Identifying controls on the thickness and geometallurgy of the Flatreef PGE deposit, Turfspruit farm, Northern Limb of the Bushveld Complex....

确定南非布什维尔德杂岩北缘Turfspruit农场Flatreef铂族元素存款厚度和几何学的控制因素南非布什维尔德杂岩北部拥有世界上最大的铂族元素（PGE）存款Platreef。近年来，鉴于其在绿色能源生产中的作用，PGE已成为向净零过渡的关键。最近发现的Platreef的下倾延伸，即Flatreef PGE-Ni-Cu存款，已知具有高品位矿化和约10年全球铂供应的资源潜力。在地层学上，Flatreef具有非常不均匀的厚度，其Ni、Cu和PGEs品位之间的关系尚不清楚。正岩浆成矿作用不能完全解释矿化的分布及其与厚度的关系。在成矿过程中，碳酸盐岩和页岩的同化作用可能使矿化作用重新活动，然而，这些影响尚未完全了解。该项目将通过沿着走向和不同国家岩石同化带记录岩芯，调查Flatreef矿化的潜在控制因素。TIMA自动矿物学制图将用于调查这些不同区域的几何学。硅酸盐微量元素地球化学的TOF LA-ICP-MS分析以及硅酸盐和碳酸盐相的稳定同位素（18 O和13 C）分析将评估同化的程度，从而跟踪同化对系统的影响，并了解每个下盘岩性的神秘同化。

Identifying controls on the thickness and geometallurgy of the Flatreef PGE deposit, Turfspruit farm, Northern Limb of the Bushveld Complex, South Africa.The Northern Bushveld Complex, South Africa, hosts the world's largest deposit of platinumgroup elements (PGEs), the Platreef. In recent years, given their role in green energy production, PGEs have become essential for the transition to net-zero. The recently discovered down-dip extension of the Platreef, the Flatreef PGE-Ni-Cu deposit, has known to have highgrade mineralisation and a resource potential of ~10 years of global supply of Pt. Stratigraphically, the Flatreef has a very heterogenous thickness, and its relationship between Ni, Cu, and PGEs grades is unclear. Orthomagmatic ore-forming processes cannot fully explain the distribution of the mineralisation, nor its relationship to the thickness. Assimilation of dolomites and shales during ore formation may have remobilised mineralisation, however, these effects are not fully understood. This project will investigate potential controls on mineralisation in the Flatreef by logging drill core along strike and in different country-rock assimilation zones. TIMA automated mineralogical mapping will be used to investigate the geometallurgy in these different zones. TOF LA-ICP-MS analyses of silicate trace element geochemistry, and stable isotope ( 18O and 13C) analyses of silicate and carbonate phases will assess the extent of assimilation, allowing to track the effect of the assimilation on the system, and understand the cryptic assimilation of each footwall lithology.