Also learn which species of cetaceans are endangered. From the National Marine Fisheries Service. Includes pictures and an activity book for kids. If so, you are a rock hound, a person who collects and studies rocks and minerals. Since the beginning of time rocks and minerals have been used as a way to study the earth's history and as tools or jewelry.
Geologists are scientists who study rocks to learn more about our Earth.
Includes information on glaciologists, paleontologists, vulcanologists, and other scientists. The Mineral Gallery has over 450 pictures. The Gemstone gallery has over 150 photographs.