Impact of historical gold mining activities on marine sediments in Wine Harbour, Nova Scotia, Canada
作者: Megan E LittleMichael B ParsonsBrent A LawTimothy G. MilliganJohn N Smith
作者单位: 1Natural Resources Canada, Geological Survey of Canada (Atlantic).
刊名: Atlantic Geology, 2015, Vol.51 (1), pp.344-363
来源数据库: Atlantic Geoscience Society
DOI: 10.4138/atlgeol.2015.016
原始语种摘要: Past investigations at historical gold (Au) districts in Nova Scotia, Canada have identified elevated concentrations of arsenic (As) and mercury (Hg) in nearby sediments and waters. These metal(loid)s are derived from erosion of mineralized bedrock, and the disposal of mine tailings into the environment during early operations. The Wine Harbour gold district is located along the eastern shore of Nova Scotia, and produced 1329 kg of Au from 75 581 tonnes of crushed rock from 1862 to 1939.The gold occurs in arsenopyrite-bearing quartz-carbonate veins and was extracted using stamp milling and Hg amalgamation. Historical maps document tailings deposits near former stamp mill sites; however, the extent to which these mine wastes influence environmental quality in the adjacent marine...
全文获取路径: 大西洋地球科学学会  (合作)

  • concentrations 浓聚物
  • tailings 尾渣
  • Canada 加拿大
  • historical 历史的
  • operation 运算
  • marine 海洋的
  • metal 金属
  • mining 矿业
  • vertical 垂线
  • environmental 环境的