Massive Sulfides from the Lac-des-Iles Palladium Ore Deposits,Ontario,Canada

摘要：

　　We have studied newly discovered massive sulfides from the Lac-des-Iles Pd ore deposits (i.e.Roby and Offset zones).Petrographical investigations show that four distinct assemblages can be identified based on the degree of alteration.Massive pods and lenses of sulfides evolve from magmatic to very altered.The magmatic ones mainly consist of pyrrhotite and pentlandite (Pn) where Pn displays typical igneous morphological features.The amount of pyrite (Py) and chalcopyrite are minor.The very altered ones consist of Py and/or magnetite widely replacing the primary assemblages.Whole rock geochemical analyses from massive sulfides compared to disseminated show that Ni,Se and Ir are well correlated with S,whereas values of Pd for massive sulfides fall below the trend line extrapolated from the disseminated sulfides.We found that there was no evidence between the petrographical features and the whole rock geochemical analyses.Thus we suggest that massive sulfides formed by mss accumulation.

作者: C.Duran S.-J.Barnes J.T.Corkery

作者单位: Sciences de la Terre,Université du Québec à Chicoutimi,555 Boulevard de lUniversité,Chicoutimi,Québ North American Palladium,556 Tenth Avenue,Thunder Bay,Ontario,Canada P7B 2R2

会议类型: 国际会议

会议名称: 第十二届镍矿床国际会议

会议地点: 贵阳

会议语种:英文

页码: 124-127

在线出版日期: 2012-06-16（万方平台首次上网日期，不代表论文的发表时间）