Celestine with Sulfur

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