Abstract

Mineralogical and U–Pb (ID-TIMS) geochronological studies of garnets from three types of scarn associations of the Khovu-Aksy Ag–Bi–Cu–Ni–Co deposit (Republic of Tuva) are carried out. The U–Pb garnet age estimate (404 ± 2 Ma) is close to the Early Devonian stage of basite and alkaline-basite magmatism identified within the Tuva trough of the Altai-Sayan folded area. The age of the scarn formation and the associated early stage of mineralization of the Khovu-Aksy Ag–Bi–Cu–Ni–Co deposit has been established for the first time.

中文翻译：

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Kovu-Aksy Ag-Bi-Cu-Ni-Co 矿床（图瓦共和国）早期形成阶段的年龄：U-Pb (ID-TIMS) 石榴石地质年代学研究

摘要

对来自 Kovu-Aksy Ag-Bi-Cu-Ni-Co 矿床（图瓦共和国）三种类型疤痕组合的石榴石进行了矿物学和 U-Pb (ID-TIMS) 年代学研究。 U-Pb 石榴石年龄估计（404 ± 2 Ma）接近阿尔泰-萨彦褶皱区域图瓦海槽内发现的早泥盆世基岩和碱性基岩岩浆活动。首次确定了 Kovu-Aksy Ag-Bi-Cu-Ni-Co 矿床疤痕形成的年龄和相关的早期矿化阶段。