Alumina Hosts in Fe- and Al-Rich Metapelites from Transangaria (Yenisey Ridge, East Siberia): Distribution, Composition, and Mining Potential
Fe- and Al-rich metapelite from the Transangarian segment of the Yenisey Ridge (East Siberia, Russia) is a potential new source of high-alumina refractories. The rocks have relatively high average contents of Al<sub>2</sub>O<sub>3</sub> (20 wt%) and Fe<sub>2</sub>...
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MDPI AG
2023-10-01
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| Series: | Minerals |
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| Online Access: | https://www.mdpi.com/2075-163X/13/10/1316 |
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| author | Ella V. Sokol Svetlana N. Kokh Anna V. Nekipelova Igor I. Likhanov Anna S. Deviatiiarova Pavel V. Khvorov |
| author_facet | Ella V. Sokol Svetlana N. Kokh Anna V. Nekipelova Igor I. Likhanov Anna S. Deviatiiarova Pavel V. Khvorov |
| author_sort | Ella V. Sokol |
| collection | DOAJ |
| description | Fe- and Al-rich metapelite from the Transangarian segment of the Yenisey Ridge (East Siberia, Russia) is a potential new source of high-alumina refractories. The rocks have relatively high average contents of Al<sub>2</sub>O<sub>3</sub> (20 wt%) and Fe<sub>2</sub>O<sub>3</sub> (7.91 wt%), moderate K<sub>2</sub>O (3.44 wt%), and low CaO (0.74 wt%). Their dominant mineral assemblages are andalusite + muscovite + margarite + chlorite + biotite + quartz or staurolite + kyanite or/and andalusite + chlorite + muscovite + biotite + quartz with ±garnet and ±plagioclase. Al<sub>2</sub>SiO<sub>5</sub> polymorphs occur as up to 1.5 cm andalusite porphyroblasts and partial or complete pseudomorphs after andalusite (kyanite and staurolite). Accessories include abundant Fe–Ti oxides and sporadic REE-, Y-, Ca-phosphates; sulfides are negligible. The composition of Al<sub>2</sub>SiO<sub>5</sub> concentrates obtained in laboratory by heavy-media and magnetic separation from ≥0.06 mm fractions meet all requirements for raw material of this type: >56 wt% Al<sub>2</sub>O<sub>3</sub>, <42 wt% SiO<sub>2</sub>, <1 wt% Fe<sub>2</sub>O<sub>3</sub>, <1.2 wt% TiO<sub>2</sub>, and <0.2 wt% (CaO + MgO). The andalusite, kyanite, and mixed ores yield 0.7–4.1 wt%, 0.7–2.2 wt%, and 1.9–6.0 wt% of concentrate, respectively. The best-quality ores rich in Al<sub>2</sub>SiO<sub>5</sub> polymorphs reside in zones of contact and/or dynamic metamorphism superimposed over regional metamorphism of Al-rich rocks. |
| first_indexed | 2024-03-10T21:01:25Z |
| format | Article |
| id | doaj.art-374f0f354008413e9332188c57df09e9 |
| institution | Directory Open Access Journal |
| issn | 2075-163X |
| language | English |
| last_indexed | 2024-03-10T21:01:25Z |
| publishDate | 2023-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Minerals |
| spelling | doaj.art-374f0f354008413e9332188c57df09e92023-11-19T17:30:43ZengMDPI AGMinerals2075-163X2023-10-011310131610.3390/min13101316Alumina Hosts in Fe- and Al-Rich Metapelites from Transangaria (Yenisey Ridge, East Siberia): Distribution, Composition, and Mining PotentialElla V. Sokol0Svetlana N. Kokh1Anna V. Nekipelova2Igor I. Likhanov3Anna S. Deviatiiarova4Pavel V. Khvorov5V.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch Russian Academy of Sciences, 3 Acad. Koptyug Avenue, Novosibirsk 630090, RussiaV.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch Russian Academy of Sciences, 3 Acad. Koptyug Avenue, Novosibirsk 630090, RussiaV.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch Russian Academy of Sciences, 3 Acad. Koptyug Avenue, Novosibirsk 630090, RussiaV.