Мінеральні ресурси України (Oct 2023)

Rore bearing of the Poromivske ilmenite deposit

  • H. O. Kuzmanenko,
  • T. V. Okholina,
  • O. A. Ganzha,
  • O. V. Yaremenko

DOI
https://doi.org/10.31996/mru.2023.3.3-7
Journal volume & issue
no. 3
pp. 3 – 7

Abstract

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The geological structure, formation conditions, and ore-bearing capacity of the Poromivsk ilmenite deposit (part of the Irshansk placers group of the Volyn titanium-bearing district) were researched. This deposit is a typical object of close wear, a lithostratigraphic scheme has been constructed for it, in which it is noted that the deposit is composed of weathering crust (70%) and sediments (30%). The residual weathering crust is spatially and compositionally closely related to the ilmenite-rich native rocks of the main composition (gabbro, gabbronorite, peridotite, gabbroanorthosite), which served as an important supplier of ore material. The concentration of ilmenite in the productive alluvial part of the deposit is related to the ilmenite content of the weathering crust underlying these placers. Based on the coordinates and description of the wells, and the test results, a database was created. It became the basis for cartographic constructions. A visualization of the deposit structure (hypsometry of the sole of the ore-bearing deposits and the thickness of the productive layer); visualization of placer qualitative indicators (maps of the distribution of ilmenite in the eluvial and alluvial parts of the ore-bearing layer, and their total distribution within the two productive layers) was constructed by ArcGIS software. The maximum ilmenite content of the alluvial part of the placer are traced in the form of single lenses and bands. It is concentrated in the central and south-eastern parts of the deposit and vary from 88 to 130 kg/m³. The productive eluvial part of the deposit has more even distribution of ilmenite. The maximum values are concentrated in the central and southern part of the deposit and average 55-77 kg/m³. The thickness of the ore layer are correlated with the sole relief. The largest values of the thickness of the productive deposits confined to the lowered areas of the sole hypsometry. The constructed maps was created an overview of the ore-bearing capacity of deposits from different ages, which can serve as an information base for setting up and supporting mining works within the deposit.

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