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对黑龙江省84个砂金样品及7个岩金样品,用等离子质谱仪分析了它们的稀土元素含量。岩金以稀土总量低,轻重稀土分离程度小为特征,不同类型岩金矿床的自然金,其稀土配分曲线有明显差异。砂金样品则以较富集轻稀土为特征,稀土元素含量继承了岩金的部分特点。自然金稀土元素的赋存状态为U、Th矿物的微细包体,其分配特点可用来讨论岩金矿床的分类以及砂金的原生来源。
84 gold sands samples and 7 gold samples from Heilongjiang Province were analyzed by ICP-AES. Rock gold is characterized by a low total rare earth content and a small degree of separation of light and heavy rare earths. Natural gold in different types of rock-gold deposits have significant differences in the distribution patterns of rare earth elements. The samples of sapphire are characterized by a relatively enriched light rare earth, and the rare earth elements inherit some of the characteristics of the gold deposits. Natural gold Rare Earth elements of the U, Th mineral inclusions, the distribution of characteristics can be used to discuss the classification of gold and gold deposits and gold source of gold.