Rocks And Minerals

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The term mineral is used to describe a solid chemical compound with a well-defined chemical composition and specific crystal structure. This solid material occurs naturally in pure form. It is the most common substance on earth and is often formed in rocks. Here are some facts about rocks and minerals. You may be surprised to know that you have been living on the same planet for most of your life! But do you know that there are so many different types of minerals? A rock is a solid, naturally-occurring substance composed of mineral-like substances. The specific type of minerals found in rocks depends on their composition. The most common rock on Earth is basalt, formed when lava cools rapidly. It makes up the Hawaiian Islands and much of the ocean floor. It is also found on Mars, Venus, and the Moon. The hardest natural substance on earth is diamond. Its trace elements of sulfur and carbon give it its color. There are more than 3, 000 minerals found on Earth. So, what are these minerals and what do they look like?