The articles in this category are Rocks.
“Kimberlite is often called "Diamond ore" because diamonds are often found within Kimberlite. It...Kimberlite
“Coal is a fossil fuel that is extracted from the ground by coal mining. There are many types of...Coal
“Lapis Lazuli is a blue rock compound that is often mistaken for Azurite. It is a blend of the...Lapis Lazuli
“Ductile is a word that means that a certain rock or object can flow under shear stress. See Also...Ductile