New large sulfur deposits were discovered in Poland in 1953, the result of investigations by the Geological Institute of Warsaw. All the deposits occur in a widespread Miocene evaporite unit deposited in the Carpathian foredeep and now occur in Miocene structural uplifts. The gypsum underlying impermeable Sarmatian clays was altered to limestone and native sulfur where penetrated by hydrocarbons and bacteria. The early determination of the genesis of the sulfur deposits and their occurrence in elevated blocks led to an exploration program that has successfully located new deposits.

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