Marcasite, Bell County, Texas
Marcasite, is an Iron Sulfide, but physically and crystallographically distinct from pyrite
Locality: Bell County, Texas
Chemical Formula: FeS2
Crystal System: Orthorhombic, typically tabular crystals
Specimen size: 1.5in x 1.25 in x 1 in
Specimen weight: 25 grams
In the Arthur E. Smith Collection, on display at Wheaton College, Wheaton, Illinois.