Minerals and Rocks Table of Contents Properties of Minerals Classifying Rocks Igneous Rocks Sedimentary Rocks Metamorphic Rocks The Rock Cycle Properties of Minerals Are They or Aren’t They? To be classified as a mineral, a substance must satisfy five requirements. Properties of Minerals Complete the graphic organizer to show how a geode forms in four steps. Properties of Minerals Where Minerals Form Minerals can form by crystallization of magma and lava or by crystallization of materials dissolved in water. Properties of Minerals Earth’s Mineral Resources Classifying Rocks Rock Origins Rocks are classified by the way they formed. Igneous Rocks Igneous Rock Origins and Textures The texture of igneous rock varies according to its origin. Igneous Rocks Mineral Composition of Diorite Diorite is a coarse-grained intrusive igneous rock. It is a mixture of feldspar and dark-colored minerals such as hornblende and mica. Sedimentary Rocks How Sedimentary Rock Forms Sedimentary rocks form through a series of processes over millions of years. Sedimentary Rocks Put the terms listed in the word bank in the proper sequence to show how mountains can change into sedimentary rock. Sedimentary Rocks Organic Rocks How do coal and limestone form? Metamorphic Rocks Metamorphic Rock Great heat and pressure can change one type of rock into another. Are these types of rock sedimentary, igneous, or metamorphic? Which rock can form from the other rock? Why do Rocks Change? What causes the changes in the rocks? The Rock Cycle The Rock Cycle Through melting, weathering and erosion, and heat and pressure, the rock cycle constantly changes rocks from one type into another type. So . . . The forces IN the earth causing the changes are caused by… And, the forces on the SURFACE of the Earth causing changes are . . . The Rock Cycle The Rock Cycle and Plate Tectonics New rock forms on the ocean floor at the mid-Atlantic ridge. Here, two plates move apart.