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Fluid types and their genetic meaning for the BIF-hosted iron ores, Krivoy Rog, Ukraine

Marta Sośnicka, Ronald J. Bakker

2015enbanded iron formationBIFfluid inclusionshigh-grade iron oreore genesis

Abstract

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This paper contributes to the understanding of the genesis of epigenetic, hypogene BIF-hosted iron deposits situated in the eastern part of Ukrainian Shield. It presents new data from the Krivoy Rog iron mining district (Skelevatske–Magnetitove deposit, Frunze underground mine, and Balka Severnaya Krasnaya outcrop) and focuses on the investigation of ore genesis through application of fluid inclusion petrography, microthermometry, Raman spectroscopy, and baro-acoustic decrepitation of fluid inclusions. The study investigates inclusions preserved in quartz and magnetite associated with the low-grade iron ores (31–37% Fe) and iron-rich quartzites (38–45% Fe) of the Saksaganskaya Suite, as well as magnetite from the locally named high-grade iron ores (52–56% Fe). These high-grade ores resulted from alteration of iron quartzites in the Saksaganskiy thrust footwall (Saksaganskiy tectonic block) and were a precursor to supergene martite, high-grade ores (60–70% Fe). Based on the new data, two stages of iron ore formation (metamorphic and metasomatic) are proposed.

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Cite This Work

@article{c79177bf-41ef-4f3e-9667-3f0c85921766,
  title={Fluid types and their genetic meaning for the BIF-hosted iron ores, Krivoy Rog, Ukraine},
  author={Marta Sośnicka and Ronald J. Bakker},
  year={2015},
  language={en}
}
TY  - JOUR
TI  - Fluid types and their genetic meaning for the BIF-hosted iron ores, Krivoy Rog, Ukraine
AU  - Marta Sośnicka
AU  - Ronald J. Bakker
PY  - 2015
LA  - en
ER  -

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