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| | Flint - LearnThis.Info Enclyclopedia (Site not responding. Last check: 2007-11-03) |
 | | Flint (or flintstone) is a hard, sedimentary cryptocrystalline silica rock with a glassy appearance. |
 | | Flint is usually dark grey, blue, fl, or deep brown in colour. |
 | | In Europe, some of the best flint has come from Belgium (Obourg, flint mines of Spiennes), the coastal chalks of the English Channel, the Paris Basin, the Sennonian deposits of Rügen and the Jurassic deposits of the Kraków-area in Poland. |
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