Rare earths of the Murmansk Region, NW Russia: minerals, extraction technologies and value

Kalashnikov, Andrey O.; Коноплева, Н. Г.; Danilin, Konstantin P.

doi:10.1080/25726838.2022.2153000

Cited by 4 publications

(1 citation statement)

References 68 publications

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“…On the territory of the Kola Peninsula there are about 60 large deposits of mineral raw materials, the most valuable of which are apatite-nepheline, copper-nickel, iron and rare-earth ores [38]. One preliminary estimate of the expected value of existing REE reserves on the Kola Peninsula gave a figure of about USD 700 billion [39]. The only active deposit of loparite ores is located in the center of the peninsula (Figure 1).…”

Section: Introductionmentioning

confidence: 99%

Tolerance of Rare-Earth Elements in Extremophile Fungus Umbelopsis isabellina from Polar Loparite Ore Tailings in Northwestern Russia

Шумилов

Касаткина

Кirtsideli

et al. 2023

JoF

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In this study, extremophile fungal species isolated from pure loparite-containing sands and their tolerance/resistance to the lanthanides Ce and Nd were investigated. The loparite-containing sands were collected at the tailing dumps of an enterprise developing a unique polar deposit of niobium, tantalum and rare-earth elements (REEs) of the cerium group: the Lovozersky Mining and Processing Plant (MPP), located in the center of the Kola Peninsula (northwestern Russia). From the 15 fungal species found at the site, one of the most dominant isolates was identified by molecular analysis as the zygomycete fungus Umbelopsis isabellina (GenBank accession no. OQ165236). Fungal tolerance/resistance was evaluated using different concentrations of CeCl3 and NdCl3. Umbelopsis isabellina exhibited a higher degree of tolerance/resistance to cerium and neodymium than did the other dominant isolates (Aspergillus niveoglaucus, Geomyces vinaceus and Penicillium simplicissimum). The fungus began to be inhibited only after being exposed to 100 mg L−1 of NdCl3. The toxic effects of Ce were not observed in fungus growth until it was subjected to 500 mg∙L−1 of CeCl3. Moreover, only U. isabellina started to grow after extreme treatment with 1000 mg∙L−1 of CeCl3 one month after inoculation. This work indicates, for the first time, the potential of Umbelopsis isabellina to remove REEs from the loparite ore tailings, making it a suitable candidate for the development of bioleaching methods.

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Section: Introductionmentioning

confidence: 99%

Tolerance of Rare-Earth Elements in Extremophile Fungus Umbelopsis isabellina from Polar Loparite Ore Tailings in Northwestern Russia

Шумилов

Касаткина

Кirtsideli

et al. 2023

JoF

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Corrigendum to “Apatite-rich zones in the Uppermost Upper Zone, Northern Limb, Bushveld Complex: Possible non-conventional source of REE and TiO2” [J. Geochem. Explor. (2024) [107498] [263C]]

Mandende,

Mothupi

2024

Journal of Geochemical Exploration

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Byproduct-to-Host Ratios for Assessing the Accessibility of Mineral Resources

Greffe,

Frenzel,

Werner

et al. 2024

Environ. Sci. Technol.

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Mineral resources are essential for reaching net-zero ambitions by 2050. There is a rising diversity of metals in electricity generation and storage technologies, as well as for mobility technologies. However, little is known about the future supply of minor elements historically mined in low volumes such as indium, tellurium, germanium, or tantalum. Those minor elements are found in lower concentrations in the ores of major elements and therefore rarely form economic deposits on their own. Such elements are often produced as byproducts of a host (or "target commodity", which underpins the bulk of a mine's profitability) in ore, e.g., in porphyry ore, tellurium is a byproduct where copper is the host. As a result, the primary supply of those minor elements depends on the supply of the major elements. Such dependency has not been accounted for in scenarios of the mineral supply. To address this gap, we developed a methodology to harmonize scattered data of mineral resource estimates and to calculate the mass ratio between the byproduct and the host in ores and concentrates, called the byproduct-to-host (BtH) ratio. We collected crude ore tonnage and element grades, among other key data, from the state-of-the-art literature and publicly available mining company reports. Our data set covers 3422 deposits across 141 countries providing 22 275 BtH ratios. The future supply of minor elements can be derived by multiplying the primary production of host elements by the developed BtH ratios, noting the limitations of data representativity. The open-access nature of this work facilitates the enrichment and update of this data set in the coming years.

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Rare earths of the Murmansk Region, NW Russia: minerals, extraction technologies and value

Cited by 4 publications

References 68 publications

Tolerance of Rare-Earth Elements in Extremophile Fungus Umbelopsis isabellina from Polar Loparite Ore Tailings in Northwestern Russia

Tolerance of Rare-Earth Elements in Extremophile Fungus Umbelopsis isabellina from Polar Loparite Ore Tailings in Northwestern Russia

Corrigendum to “Apatite-rich zones in the Uppermost Upper Zone, Northern Limb, Bushveld Complex: Possible non-conventional source of REE and TiO2” [J. Geochem. Explor. (2024) [107498] [263C]]

Byproduct-to-Host Ratios for Assessing the Accessibility of Mineral Resources

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