2.5" Tabular, Blue Barite Crystal Cluster - Spain
This is a beautiful specimen of tabular, blue barite crystals from the San Simon Mine in Spain.
Barite, commonly spelled baryte, is well-known for its great range of colors and varied crystal forms and habits. It is a heavy mineral consisting of barium sulfate, and typically has the chemical formula of BaSO4. The barite group consists of baryte, celestine, anglesite and anhydrite. It's generally white to colorless and is the main source of barium.