Celestite (Celestine) fibrous variety, Brown County, Texas
Celestite (or Celestine) a Strontium Sulfate
Locality: Brown County, Texas
Chemical Formula: SrSO4
Crystal System: Orthorhombic
Specimen size: 3.5 in x 2.5 in x 2 in
Specimen weight: 440 grams
In the Arthur E. Smith Collection, Wheaton College, Wheaton, Illinois.
Named for its delicate blue color, Celestite is the primary source for strontium, which is used in metal alloys and fireworks.