Sulfides Covellite CuS Crystal System Hexagonal Point Group / Cu2S Bornite Cu5FeS4 Crystal System Tetragonal Point Group / Sb2S3 Orpiment As2S3 Crystal System Monoclinic Point Group / AsS Orpiment As2S3 Crystal System Monoclinic Point Group / Diagram Pyrite FeS2 Crystal System Cubic Point Group / Sb Stibnite Sb2S3 Crystal System Orthorhombic Point Group / Bornite Cu5FeS4 Tetragonal Point Group / MoS2 Molybdenite MoS2 Crystal System Hexagonal Point Group / Crystal System Monocl LoT Hexagonal HiT Point Group / FeAsS Cu Sulfides Crystal System Monoclinic Point Group / m-3 Space Group / /