The most common use of quartzite is for dimensional stones in the construction industry. While construction also uses quartzite as crushed stone, this use accounts for less than 6 percent of the common uses for this type of material in the United States.
Quartzite breaks to form flat surfaces, making it useful as a dimensional material for building facades, roofing and stairs. It provides interesting textures and high durability. While the demand for quartzite is less than other types of dimensional stone, demand for the stone still exceeds its production. The use of quartzite as crushed stone is generally limited to areas where it is more readily available than other types of material.
Quartzite forms through the metamorphosis of quartz sandstone. Its formation requires high pressure and heat. The resulting stone is hard and dense, making it resistant to weathering. Since the stone breaks down slowly, deposits are often located near the surface. However, it is difficult to mine, so planners often call for easier-to-obtain substitutes. Natural substitutes include granite, sandstone or marble. Man made materials, ranging from brick to resin-agglomerated stone and plastics, are other substitutes for quartzite. In road construction, easier-to-obtain limestone accounts for 70 percent of the crushed stone builders use.