This book is intended for first year students of geology. The physical properties of minerals are described after a brief introduction presenting the rock cycle, followed by some relevant aspects of crystallography. Rock-forming minerals are then treated systematically, concentrating first on silicates followed by the most important non-silicate minerals. The three main groups of rocks are then considered: igneous (plutonic and volcanic), sedimentary and metamorphic. The text is well illustrated with 16 photographs of minerals and a total of 89 figures.