This volume explores the role of minerals in rock formation. Chapters focus on mineral properties, classification, elements, and crystal formation. Young readers will gain an understanding of how the rock cycle works and how minerals are the building blocks of Earth's rocks through level-appropriate text and graphic organizers. Leveled, high-interest text in the interactive eBook version give additional information related to the subjects covered in the print version. These photographs, videos, and graphic organizers broaden the reader's experience of the book.