Mineraller ve özellikleri Fluorit General Fluorite Information Chemical Formula: CaF2 Composition: Molecular Weight = 78.07 gm Calcium 51.33 % Ca 71.83 % CaO Fluorine 48.67 % F 48.67 % F - % F -20.49 % -O=F 2 ______ ______ 100.00 % 100.00 % = TOTAL OXIDE Empirical Formula: CaF2 Environment: Low temperature vein deposits. Name Origin: Named after its composition containing fluorine (Latin, fluere = "to flow"). Synonym: Fluor Spar ICSD 60559 PDF 35-816 Yttrocerite-Y Fluorite Crystallography Cell Dimensions: a = 5.463, Z = 4; V = 163.04 Den(Calc)= 3.18 Crystal System: Isometric - HexoctahedralH-M Symbol (4/m 3 2/m) Space Group: F m3m X Ray Diffraction: By Intensity(I/I o): 1.931(1), 3.153(0.94), 1.647(0.35), Forms: [ 1 0 0] Physical Properties of Fluorite Cleavage: [111] Perfect, [111] Perfect, [111] Perfect Color: White, Yellow, Green, Red, Blue. Density: 3.01 - 3.25, Average = 3.13 Diaphaniety: Transparent to subtranslucent Fracture: Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern. Habits: Crystalline - Coarse - Occurs as well-formed coarse sized crystals., Massive - Granular - Common texture observed in granite and other igneous rock., Disseminated - Occurs in small, d istinct particles dispersed in matrix. Hardness: 4 - Fluorite Luminescence: Fluorescent, Short UV=blue, Long UV=blue. Luster: Vitreous (Glassy) Streak: white Optical Properties of Fluorite Optical Data: Isotropic, n=1.433.