The raw materials used in purple sand Tokisho, including purple mud, green mud and red mud, are collectively called purple sand mud. Purple mud is an interlayer of nail mud seam. The ore body is thin and lenticular, and the thickness of the ore bed is generally about tens of centimeters to one meter, so the stability is poor. The appearance color of raw materials is purple and purplish red with light green spots, and the appearance color after firing is purple, purplish brown and purplish black.
Material characteristics:
The main component of purple mud is hydromica, which contains different amounts of kaolin, quartz, mica and iron. Comprehensive analysis shows that purple clay belongs to granular soil-timely mica series, and its characteristics are similar to those of porcelain-making raw materials. Therefore, a single raw material has ideal plasticity, high strength and low drying shrinkage, which provides good technological conditions for various shapes.
Refer to the above content: Baidu Encyclopedia-Zisha Pot