Britholite-(Ce) from the metaluminous granite of SW Egypt

• Autorzy: Hassan Kamaleldin M.

Identyfikatory

DOI

10.2478/mipo-2023-0002

• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

Britholite-(Ce); metaluminous granite; radioactivity; Egypt

• Wydawca: Mineralogical Society of Poland
• Czasopismo: Mineralogia
• Rocznik: 2023
• Tom: Vol. 54, iss. 1
• Strony: 11--17
• Opis fizyczny: Bibliogr. 25 poz., rys., tab., wykr.

Twórcy

autor

Hassan Kamaleldin M.

• Nuclear Materials Authority, El Katameya, New Cairo 3, Cairo Governorate 4710030, Egypt

Bibliografia

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