Hematite is an iron oxide having the formula Fe2O3. It is one of the most abundant minerals on Earth and is mined as an ore of iron. It is also used as a pigment, a minor gemstone, and for several other purposes. Earlier it was mined at locations all around the world, but now its…
Chemical weathering pertains to the changes in rock structure under the action or influence of chemical reactions. There are hundreds of natural chemical processes and reactions within the rocks the change the composition and the structure of the rocks over time. Temperature and, especially, moisture are critical for chemical weathering. Chemical weathering, therefore, occurs more quickly in…