Mineralogical and Geochemical Study of the Ni-Cu-Co-Au-Ag-PGE Sulfides of the Discovery Zone, Nickel Mountain Gabbro Complex, British Columbia

镍山辉长岩杂岩中的E&L矿床是不列颠哥伦比亚省已知的第二大岩浆镍铜硫化物矿化带，也是在Eskay裂谷中发现的第一个矿床。拟议的研究将检查异常高品位的块状硫化物Ni-Cu-PGE矿化带，主要由E&L侵入体附近的变质沉积岩所容纳。被称为发现区的矿化是由Garibaldi资源公司（GRC）于2016年发现的，但矿化的起源仍然知之甚少。块状硫化物片从底部到顶部呈现出Ni、Cu、Co和贵金属浓度的系统变化。这为了解硫化物熔体分化的机制提供了一个独特的新机会。该项目的目标是确定发现区内矿化的地质控制因素，了解片内成分多样性的起源，以及这种矿化与E&L侵入体中可变结构橄榄辉长岩所含的浸染状块状硫化物之间的关系。该研究将利用原始野外和钻孔岩心观测、全岩硫化物地球化学以及矿物结构和成分数据来评估原始岩浆与晚期岩浆和后岩浆对成矿成分的相对控制作用。这些数据将用于建立发现带矿化的成因模型，该模型将用于评估和改进GRC在镍山辉长岩杂岩中寻找额外硫化物矿化的勘探策略。

The E&L deposit in the Nickel Mountain Gabbro Complex is the second largest known zone of magmatic nickel-copper sulfide mineralization in British Columbia and the first to be discovered within the Eskay Rift. The proposed research will examine a zone of unusually high-grade massive sulfide Ni-Cu-PGE mineralization, largely hosted by metasedimentary rocks adjacent to the E&L Intrusion. The mineralization, known as the Discovery Zone, was discovered in 2016 by Garibaldi Resources Corp. (GRC), but the origin of the mineralization remains poorly understood. The massive sulfide sheet shows systematic changes in the concentrations of Ni, Cu, Co, and precious metals from base to top. This offers a unique and new opportunity to understand the mechanisms responsible for the differentiation of sulfide melts. The objectives of this project are to identify the geological controls of the mineralization within the Discovery Zone and to understand how the compositional diversity within the sheet originated, and how this mineralization relates to the disseminated and massive sulfides hosted by the variable-textured olivine gabbro of the E&L Intrusion. The study will utilize primary field and drill core observations, whole-rock sulfide geochemistry, and mineral textural and compositional data to evaluate the relative roles of primary magmatic versus late magmatic and post-magmatic controls on the composition of the mineralization. These data will be used to produce a genetic model for the Discover Zone mineralization, which will be used to assess and improve GRC's exploration strategy in the search for additional sulfide mineralization within the Nickel Mountain Gabbro Complex.