- Tytuł:
- Britholite-(Ce) from the metaluminous granite of SW Egypt
- Autorzy:
- Hassan, Kamaleldin M.
- Powiązania:
- https://bibliotekanauki.pl/articles/2202391.pdf
- Data publikacji:
- 2023
- Wydawca:
- Polskie Towarzystwo Mineralogiczne
- Tematy:
-
Britholite-(Ce)
metaluminous granite
radioactivity
Egypt - Opis:
- Optical microscopy and scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDS) analyses were used to characterize britholite-(Ce) of the metaluminous granite (Proterozoic) intruded into the Nubian Formation in southwestern Egypt and having a relatively high content of radioactive elements (potassium = 4.4 wt%, thorium = 52 ppm, uranium = 10 ppm). The britholite-(Ce) studied here incorporates light rare earth elements (LREE) including lanthanum, cerium, praseodymium, and neodymium as well as thorium. The mineral forms as tabular crystals in a fine-grained quartz-K-feldspar-plagioclase matrix, coexisting with other accessory minerals including biotite, zircon, clinochlore, titanite, and magnetite. Primary britholite-(Ce) usually includes titanite, zircon, and magnetite and is occasionally included in biotite. The inclusion of britholite-(Ce) in biotite suggests that the two minerals crystallized approximately coevally. Petrographical and SEM-EDS data indicate breakdown of the primary magmatic britholite-(Ce) in the samples. This study constitutes the first report for a sole presence of britholite-(Ce) as LREE phase in metaluminous granite samples from Egypt.
- Źródło:
-
Mineralogia; 2023, 54, 1; 11--17
1899-8291
1899-8526 - Pojawia się w:
- Mineralogia
- Dostawca treści:
- Biblioteka Nauki
Artykuł