Rare-metal enriched peraluminous granite: examples from south Eastern Desert, Egypt

Gabal Hamret Mukbud and Gabal Homr Akarim granites represent promising examples for rare-metal enriched peraluminous granite hosting or acting as source for the uranium, rare-metal (Nb, Ta, Th, Be, Yb) mineralization and rare-earth (La, Ce, Lu, Y) contents in the south Eastern Desert of Egypt. They form two famous plutons crop out at wadi Khasab area. These granites show a strong enrichment in some rare-metal and rare-earth contents (Nb = 75.22, Y = 168.5, Th = 29.70, U = 15.58, Ta = 106.3, Be = 191.80, Yb = 33.01, Lu = 5.19, La = 139, Ce = 55.98 ppm). These granites are classified as peraluminous leucogranites (A/CNK = 1.38–2.01), P-poor (P2O5