👉 Kermesite is a chemical element with the symbol K and atomic number 28. It is a silicate mineral that occurs in the Earth's crust, primarily as quartz crystals. Kermesites are composed of two elements, silicon (Si) and magnesium (Mg), bonded together by an intermolecular force known as van der Waals forces. These minerals have been used for thousands of years for a variety of purposes, including construction materials, optical fibers, and in the