Generally contains 25% kaolin, 45% quartz, and 30% feldspar, firing at lower temperatures.
Typically 50% kaolin, 25% quartz, and 25% feldspar. Porcelain
Higher feldspar content (70–85%) mixed with quartz and a small amount of kaolin for aesthetic translucency. Generally contains 25% kaolin, 45% quartz, and 30%