally altered and recrystallised zircon
作者: A. KäpyahoF. MolnárP. Sorjonen-WardI. MänttäriG. SakellarisM.J. Whitehouse
作者单位: 1Geological Survey of Finland, P.O. Box 96, FI-02151 Espoo, Finland
2Geological Survey of Finland, P.O. Box 1237, FI-70211 Kuopio, Finland
3Pampalo Mine, Pampalontie 11, FI-82967 Hattu, Finland
4Department of Geosciences, Swedish Museum of Natural History, Box 50 007, SE-104 05 Stockholm, Sweden
刊名: Precambrian Research, 2017, Vol.289 , pp.48-61
来源数据库: Elsevier Journal
DOI: 10.1016/j.precamres.2016.11.004
关键词: GoldArchaeanZirconMobilityAlterationMineralizationHydrothermal
英文摘要: Abstract(#br)In this paper we present new U-Pb data on zircon and titanite from the host rocks of the Pampalo gold deposit located within the Neoarchaean Hattu schist belt in eastern Finland. We also present new U-Pb data on nearby plutonic rocks. Plagioclase porphyries at the mine site demonstrate inheritance from 2.82–2.83Ga sources while a suggestive intrusive age is at c. 2.76Ga. Zircon grains extracted from the altered felsic units hosting the gold ore show complex alteration and recrystallisation textures and demonstrate Zr mobility. This mobility is most probably related to the alteration event although direct link to gold mineralization remains to be shown. The preserved or recrystallized parts of the altered zircon grains, texturally...
全文获取路径: Elsevier  (合作)
影响因子:4.441 (2012)

  • zircon 锆石
  • schist 片岩
  • constraints 系统规定参数
  • deposit 沉积
  • mineralization 成矿酌
  • timing 计时
  • eastern 东方的
  • Finland 芬兰
  • altered 改变的