Black talc is a general term for black and gray black talc, and organic material is the main reason for its blackening. China's black talc resources are relatively concentrated, and the largest black talc reserves are in Liaoning Province. The mining has been started only in recent years. With large ore reserves, low mining costs and certain price advantages, the demand for black talc is increasing, and it has been exported to the United States, Japan, South Korea, EU, ASEAN and other countries and regions.