In most magmatic sulfide deposits, platinum-group elements (PGE) are found both within the structure of the base metal sulfides (BMS), pyrrhotite (Po), pentlandite (Pn), chalcopyrite (Ccp) and cubanite (Cbn) and as platinum-group minerals (PGM). Tellurium, As, Bi, Sb and Sn (TABS) are essential elements in many of these PGM. The potential role of TABS in collecting PGE, and thus forming a PGE deposit, has not been closely investigated. We have determined the concentrations of a full suite of chalcophile elements in Po, Pn, Ccp and Cbn using laser ablation-inductively coupled plasma mass spectrometry on samples from the Noril’sk-Talnakh Ni deposits. In these deposits, the Po-rich ore is thought to represent monosulfide solid solution (MSS) cumulate of the initial sulfide liquid, and the Ccp-rich ore a mixture of the fractionated sulfide liquid and intermediate solid solution (ISS). The BMS from the Po-rich ore contain lower concentrations of TABS, Pd, Pt and Au, and higher concentrations of Mo, Ru, Rh, Re, Os and Ir than BMS from the Ccp-rich ores. This observation is consistent with experimental results which show that TABS, Pd, Pt and Au are incompatible with MSS, whereas the other elements are compatible in MSS. Counter intuitively, in the Po-rich ore, the bulk of the Pd and TABS is hosted by BMS. This is because during crystallization, although only a small amount of the incompatible elements partitioned into the BMS, the fractionated liquid has migrated away; thus, the Po-rich ores represent MSS adcumulates. Therefore, as the Po-rich ores contain very little trapped liquid fraction, the BMS host the bulk of Pd and TABS. In contrast, in the Ccp-rich ore, the bulk of Au, Pd, Pt and TABS is present as PGM or electrum grains. This is because more trapped liquid is present, and as TABS Au, Pd and Pt are not compatible with ISS, they concentrated into the very last sulfide liquid, and crystallized as intergrowths of Pd-Pt-TABS PGM. The TABS then do not appear to collect Pd, Pt and Au but rather all elements are concentrated in the most fractionated sulfide liquid by crystal fractionation.

中文翻译：

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来自 Noril'sk-Talnakh 矿石的磁黄铁矿、黄铜矿、黄铜矿和立方铜矿中亲硫族元素和铂族元素的分布：对铂族矿物形成的影响

在大多数岩浆硫化物矿床中，铂族元素 (PGE) 既存在于贱金属硫化物 (BMS)、磁黄铁矿 (Po)、镍黄铁矿 (Pn)、黄铜矿 (Ccp) 和立方铜矿 (Cbn) 的结构中，也可作为铂-组矿物（PGM）。碲、砷、铋、锑和锡 (TABS) 是许多 PGM 中的基本元素。TABS 在收集 PGE 并因此形成 PGE 矿床方面的潜在作用尚未得到仔细研究。我们使用激光烧蚀-电感耦合等离子体质谱法对 Noril'sk-Talnakh Ni 矿床的样品测定了 Po、Pn、Ccp 和 Cbn 中全套亲硫元素的浓度。在这些矿床中，富含 Po 的矿石被认为代表了初始硫化物液体的单硫化物固溶体 (MSS) 累积，富含 Ccp 的矿石是分馏硫化物液体和中间固溶体 (ISS) 的混合物。与来自富 Ccp 矿石的 BMS 相比，来自富 Po 矿石的 BMS 含有较低浓度的 TABS、Pd、Pt 和 Au，以及较高浓度的 Mo、Ru、Rh、Re、Os 和 Ir。这一观察结果与实验结果一致，实验结果表明 TABS、Pd、Pt 和 Au 与 MSS 不相容，而其他元素与 MSS 相容。与直觉相反，在富 Po 矿石中，大部分 Pd 和 TABS 由 BMS 托管。这是因为在结晶过程中，虽然只有少量不相容元素分配到 BMS 中，但分馏的液体已经迁移走了；因此，富 Po 矿石代表 MSS 积累。因此，由于富 Po 矿石含有很少的截留液体部分，BMS 承载着大量的 Pd 和 TABS。相比之下，在富含 Ccp 的矿石中，大部分 Au、Pd、Pt 和 TABS 以 PGM 或金银颗粒的形式存在。这是因为存在更多的被困液体，并且由于 TABS Au、Pd 和 Pt 与 ISS 不相容，它们浓缩到最后的硫化物液体中，并结晶为 Pd-Pt-TABS PGM 的共生体。TABS 然后似乎没有收集 Pd、Pt 和 Au，而是所有元素都集中在通过晶体分馏最分馏的硫化物液体中。