Why Is My Rock Magnetic? 8 Common Magnetic Rocks and Minerals
When you bring a magnet close to a rock and notice that it is strongly attracted, the result can be surprising. If the rock...
Gold or Pyrite? 7 Simple Tests to Tell the Difference
When you notice bright, yellow, metallic-looking particles inside a rock, it is natural to wonder whether you have found gold. This is especially common...
How to Identify a Meteorite: 7 Tests You Can Do at...
You find an unusually heavy, dark-colored rock in your backyard, in a field, or while hiking. The moment you pick it up, one question...