Showing 1–16 of 17 results

Due to the variation of geological causes, there is no absolute standard for the distribution of various purple sand ore in the ore layer. Even for the same type of ore, due to different production areas and ore layers, its position in the mud layer will also be different. For example, purple mud is generally produced in the lower part of black mud, but sometimes it is produced in the lower part of clump mud; green mud is usually produced at the lower part of dragon bone adhesion layer, but sometimes it is produced between other mud layers. Other types of ores also have similar situations. Nowadays, basic classification of ore is generally carried out according to the depth of ore layer when mining.

Purple sand clay can be mainly classified into three categories: purple mud, Benshan green mud and red mud. Each major category of clay can also be further classified into small categories, and different proportions of these types of clay can be mixed and refined to produce pottery raw materials with various colors and textures. The fame of the clay and potter, the artistic nature of the pot, rarity, difficulty in production are often factors that affect the price.