Stable Isotopic Studies of the Voisey's Bay Copper-Nickel-Cobalt Deposit, Labrador, Canada: The Role of Externally-Derived Sulfur in Ore Genesis

加拿大拉布拉多沃伊西湾铜镍钴矿床的稳定同位素研究：外源硫在矿石成因中的作用

• 批准号: 0086538
• 负责人: Edward Ripley
• 金额: $ 11.99万
• 依托单位: Indiana University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-01-15 至 2004-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0086538&HistoricalAwards=false
• 关键词: Stable; Isotopic; Studies; Voisey; Bay

0086538RipleyThis grant provides support to Ed Ripley and a graduate student at the University of Indiana to conduct stable isotopic, trace elemental and compositional analysis of rocks associated with the Voisey's Bay massive sulfide deposit in Labrador, Canada. The Voisey's Bay deposit is one of the largest economically viable nickel deposits in the world today. Previous preliminary studies by the PI in collaboration with Tony Naldrett (Univ. Toronto) have indicated that mineralization of this deposit, though sulfide saturation, appears to have been caused by contamination of the magmatic intrusion by country rocks. Nonetheless, a smoking gun has not yet been found. This study would expand on previous research by adding high resolution stable isotopic analyses of sulfur, oxygen and carbon from multiple whole rock and mineral separate samples taken from the low-sulfur county rock and unmineralized and mineralized portions of the deposit to elucidate the source of sulfur responsible for sulfide saturation within the deposit.

0086538Ripley这项资助资助了Ed Ripley和印第安纳大学的一名研究生对与加拿大拉布拉多Voisey's Bay块状硫化物矿床相关的岩石进行稳定同位素、微量元素和成分分析。Voisey's Bay矿床是当今世界上经济上可行的最大镍矿床之一。PI先前与多伦多大学的Tony Naldrett合作进行的初步研究表明，尽管硫化物饱和，但该矿床的矿化似乎是由乡村岩石侵入的岩浆污染造成的。尽管如此，还没有找到确凿的证据。本研究将在先前研究的基础上，增加对硫、氧和碳的高分辨率稳定同位素分析，这些硫、氧和碳来自多个整体岩石和从低硫县岩石、矿床未矿化和矿化部分提取的矿物分离样本，以阐明导致矿床内硫化物饱和的硫的来源。