阿塞拜疆小高加索Goshgarchay斑岩铜矿床基性矿石组分分布特征

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The main objective of the research is to study distribution peculiarities of basic ore components of Goshgarchay deposits, to detect geochemical features and behaviour of elements in the process of sedimentation by developing geochemical criteria of the search and the prognosis of hidden mineralization. Methods. The author studied the distribution problem of basic ore components of copper-porphyry mineralization, carried out field investigations (field researches), documented and tested underground mine working and core samples of over seventy well bores. When choosing the type of analysis, a special attention was paid to the sensitivity and exactness of the determination method. Analytical work was conducted according to the definition of chemical elements. The following types of analytical methods were used: chemical, atomic-absorption, spectral-chemical, etc. The analytical data were processed by the method of mathematical statistics. Results. As follows from the analysis of the above-mentioned results, the elements flaccid for hydrothermal solutions (Cr, Ni, V, Co, Mn, Ti) keep their independence in all groups of rocks. Their grouping is probably associated with the process of crystallized differentiation of magma. The elements Cu, Pb, Zn, Ag and partly Mo, don’t have specific place. Their presence is likely associated with the degree of rocks susceptibility, hydrothermal interaction being the source of these elements. In various types of ores and mineral associations the definition of elemental impurities is different. Their amount increases the amount (quantity) of clarke and coefficient of concentration a thousand times. Three different mineral associations coexist in the ore body: 1-primary sulphide-chalcopyrite and bornite-chalcopyrite ore. 2-oxidized ore and zone of secondary enrichment. 3-primary sulphide ore, significantly enriched in copper. Scientific novelty. Based on existing analytical data, the author studied distribution of basic ore and admixture components (gangue) and basic sulphide minerals. The concentration in series of elemental impurities were detailed in ore-bearing rocks of copper-porphyry deposits of Goshgarchay. The primary geochemical zonality was revealed in the distribution of basic ore-containing components in the ore body of copper-porphyry deposits of Goshgarchay ore field. Practical significance. 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The author studied the distribution problem of basic ore components of copper-porphyry mineralization, carried out field investigations (field researches), documented and tested underground mine working and core samples of over seventy well bores. When choosing the type of analysis, a special attention was paid to the sensitivity and exactness of the determination method. Analytical work was conducted according to the definition of chemical elements. The following types of analytical methods were used: chemical, atomic-absorption, spectral-chemical, etc. The analytical data were processed by the method of mathematical statistics. Results. As follows from the analysis of the above-mentioned results, the elements flaccid for hydrothermal solutions (Cr, Ni, V, Co, Mn, Ti) keep their independence in all groups of rocks. Their grouping is probably associated with the process of crystallized differentiation of magma. The elements Cu, Pb, Zn, Ag and partly Mo, don’t have specific place. 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引用次数: 1

