PETROGENESIS AND TECTONIC EVOLUTION OF THE RING COMPLEXES IN SOUTH EASTERN DESERT, EGYPT: A CASE STUDY FROM EL-GEZIRA ALKALINE ASSOCIATION

MINERALOGY, GEOCHEMISTRY AND RADIOACTIVITY OF GRANITIC ROCKS AND ASSOCIATED FLUORITE-QUARTZ VEINS, GABAL ADEDIA, UM BOGMA AREA, SOUTHWESTERN SINAI, EGYPT

Leaching of rare earth elements from phosphate rock using sulfuric acid: Process optimization and kinetic studies