Abstract —The article discusses the distribution of rare-earth elements in the igneous and metasomatic rocks of the Murovdag ore district of the Lesser Caucasus. It has been established that the metasomatites and host rocks of the Murovdag ore district are characterized by the predominance of light rare-earth elements over heavy ones. The whole complex of the data obtained indicates that the components of the magmatic nature prevailed in the composition of the ore-forming fluids. However, mixing of magmatic fluids with meteoric waters is not excluded. It has been found that metasomatites and host magmatic rocks of the studied deposits have similar REE distribution patterns, which may indicate that metasomatic rocks were developed after igneous protolith of this composition.

中文翻译：

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Murovdag 矿区（小高加索）岩浆和交代岩中的稀土元素

摘要——本文讨论了小高加索穆罗夫达格矿区火成岩和交代岩中稀土元素的分布。已经确定，Murovdag 矿区的交代岩和主岩的特点是轻稀土元素多于重稀土元素。获得的整个数据表明，岩浆性质的成分在成矿流体的组成中占主导地位。然而，不排除岩浆流体与大气水的混合。研究发现，所研究矿床的交代岩和寄主岩浆岩具有相似的稀土元素分布模式，这可能表明交代岩是在这种成分的火成岩原岩之后发育的。