Revealing Prospects of New Gold–Copper-Porphyry Deposits of the Malmyzh Type in the Lower Amur Region (Russian Far East)

IF 0.8 4区地球科学 Q3 GEOLOGY Geology of Ore Deposits Pub Date : 2024-03-06 DOI:10.1134/s107570152307019x

O. V. Petrov, V. V. Shatov, A. I. Khanchuk, V. V. Ivanov, Yu. P. Zmievsky, V. I. Shpikerman, E. O. Petrov, V. V. Snezhko, A. V. Shmanyak, A. V. Molchanov, V. O. Khalenev, N. V. Shatova, N.V. Rodionov, B. V. Belyatsky, S. A. Sergeev

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Abstract

In this paper, we discuss new data obtained by petrographical, geochemical, geochronological, and isotopic–geochemical study of magmatic rocks within the Malmyzh and Gion gold–copper-porphyry ore fields. Geochronological data show a Late Cretaceous age of their magmatic crystallization: Cenomanian (97–99 Ma) and Campanian (76–82 Ma) ages, respectively. Based on a comparative analysis of the studied samples igneous rocks with each other and with magmatic rocks of worldwide porphyry deposits, the results of a study using a secondary ion mass spectrometer of the patterns of distribution of trace elements (REE + Y, Hf, Ti, U, Th, and Pb) in accessory zircons from igneous rocks of the Malmyzh and Gion ore fields are discussed in order to estimate their potential ore content in the gold–copper-porphyry mineralization. Despite the fact that economic gold–copper ore mineralization within the potential Gion ore field was previously unknown, an analysis of the results shows, that according to the obtained values of indicative geochemical parameters of accessory zircons, the granitoids involved in its geological structure practically do not differ from the granitoids of both the neighboring Malmyzh deposit and most of the worldwide porphyry gold–copper deposits.

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揭示下阿穆尔州（俄罗斯远东地区）马尔米日型新金铜斑岩矿床的前景

摘要本文讨论了通过对马尔米日和吉翁金铜斑岩矿田内的岩浆岩进行岩相学、地球化学、地质年代学和同位素地球化学研究获得的新数据。地质年代数据显示其岩浆结晶年代为晚白垩世：分别为仙人纪（97-99Ma）和康潘纪（76-82Ma）。在对所研究的火成岩样本进行相互比较分析以及与世界斑岩矿床岩浆岩进行比较分析的基础上，讨论了使用二次离子质谱仪对马尔米日和吉翁矿田火成岩附属锆石中微量元素（REE + Y、Hf、Ti、U、Th 和 Pb）的分布模式进行研究的结果，以估计其在金-铜-斑岩矿化中的潜在矿石含量。尽管吉翁潜在矿田内的经济型金铜矿成矿作用以前并不为人所知，但对结果的分析表明，根据所获得的附属锆石指示性地球化学参数值，其地质结构所涉及的花岗岩实际上与邻近的马尔米日矿床和世界上大多数斑岩型金铜矿床的花岗岩并无不同。

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来源期刊

Geology of Ore Deposits 地学-地质学

CiteScore

1.10

自引率

14.30%

发文量

审稿时长

6-12 weeks

期刊介绍： Geology of Ore Deposits is a periodical covering the topic of metallic and nonmetallic mineral deposits, their formation conditions, and spatial and temporal distribution. The journal publishes original scientific articles and reviews on a wide range of problems in theoretical and applied geology. The journal focuses on the following problems: deep geological structure and geodynamic environment of ore formation; distribution pattern of metallogenic zones and mineral deposits; geology and formation environment of large and unique metallic and nonmetallic deposits; mineralogy of metallic and nonmetallic deposits; physicochemical and isotopic characteristics and geochemical environment of ore deposition; evolution of ore-forming systems; radiogeology and radioecology, economic problems in exploring, developing, and mining of ore commodities.