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| flint; gravel; pebble (Kieselstein); silicic; pebble stones; pebbles | |||
| silica silicion dioxide | |||
| pebble stone; stone | |||
| shingle | |||
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| silica; silex | |||
| pebble; pebblestone; pimplestone | |||
| pebble (particle size from 4 to 60 mm) | |||
| rubble | |||
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| siliceous; silicious | |||
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