Minerals made up of calcium, potassium, or sodium, felspars form rock and account for more than half of the earth's core. Most of the minerals it contains are found in igneous, sedimentary, and metamorphic rocks found worldwide. Feldspar is such an essential component of these rocks. Natural feldspars commonly have opaque shades. There are many applications of this mineral, from ceramic tiles, glass, ceramics, filler to welding electrodes. Feldspar powder is offered to clients in several packaging options, such as loose bulk, bags and bulk bags. It is available in 200, 250, 300 mesh sizes.