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch Russian Academy of Sciences, 3 Acad. Koptyug Avenue, Novosibirsk 630090, RussiaV.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch Russian Academy of Sciences, 3 Acad. Koptyug Avenue, Novosibirsk 630090, RussiaSouth Urals Federal Research Center of Mineralogy and Geoecology, Urals Branch, Russian Academy of Sciences, Institute of Mineralogy, Ilmeny Reserve Area, Miass 456317, RussiaFe- and Al-rich metapelite from the Transangarian segment of the Yenisey Ridge (East Siberia, Russia) is a potential new source of high-alumina refractories. The rocks have relatively high average contents of Al<sub>2</sub>O<sub>3</sub> (20 wt%) and Fe<sub>2</sub>O<sub>3</sub> (7.91 wt%), moderate K<sub>2</sub>O (3.44 wt%), and low CaO (0.74 wt%). Their dominant mineral assemblages are andalusite + muscovite + margarite + chlorite + biotite + quartz or staurolite + kyanite or/and andalusite + chlorite + muscovite + biotite + quartz with ±garnet and ±plagioclase. Al<sub>2</sub>SiO<sub>5</sub> polymorphs occur as up to 1.5 cm andalusite porphyroblasts and partial or complete pseudomorphs after andalusite (kyanite and staurolite). Accessories include abundant Fe–Ti oxides and sporadic REE-, Y-, Ca-phosphates; sulfides are negligible. The composition of Al<sub>2</sub>SiO<sub>5</sub> concentrates obtained in laboratory by heavy-media and magnetic separation from ≥0.06 mm fractions meet all requirements for raw material of this type: >56 wt% Al<sub>2</sub>O<sub>3</sub>, <42 wt% SiO<sub>2</sub>, <1 wt% Fe<sub>2</sub>O<sub>3</sub>, <1.2 wt% TiO<sub>2</sub>, and <0.2 wt% (CaO + MgO). The andalusite, kyanite, and mixed ores yield 0.7–4.1 wt%, 0.7–2.2 wt%, and 1.9–6.0 wt% of concentrate, respectively. The best-quality ores rich in Al<sub>2</sub>SiO<sub>5</sub> polymorphs reside in zones of contact and/or dynamic metamorphism superimposed over regional metamorphism of Al-rich rocks.https://www.mdpi.com/2075-163X/13/10/1316andalusitekyaniteFe- and Al-rich metapelitesAl<sub>2</sub>SiO<sub>5</sub> concentratesYenisey Ridge |
| spellingShingle | Ella V. Sokol Svetlana N. Kokh Anna V. Nekipelova Igor I. Likhanov Anna S. Deviatiiarova Pavel V. Khvorov Alumina Hosts in Fe- and Al-Rich Metapelites from Transangaria (Yenisey Ridge, East Siberia): Distribution, Composition, and Mining Potential Minerals andalusite kyanite Fe- and Al-rich metapelites Al<sub>2</sub>SiO<sub>5</sub> concentrates Yenisey Ridge |
| title | Alumina Hosts in Fe- and Al-Rich Metapelites from Transangaria (Yenisey Ridge, East Siberia): Distribution, Composition, and Mining Potential |
| title_full | Alumina Hosts in Fe- and Al-Rich Metapelites from Transangaria (Yenisey Ridge, East Siberia): Distribution, Composition, and Mining Potential |
| title_fullStr | Alumina Hosts in Fe- and Al-Rich Metapelites from Transangaria (Yenisey Ridge, East Siberia): Distribution, Composition, and Mining Potential |
| title_full_unstemmed | Alumina Hosts in Fe- and Al-Rich Metapelites from Transangaria (Yenisey Ridge, East Siberia): Distribution, Composition, and Mining Potential |
| title_short | Alumina Hosts in Fe- and Al-Rich Metapelites from Transangaria (Yenisey Ridge, East Siberia): Distribution, Composition, and Mining Potential |
| title_sort | alumina hosts in fe and al rich metapelites from transangaria yenisey ridge east siberia distribution composition and mining potential |
| topic | andalusite kyanite Fe- and Al-rich metapelites Al<sub>2</sub>SiO<sub>5</sub> concentrates Yenisey Ridge |
| url | https://www.mdpi.com/2075-163X/13/10/1316 |
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