6. GENETIC CLASSIFICATION OF KAOLIN

6. GENETIC CLASSIFICATION OF KAOLIN

Based on the genesis of kaolin deposits, according to the differences in metallogenic geology, geographic conditions, deposit scale, ore body morphology and occurrence characteristics, ore material composition and other aspects reflected by different metallogenic processes, China's kaolin deposits are divided into three types and six subtypes in the Geological Exploration Code for Kaolin Mines.

1. Weathering type: It can be divided into weathering residual subtype and weathering leaching subtype.

2. Hydrothermal alteration type: It can be divided into hydrothermal alteration subtype and modern hot spring alteration subtype.

3. Sedimentary type: It can also be divided into sedimentary and SEDIMENTARY-WEATHERING subtypes and kaolinite claystone subtypes in coal-bearing strata [2].