Tadzhikite-(Ce)

General Information: Chemical Formula:Ca3(Ce,Y)2(Ti,Al,Fe+++)B4Si4O22 Composition:(Molecular Weight = 924.84 gm)Calcium 13.00 % CaCerium 22.73 % CeYttrium 4.81 % Y Titanium 3.11 % TiAluminum 0.88 % AlIron 0.60 % FeSilicon 12.15 % SiBoron 4.68 % B Oxygen 38.06 % O  Empirical Formula: Ca3Ce1.5Y0.5Ti0.6Al0.3Fe3+0.1B4Si4O22 IMA Status:Approved IMA 1987Physical Properties: Cleavage:[010] Distinct Color:gray brown or reddish brown. Density:3.73 - 3.86, Average = 3.79 Diaphaniety:Translucent Hardness:6 - Orthoclase Luster:Vitreous (Glassy) Streak:whiteMore details...