Mineraller ve özellikleri Alabandit Alabandite Mineral Data Pronunciation Guide General Alabandite Information Chemical Formula: MnS Composition: Molecular Weight = 87.00 gm Manganese 63.14 % Mn Sulfur 36.86 % S ______ 100.00 % Empirical Formula: Mn 2+ S Environment: Epithermal sulfide vein deposits. Name Origin: Named after its locality Alabanda, Turkey. Synonym: ICSD 41331 Manganblende PDF 6-518 Alabandite Crystallography Cell Dimensions: a = 5.214, Z = 4; V = 141.75 Den(Calc)= 4.08 Crystal System: Isometric - HexoctahedralH-M Symbol (4/m 3 2/m) Space Group: F m3m X Ray Diffraction: By Intensity(I/I o ): 2.612(1), 1.847(0.5), 1.509(0.2), Physical Properties of Alabandite Cleavage:  Perfect,  Perfect,  Perfect Color: Black, Lead gray, Brownish gray. Density: 3.95 - 4.04, Average = 3.99 Diaphaniety: Opaque Fracture: Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern. Habits: Massive - Granular - Common texture observed in granite and other igneous rock., Disseminated - Occurs in small, distinct particles dispersed in matrix., Granular - Generally occurs a s anhedral to subhedral crystals in matr Hardness: 3.5-4 - Copper Penny-Fluorite Luminescence: None. Luster: Sub Metallic Magnetism: Nonmagnetic Streak: dark green Optical Properties of Alabandite Optical Data: Isotropic, n=2.7.