Ores are deposits in Earth's crust of one or more valuable minerals, including copper, iron, and gold. This title introduces readers to what ores are, how they form, how they are mined, and what they are used for. Complete with up-close images, glossary, and index. This title is written at a Level 3 and is specifically for transitional readers. Aligned to Common Core Standards and correlated to state standards. Dash! is an imprint of Abdo Zoom, a division of ABDO.