We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
REE Mineralization in Alkaline Rhyolites of the Pechalninskii Ore Field (Northeast Russia).
- Authors
Grigorieva, A. V.; Volkov, A.V.; Sidorova, N. V.
- Abstract
For the first time by the method of scanning electron microscopy, REE mineralization studies are conducted in alkaline rhyolites of the Pechalninskii ore field (Northeast Russia), a potentially large-volume source of HREEs. It is shown using the methods of electron microprobe analysis and cathodoluminescence that microcrystalline aggregates of pyroxenes and/or amphiboles in alkaline rhyolites contain the finest inclusions of REE segregations (5–7 µm). Using SEM, it is determined that the largest segregation is cerium phosphate. Concentrically zonal and radial-fibrous REE segregations are revealed in the relics of titanomagnetite crystals by EDS. The first ones are represented by silicates enriched with Y and REEs and the content of each REE varies regularly from the center to the edge. The radial-fibrous aggregates are represented by oxides and/or carbonates containing REEs (La, Ce, and Nd predominate). The results obtained can be used in the development of enrichment technology.
- Subjects
RUSSIA; ELECTRON probe microanalysis; MINERALIZATION; ORES; RARE earth oxides; SCANNING electron microscopy
- Publication
Doklady Earth Sciences, 2024, Vol 516, Issue 2, p1004
- ISSN
1028-334X
- Publication type
Article
- DOI
10.1134/S1028334X24601469