👉 Cordierite is a type of mineral that is commonly found in the earth's crust and can be found in many different forms, such as sandstone and shale. It is a greenish-brown or brown-colored mineral that has a slightly bitter taste when it is crushed. The term "cordierite" comes from the Latin word "cordis," which means "sand." Cordierite is named after the type of minerals that make up the sandstone, which are often found in