Ore Geology includes five chapters that discuss short characterization of ore geology, mineralogy of selected Sn, W, Nb and Ta ore deposits from Rwanda (Africa), volatile composition of fluid inclusions in gold-bearing quartz deposits from Canada, Burkina Faso, Sudan and New Zealand, solid solution thermochemistry of polymetallic hydrothermal ores and geochemistry and mineralogy of small uranium deposit from the Central European Variscides. Chapters present, in great detail, different mineralogical and geochemical methods used in ore geology.