The Machow Mine is the largest sulfur mine in Europe. Workings began in the 15th century. This specimen has terrific architecture, with divergent sprays of lustrous brown feather-like crystals. Associated sulfur at the bottom and in the matrix. Ex Chester Lemansky collection. Locality: Machow Mine, Tarnobrzeg City County, Subcarpathian Voivodeship, Poland Composition: strontium sulfate
