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| Symbol | Al₂Si₂O₅(OH)₄ |
|---|
This is a short overview. For the background — history, value over time and notable mines — see China Clay →
Occurs in: Kaolinization and China Clay Deposits →
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.
| Mine | Region | Worked |
|---|---|---|
| Carclaze Pit | Cornwall | From 1851–Around 2002 |
| Castlecaldwell Feldspar Mine | County Fermanagh | 1853–1940s (last feldspar working) |
| Goonvean Pit | Cornwall | from By 1932 |
| Headon Quarry | Devon | c. 1860–Still active |
| Lee Moor China Clay Works | Devon | from 1820s-30s |
| Tregonning Hill China Clay Pits | Cornwall | c. 1746–By 1907 |
| Wheal Grey Mine | Cornwall | By 1715–1873 |
| Wheal Martyn China Clay Works | Cornwall | 1820s–1931 (pits) |
| Wheal Remfry | Cornwall | from By 1960s |
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