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首页> 外文期刊>Geology of Ore Deposits: A Journal of Theoretical and Applied Papers on All Aspects of Ore Genesis >The Prognoz Silver-Polymetallic Deposit,Sakha (Yakutia):Chemistry and zoning of Ore Veins
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The Prognoz Silver-Polymetallic Deposit,Sakha (Yakutia):Chemistry and zoning of Ore Veins

机译：萨哈（雅库特）的Prognoz银多金属矿床：矿脉的化学和分区

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摘要

The chemical composition of minerals and their distribution in ore bodies of the Prognoz silver- polymetallic deposit has been studied.The deposit is one of the largest in northeast Russia,and its mineralogy is characterized by a great variety of mineral types and isomorphism of some elements in minerals.Amidst minerals with the alternate composition,there are arsenopyrite with varying Ni and Sb content and pyrite with greatly varying As concentration.Nearly complete isomorphous series of minerals stannite-kesterite and tetrahedrite-freibergite have been revealed.Replacement of Sb and Bi in the possible isomorphous series andoritegustavite and miargyrite-aramayoite is discussed.Both lateral and vertical zoning in the distribution of minerals and the change in their properties are clearly evident in the deposit.The vertical zoning is the most pronounced;it is determined by the confinement of latestage Ag-bearing assemblages to upper levels of the deposit and manifests itself in changing carbonate and sphalerite ferruginosity,the Ag content in sulfosalts,and the trace element content in quartz.Mineralogical features indicate wavelike zoning.The zoning of silver-Polymetallic deposits of eastern Yakutia has been described for the first time.The complicated nature and heteroge- neity of the mineral composition,wide variations in isomorphism with coexistence of phases of different com- position,and numerous ex solution structures confirm a complicated genesis of the deposit,as was previously suggested by the authors.
机译：研究了Prognoz银多金属矿床的矿物化学成分及其在矿体中的分布。该矿床是俄罗斯东北部最大的矿床之一，其矿物学特征是多种矿物类型和某些元素的同构性在组成交替的矿物中，有镍铁和锑含量变化的毒砂和砷含量变化很大的黄铁矿。矿床分布的横向和垂直分区及其性质的变化在矿床中均明显可见。垂直分区是最明显的;这取决于矿床的局限性。最新的含银组合物到矿床的上层，并在变化中表现出来碳酸盐岩和闪锌矿铁素体，硫盐中的Ag含量和石英中的微量元素含量。如作者先前所言，矿物组成的变化，同构的广泛变化以及不同组成的相的共存，以及众多的前溶液结构证实了该矿床的复杂成因。

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