Abstract A mineralogical–geochemical study of Late Pleistocene bottom sediments of the LV 77-10 core collected in the central part of Long Strait was carried out. Two horizons of sediments enriched in Au, Pd, and Ag, varying in the chemical composition have been established. Using scanning electron microscopy and X-ray microanalysis, a wide spectrum of ore minerals was found, including the most common pyrite–marcasite, as well as arsenopyrite, chalcopyrite, chalcocite, native Au, Ag, and Pb, acanthite, and complex phases of Fe–Ni–Cr and Ag–Cu–Pb–Zn. It is concluded that ore particles were transported together with wood fragments and some of them were formed as a result of chemical reactions in delta facies deposits in coastal marine environments.

中文翻译：

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长海峡（东西伯利亚海）更新世沉积物中的矿石成矿

摘要 对长海峡中部采集的LV 77-10岩心晚更新世底部沉积物进行了矿物地球化学研究。已经建立了两个富含金、钯和银的沉积物层，化学成分不同。使用扫描电子显微镜和 X 射线微量分析，发现了广泛的矿石矿物，包括最常见的黄铁矿-白铁矿，以及毒砂、黄铜矿、辉铜矿、天然金、银和铅、棘长石和复合相Fe-Ni-Cr 和 Ag-Cu-Pb-Zn。结论是矿石颗粒与木材碎片一起运输，其中一些是由于沿海海洋环境中三角洲相沉积物中的化学反应而形成的。