Magmatic–Fluid System of the Vysokogorskoe Porphyry Tin Deposit (Sikhote-Alin, Kavalerovo Ore District, Primorsky Krai, Russia): a Magmatic Stage

IF 0.8 4区地球科学 Q3 GEOLOGY Geology of Ore Deposits Pub Date : 2024-03-06 DOI:10.1134/s107570152307022x

E. N. Sokolova, S. Z. Smirnov, V. S. Sekisova, N. S. Bortnikov, N. V. Gorelikova, V. G. Thomas

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Abstract

Inclusions of the mineral-forming media in quartz of the Vysokogorskoe deposit are studied in detail. The compositions of the melts correspond to peraluminous potassium granites of normal alkalinity, depleted in rare alkalis, F, and Cl. The water content in the melts reached 7–9 wt %; CO₂ and CH₄ were also important in mineralizing fluids. Quartz crystallized at 620–650°C. Assemblages of four types have been identified as primary fluid inclusions: (1) inclusions of carbonate or sulfate aqueous solutions coexisting with melt inclusions, (2) low-density vapor-dominated primarily magmatic inclusions, (3) presumably postmagmatic low-salinity aqueous and vapor-dominated inclusions, and (4) multiphase fluid inclusions associated with vapor-dominated ones also formed at the postmagmatic stage. Daughter pyrosmalite–(Fe) and hibbingite, which was found for the first time in inclusions from quartz of the Vysokogorskoe deposit, made it possible to characterize the solutions as high-salinity chloride Na/K and Fe²⁺. Presumably, those solutions may have been the most efficient in Sn transport during the formation of fluid–explosive breccias and vein mineralization of the Vysokogorskoe deposit. The magma chamber itself most likely served as a heat source and, to a large extent, a source of aqueous fluid for the hydrothermal system of the deposit.

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Vysokogorskoe 斑岩锡矿床（俄罗斯滨海边疆区卡瓦列罗沃矿区锡霍特-阿林）的岩浆-流体系统：岩浆阶段

摘要详细研究了 Vysokogorskoe 矿床石英中矿物形成介质的包裹体。熔体的成分符合正常碱度的过铝钾花岗岩，稀有碱、F 和 Cl 的含量很低。熔体中的含水量达到 7-9 wt %；CO2 和 CH4 也是重要的成矿流体。石英的结晶温度为 620-650°C。已确定的原生流体包裹体有四种类型：(1)与熔融包裹体共存的碳酸盐或硫酸盐水溶液包裹体；(2)主要以岩浆包裹体为主的低密度蒸汽包裹体；(3)推测为岩浆后阶段形成的低盐度水溶液和蒸汽包裹体；以及(4)在岩浆后阶段形成的与蒸汽包裹体有关的多相流体包裹体。在 Vysokogorskoe 矿床的石英包裹体中首次发现了子火成岩（铁）和蛭石，因此可以将溶液定性为高盐度氯化物 Na/K 和 Fe2+。据推测，在 Vysokogorskoe 矿床的流体-爆炸性角砾岩和矿脉矿化的形成过程中，这些溶液可能是最有效的 Sn 运输。岩浆室本身很可能是热源，在很大程度上也是矿床热液系统的水溶液源。

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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.