E traction silica sand
Silica sand Extraction | Silices Pour Tous . Silica sand Extraction. The Paris area (with million tonnes of production of silica sand) produces 2 / 3 of silica sand in France. The age of these silica sands is either Bartonian or Stampian. 40 Millions years ago, sea invaded the Paris area and deposited sands, first coarse (Auvers silica sand) and then finer (Beauchamp silica sand). Silica