摘要

问题的表述。铜斑岩矿床规模大、储量大,以及采用合理的金属提取方法的可能性,决定了人们对铜斑岩矿床的兴趣日益浓厚。今天,它们是铜、钼等金属的主要原料,并伴随世界各地的金属。这些矿床的价值在于它们位于地质研究充分的地区。但其基本组分及伴生组分中Cu、Mo、Au、Ag、Bi、Re、Se、Te含量相对较低,分布面积较大。文章的目的。研究的主要目的是通过建立找矿地球化学标准和隐伏矿化预测,研究戈什加尔察矿床基性矿物组分的分布特点,探测沉积过程中元素的地球化学特征和行为。作者研究了铜斑岩矿化基本矿成分的分布问题,进行了实地调查,对七十多口井的井下工作和岩心样品进行了记录和测试。在选择分析类型时,应特别注意测定方法的灵敏度和准确性。分析工作是根据化学元素的定义进行的。采用了化学、原子吸收、光谱化学等分析方法。分析数据采用数理统计方法进行处理。从上述结果分析可知,在热液溶液中软化的元素(Cr、Ni、V、Co、Mn、Ti)在各组岩石中均保持独立。它们的组合可能与岩浆的结晶分异过程有关。元素Cu, Pb, Zn, Ag和部分Mo,没有特定的位置。它们的存在可能与岩石的易感性程度有关,热液相互作用是这些元素的来源。在不同类型的矿石和矿物组合中,元素杂质的定义是不同的。它们的数量使克拉克的数量和浓度系数增加了一千倍。矿体中存在3种不同的矿物组合:1-原生硫化物-黄铜矿和斑铜矿-黄铜矿;2-氧化矿和次生富集带。3-原生硫化物矿石,铜显著富集。科学的新奇。在现有分析资料的基础上,研究了基性矿石及其掺合物组分(脉石)和基性硫化物矿物的分布。详细介绍了戈什加尔察铜斑岩矿床含矿岩中元素杂质系列的浓度。戈什加尔察矿田铜斑岩矿床矿体中基性含矿组分分布具有原生地球化学地带性。现实意义。揭示了矿体和寄主岩(围岩)中基性矿成分分布的特殊性,以及指示元素杂质富集的因素,可作为铜斑岩成矿预测的地球化学判据,支持了研究的有效方向。
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Distribution peculiarities of basic ore components in Goshgarchay porphyrous copper deposit (lesser Caucasus, Azerbaijan)
Formulation of the problem. Large size and great reserves, as well as the possibility to apply rational methods of metals extraction predetermined the increasing interest to the copper-porphyry deposits. Today, they are the main raw material based on Cu, Mo, accompanying metals all over the world. The value of these deposits lie in the fact that they are in located in geologically well-studied regions. However, their ores in basic and associated components have relatively small content of Cu, Mo, Au, Ag, Bi, Re, Se, Te, spreading in large area. The purpose of the article. The main objective of the research is to study distribution peculiarities of basic ore components of Goshgarchay deposits, to detect geochemical features and behaviour of elements in the process of sedimentation by developing geochemical criteria of the search and the prognosis of hidden mineralization. Methods. The author studied the distribution problem of basic ore components of copper-porphyry mineralization, carried out field investigations (field researches), documented and tested underground mine working and core samples of over seventy well bores. When choosing the type of analysis, a special attention was paid to the sensitivity and exactness of the determination method. Analytical work was conducted according to the definition of chemical elements. The following types of analytical methods were used: chemical, atomic-absorption, spectral-chemical, etc. The analytical data were processed by the method of mathematical statistics. Results. As follows from the analysis of the above-mentioned results, the elements flaccid for hydrothermal solutions (Cr, Ni, V, Co, Mn, Ti) keep their independence in all groups of rocks. Their grouping is probably associated with the process of crystallized differentiation of magma. The elements Cu, Pb, Zn, Ag and partly Mo, don’t have specific place. Their presence is likely associated with the degree of rocks susceptibility, hydrothermal interaction being the source of these elements. In various types of ores and mineral associations the definition of elemental impurities is different. Their amount increases the amount (quantity) of clarke and coefficient of concentration a thousand times. Three different mineral associations coexist in the ore body: 1-primary sulphide-chalcopyrite and bornite-chalcopyrite ore. 2-oxidized ore and zone of secondary enrichment. 3-primary sulphide ore, significantly enriched in copper. Scientific novelty. Based on existing analytical data, the author studied distribution of basic ore and admixture components (gangue) and basic sulphide minerals. The concentration in series of elemental impurities were detailed in ore-bearing rocks of copper-porphyry deposits of Goshgarchay. The primary geochemical zonality was revealed in the distribution of basic ore-containing components in the ore body of copper-porphyry deposits of Goshgarchay ore field. Practical significance. The revealed peculiarities of the distribution of basic ore components in the ore body and host rocks (wallrock), the factors contributing to the accumulation of indicated elemental impurities can be used as geochemical criteria for the prognosis of copper-porphyry mineralization , supporting the effective directions of the research.
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