Dynamic remelting and zone refining of Ni-Cu-PGE mineralization in the Sudbury igneous complez, Ontario, Canada

摘要：

Ni-Cu-(PGE) ores in the Sudbury Structure occur in two fundamentally different environments: Ⅰ) in contact ± footwall systems near the base of the Sudbury Igneous Complex and Ⅱ) in radial and concentric quartz diorite dikes that extend further into the footwall rocks.Type la ore systems occur in footwall embayments and are hosted by Sublayer and footwall breccias. Ores are typically less fractionated over mafic lithologies and more fractionated (from Cu-PPGE-poor to Cu-PPGE-rich) over felsic lithologies. Systematic variations in fragment compositions, orientations, and textures, mineralogy, and geochemistry from Sublayer-hosted mineralization and inclusion-bearing massive mineralization through granite breccia-hosted mineralization to footwall vein mineralization (see Table 1) suggest that sulfide melts infiltrated and mechanically-eroded footwall rocks (see Fig. 1).

作者: C.M.Lesher J.P.Golightly S.K.Gregory A.E.Stout

作者单位: Mineral Exploration Research Centre, Department of Earth Sciences, Laurentian University,Sudbury, On Mineral Exploration Research Centre, Department of Earth Sciences, Laurentian University,Sudbury, On Mineral Exploration Research Centre, Department of Earth Sciences, Laurentian University,Sudbury, On Mineral Exploration Research Centre, Department of Earth Sciences, Laurentian University,Sudbury, On

会议类型: 国际会议

会议名称: Xian International Ni-Cu(Pt) Deposit Symposium 2009(2009 西安·Ni-Cu(Pt)岩浆矿床国际学术研讨会)

会议地点: 西安

会议语种:英文

页码: 157-160

在线出版日期: 2009-09-01（万方平台首次上网日期，不代表论文的发表时间）