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 Al2O3 (20 wt%) and Fe2O3 (7.91 wt%), moderate K2O (3.44 wt%), and low CaO (0.74 wt%). Their...

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Bibliographic Details
Published in:Minerals (Basel) 2023-10, Vol.13 (10), p.1316
Main Authors: Sokol, Ella V., Kokh, Svetlana N., Nekipelova, Anna V., Likhanov, Igor I., Deviatiiarova, Anna S., Khvorov, Pavel V.
Format: Article
Language:English
Subjects:
Al2SiO5 concentrates
Alumina
Aluminous refractories
Aluminum compounds
Aluminum oxide
Aluminum silicates
Andalusite
Biotite
Calcium oxide
Chlorite
Composition
Concentrates (ores)
Fault lines
Fe- and Al-rich metapelites
Ferric oxide
Garnet
Gold
Hematite
Iron
Kyanite
Magnetic separation
Metamorphic rocks
Metamorphism
Metamorphism (Geology)
Mica
Mineral assemblages
Mineral industry
Mineralization
Minerals
Mines and mineral resources
Mining industry
Muscovite
Ores
Oxides
Phosphates
Plagioclase
Quartz
Raw materials
Rocks
Rocks, Metamorphic
Silica
Silicon dioxide
Titanium dioxide
Yenisey Ridge
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Description
Summary: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 Al2O3 (20 wt%) and Fe2O3 (7.91 wt%), moderate K2O (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. Al2SiO5 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 Al2SiO5 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% Al2O3,
ISSN:2075-163X
2075-163X
DOI:10.3390/min13101316