China Clay

SymbolAl₂Si₂O₅(OH)₄

This is a short overview — for the full history, value over time and notable mines, see China Clay →

A soft white clay (kaolin), formed by the natural decomposition of granite and traditionally worked by blasting it from the rock face with high-pressure water jets before settling, refining and drying. Used mainly in papermaking, as a coating and filler, and in ceramics, paint and rubber.

Mines

MineRegionWorked
Wheal Martyn China Clay Works Cornwall 1820s–1931 (pits); 1969 (pan kiln use ended)