The Mineralogical Museum of Caltanissetta is located in the historic city center and is headquartered in the spaces adjacent to public school. The institution was founded in 2012 with the opening of new exhibition spaces. The museum is also known as "Mineral Museum, paleontological and solfara Sebastiano Mottura" for his collection of minerals and fossils. The collection is unique for the variety of exhibits and for the period instruments section used in mining activities. The collection of fossils and minerals amounts to a total of 2500 and 1500 mineral finds from various geological eras. Of rarity are the sulfur samples that are grouped for variety of shapes, transparency, grouping and crystalline structure. The artifacts are evidence of the mining operations of sulfur on the territory. Several panels tell the story of sulfur extraction, along with a rich vintage photo documentation.