PDF Marcasite FeS2 Handbook of Mineralogy
Marcasite FeS2 c 2022 2022 Mineral Data Publishing version 1 Crystal Data Orthorhombic Point Group 2/m 2/m 2/m Crystals typically tabular on {010} also pyramidal prismatic and rarely capillary curved faces common Stalactitic reniform fine granular massive cockscomb and spearhead shapes due to twinning on {101}