This book presents a detailed review of the mineral deposits and occurrences in the Arabian-Nubian Shield (ANS), including their distribution,mineralization styles, economic importance, and geological controls on the mineralization. The purpose of the book is to compile the results of past and recent investigations on mineral deposits and occurrences in the ANSthat covering the countries of (Saudi Arabia, Yemen, Egypt, Sudan, Eritrea, and Ethiopia). In this regard, it discusses in detail the variousgeneticmineralization styles in the ANS including:(1)magmatic mineral deposits associated with mafic-ultramafic rocks (e.g. chromite, Ni-Cu-Co-PGE magmatic sulfides,Fe-Ti-V oxides),(2)intrusion-related(magmatic-hydrothermal)deposits associated with felsic to intermediate rocks (porphyry, epithermal Au-Ag/sulfide vein type family, skarn, granite-related pegmatite-REE deposits),(3) hydrothermalorogenic gold and volcanogenic massive sulfide (VMS) deposits, as well as(4)surficial mineral deposits (chemical-sedimentary, residual, mechanical and supergene enrichment deposits).