Mineral chemistry as a guide to magmatic evolution of some basement rocks from Nuweibi Area, Central Eastern Desert, Egypt.

Neweibi area hosts Nb and Ta bearing apogranites.  It is surrounded by schists, metaperidotites, serpentinites, metagabbros, G1, G2 granites and post granite dykes.  Tolder granites (G1) are represented by diorites, tonalites and granodiorites.