Abstract

Many massive sulfide ore occurrences and deposits in the Kola region are located within the Paleoproterozoic Pechenga–Imandra–Varzuga rift belt (2.5–1.7 Ga). They are hosted by volcanosedimentary complexes of the South Pechenga (Bragino ore occurrence) and western Imandra–Varzuga structural zones (Pirrotinovoe Ushchel’e deposit, Tahtarvumchorr ore occurrence, etc.). The age of the massive sulfide ore was estimated at ca. 1.9 Ga. The ores and their host complexes underwent amphibolite-facies metamorphism, which accounts for their specific mineral composition. The types of ores in the Bragino ore occurrence are discussed, the mineral assemblages are listed, and the major ore minerals, that is, pyrrhotite, pyrite, sphalerite, marcasite, etc., are characterized.

中文翻译：

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可乐地区古元古代变质块状硫化矿石的矿物组成（以南佩城加布拉吉诺矿床为例）

摘要

科拉地区有许多块状硫化物矿床和矿床位于古元古代的佩城加－伊曼德拉－瓦祖加裂谷带（2.5－1.7 Ga）内。它们是由南Pechenga（布拉贡铁矿发生）和Imandra-Varzuga西部构造带（Pirrotinovoe Ushchel'e矿床，Tahtarvumchorr矿石发生等）的火山岩沉积复合体所包裹。块状硫化物矿石的年龄估计约为。1.9 Ga。矿石及其宿主复合物经历了闪石相变质作用，这说明了它们的特定矿物成分。讨论了Bragino矿床中的矿石类型，列出了矿物组合，并表征了主要矿石矿物，即黄铁矿，黄铁矿，闪锌矿，镁铁矿等。