Earth's crust and mantle made out of rock Rocks are composed of minerals (and in pieces of other rock) Rock's appearance function of mineralogy (abundance and types of minerals) and texture (size and arrangement of minerals or grains) Mineralogy and texture yield information about rock's history (e.g., conditions of formation) Three major types of rock: Igneous Sedimentary Metamorphic Igneous Rock Form by crystallization 
(Earth's crust and mantle; made; out of rock Rocks)
Earth's crust and mantle
made
out of rock Rocks