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  1. Kühlungsborn, Rostock, Mecklenburg-West Pomerania, Germany : Mineralizations in chert.

  2. Lübtheen, Ludwigslust-Parchim, Mecklenburg-West Pomerania, Germany : Gypsum quarry in the early 19th century, underground halite and sylvite mine from 1905 to 1916.

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