Brown County
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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.