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This is a short overview. For the background — history, value over time and notable mines — see Diatomite →
A soft, powdery sedimentary rock formed from the fossilised silica shells of diatoms; used historically as an insulator, filter medium, mild abrasive and, crucially, as the absorbent base Alfred Nobel used to stabilise nitroglycerin into dynamite.
| Mine | Region | Worked |
|---|---|---|
| Loch Cuithir Diatomite Works | Highland | 1886/1890–1915 |
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