* Chemical Change: The feldspar undergoes a chemical transformation. Water molecules interact with the feldspar's chemical structure, breaking down the mineral's components and forming new compounds that make up the clay minerals. This change in composition is a key characteristic of chemical reactions.
* New Substances: The clay minerals are different from the original feldspar. Their chemical structure and properties are significantly altered.
* Weathering Process: This process is primarily driven by chemical weathering, where water and dissolved chemicals react with the feldspar, breaking it down.
While mechanical forces like grinding or erosion might help expose feldspar to water and increase the surface area, they are not the primary drivers of the transformation. The chemical reactions are essential for forming the clay minerals.
