Collectors of all ages have always been interested in rocks and the minerals that make them up. They come in countless shapes, sizes and colors. There are three main types of rocks: sedimentary, ...

Discover how rocks, minerals & the rock cycle change your world. Join the Science Trek team to explore rocks and minerals! Discover how the Earth formed, the three types of rocks, the rock cycle, and ...

Watch an audio-described version of this video here: https://youtu.be/DO3VX7e1R7E Smithsonian geologist Ben Andrews introduces the three types of rocks — igneous ...

This image is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. When we look at a rock, we often just focus on its size and appearance. Is it light or heavy? Dark or ...

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