MineArchiveMines with Kaolinization and China Clay Deposits
4 linked mines · Geology: Kaolinization and China Clay Deposits
Listed only where MineArchive's own research gives a reasonable evidential basis for the connection — not every mine where this geology might plausibly apply.
| Mine | Region | Worked | Commodities | Connection |
|---|---|---|---|---|
| Balleswidden Mine | Cornwall | 1507 (earliest record)–1873 or 1875 | Tin, Copper | (well documented example) Much of the ground is soft kaolinised granite; the mine's tips were worked for china clay from 1875. |
| Lee Moor China Clay Works | Devon | from 1820s-30s | China Clay | (well documented example) One of only two British areas where kaolinization of a granite went deep enough to be worth working — the Dartmoor granite here, the Hensbarrow granite in Cornwall. |
| Tregonning Hill China Clay Pits | Cornwall | c. 1746–by 1907 | China Clay | (well documented example) Granite of a detached outcrop of the Cornubian batholith altered by kaolinisation to china clay. |
| Wheal Martyn China Clay Works | Cornwall | 1820s–1931 (pits) | China Clay | (well documented example) The mine's own recorded geology explicitly describes extracting china clay (kaolin) as decomposed granite. |
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