Synchrotron XFM data for Le_Vaillant_10023 (Oct 2015)

Norilsk, the world largest Ni-Cu-PGE deposit, is unique among ultramafic-mafic associated igneous deposits, combining PGE and PGE-Cu-Ni sulphide deposits within a single intrusive body. The genesis of Norilsk is synchronous with the greatest mass extinction event in Earth history. It is also unique in having formed from magmas that were
apparently de-gassing while the ore magmas were crystallising. We aim to build on results from a previous experiment to track the behaviour of precious metals and gold in relation to complex patterns of trace element zoning in silicate minerals growing inside gas bubbles.

诺里尔斯克（Norilsk）是全球规模最大的镍-铜-铂族金属（PGE）矿床，在与超镁铁质-镁铁质岩体伴生的火成矿床中独具特色，可在单个侵入体中同时产出铂族金属矿床与铂族金属-铜-镍硫化物矿床。诺里尔斯克矿床的形成时代与地球历史上规模最大的生物集群灭绝事件完全同步。该矿床的另一独特之处在于，其成矿岩浆在结晶过程中伴随显著的脱气作用。本研究旨在基于前期实验成果，追踪气相气泡内生长的硅酸盐矿物中微量元素分带的复杂模式与贵金属及金的行为关联。