The Mineral Composition of Paleoproterozoic Metamorphosed Massive Sulfide Ores in the Kola Region (A Case Study of the Bragino Ore Occurrence, Southern Pechenga)

被引：0
作者：
Kompanchenko, A. A. [1 ]
Voloshin, A. V. [1 ]
Bazai, A. V. [1 ]
机构：
[1] Russian Acad Sci, Kola Sci Ctr, Geol Inst, Apatity 184209, Russia
来源：
GEOLOGY OF ORE DEPOSITS | 2020年 / 62卷 / 07期
关键词：
massive sulfide ores; pyrite; pyrrhotite; Paleoproterozoic; Kola region;
D O I：
10.1134/S1075701520070077
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
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.
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页码：618 / 628
页数：11
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