The third group of stones are the metamorphic rocks formed by the alteration of other rock types by heat and pressure. They show some of the characteristics of both igneous and sedimentary rocks, often having a hard, crystalline structure but retaining traces of original sedimentary bedding surfaces.
What are rocks? Rocks are made of grains that fit together. Each grain in the rock is made from a mineral, which is a chemical compound. The grains in a rock can be different colours, shapes and sizes.
Rocks come in many different colors, shapes, and sizes. Because no two rocks are exactly alike, they are a lot of fun to collect. Your rock collection will be truly unique, so start collecting rocks today! No one else in the world will have a .
This is different rocks, types and color there are so many different types and colors every where in the world and on other planets they are so nice to have around the world they are really helpful. There are different types, color, and shapes. This is about diiferent rock,color, and shape.
Rocks are composed of minerals, which are natural inorganic (nonliving) substances with specific chemical compositions and structures. A rock may consist of many crystals of one mineral or combinations of many minerals. Hundreds of different kinds of minerals make up hundreds of different kinds of rocks.