| GMD | Text |
| Classification | 552 ZOE |
| Publisher | Washington, D.C., National Geographic, 2012 |
| Subject | Rocks.Rocks -- Juvenile literature.Minerals -- Juvenile literature. |
| Series | National Geographic kidsNational Geographic readers.#Level 2. |
| Description | 32 p. ; col. ill. ; 23 cm. |
| ISBN | 9781426310386 |