Ree minerals of phyllites of the main central thrust of the Tamor window area, Eastern Nepal
E.V. Belogub, V.V. Shilovskikh, K.A. Novoselov
UDК 549(3/9), 552.4
A sample of chlorite-muscovite fllite metamorphosed under greenschist facies of metamor-phism below biotite isograde of the Lower Himalayan Sequence from the Main Central Thrust zone of the Tamor tectonic window area (Eastern Nepal) are studied. The REE minerals are alla-nite, monazite and xenotime. The temperature of their formation based on chlorite thermometer and mineral assemblages is below 410 °C. The clayey minerals and biogenic calcium phosphate from primary pelite rocks are suggested to be the source for REEs.
Figures 3. Tables 6. References 31.
Key words: monazite, allanite, metamorphysm, rare earth elements.
МINERALOGY № 3 2018