Abstract

New results of thermobarogeochemical studies show that quartz veins in the Drazhnoe deposit were formed under mesozonal conditions at a depth of 3–9 km from heterogeneous carbon dioxide–aqueous fluids with a low concentration of brines and high contents of CO₂, which is typical of ore-forming fluids in orogenic vein gold deposits. Based on the phase composition, three types of fluid inclusions are distinguished: (1) carbon dioxide–aqueous; (2) gaseous, filled with dense carbon dioxide; and (3) a two-phase gas–liquid of aqueous–brine solutions. Na, Mg, and Fe chlorides predominated in the ore-forming fluids. It is assumed that the fluids migrated along the regional Adycha–Taryn shear zone and were uplifted to the Earth’s surface at a supra-lithostatic pressure, which was followed by precipitation of ore elements and the formation of quartz veins during tectonic movements along shear zones.

中文翻译：

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萨哈共和国（雅库特）德拉日诺矿床金矿化条件的新数据：流体包裹体研究的证据

摘要

热压地球化学研究的新结果表明，Drazhnoe 矿床中的石英脉是在中带条件下形成的，位于 3-9 公里深度的非均质二氧化碳 - 含低浓度盐水和高 CO ₂含量的水相流体，这是典型的造山脉金矿床成矿流体。根据相组成，流体包裹体可分为三种类型：（1）二氧化碳-水相；(2)气态，充满浓密的二氧化碳；(3) 两相气-液的水溶液-盐水。Na、Mg 和 Fe 的氯化物在成矿流体中占主导地位。假设流体沿着区域 Adycha-Taryn 剪切带运移，并在超岩石静压下抬升到地球表面，随后在沿剪切带的构造运动期间发生矿石元素沉淀和石英脉的形成。