Mineraller ve özellikleri Apatit General Apatite Information Chemical Formula: Ca5(PO4)3(OH,F,Cl) Composition: Molecular Weight = 509.12 gm Calcium 39.36 % Ca 55.07 % CaO Phosphorus 18.25 % P 41.82 % P 2 O 5 Hydrogen 0.07 % H 0.59 % H 2 O Chlorine 2.32 % Cl 2.32 % Cl - % Cl -0.52 % -O=Cl 2 Oxygen 38.76 % O Fluorine 1.24 % F 1.24 % F - % F -0.52 % -O=F 2 ______ ______ 100.00 % 100.00 % = TOTAL OXIDE Empirical Formula: Ca5(PO 4) 3(OH)0.3333F 0.3333Cl 0.3333 Name Origin: Named from the Greek apatao - "I am misleading." Synonym: Davisonite-mixture with crandallite Dennisonite-mixture with crandallite Apatite Crystallography Axial Ratios: a:c = 1:0.73454 Cell Dimensions: a = 9.38, c = 6.89, Z = 2; V = 525.00 Den(Calc)= 3.22 Crystal System: Hexagonal - DipyramidalH-M Symbol (6/m) Space Group: P 63/m Forms: [ 0 1 1] [ 0 1 0] [ 0 0 1] Physical Properties of Apatite Cleavage: [0001] Indistinct, [1010] Indistinct Color: White, Yellow, Green, Red, Blue. Density: 3.16 - 3.22, Average = 3.19 Diaphaniety: Transparent to translucent Fracture: Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz). Habits: Colloform - Forming from a gel or colloidal mass., Massive - Granular - Common texture observed in granite and other igneous rock., Earthy - Dull, clay- like texture with no visible cr ystalline affinities, (e.g. howlite). Hardness: 5 - Apatite Luminescence: None. Luster: Vitreous (Glassy) Streak: white Optical Properties of Apatite Optical Data: Uniaxial (-), e=1.63, w=1.633, bire=0.0030.