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General Information: Chemical Formula:(Ba,Ca,K2)Al2Si6O16·6(H2O) Composition:(Molecular Weight = 688.80 gm)Potassium 1.14 % K Barium 11.96 % BaCalcium 1.75 % CaAluminum 7.83 % AlSilicon 24.46 % SiHydrogen 1.76 % H Oxygen 51.10 % O  Empirical Formula: Ba0.6Ca0.3K0.2Al2Si6O16·6(H2O) IMA Status:Discredited IMAPhysical Properties: Cleavage:[010] Good, [100] Good Color:colorless or white. Density:2.248 Diaphaniety:Transparent to Translucent Hardness:4-4.5 - Between Fluorite and Apatite Luster:Vitreous (Glassy) Streak:whiteMore details...

General Information: Chemical Formula:(K,Na,Ca)1-2(Si,Al)8O16·6(H2O) Composition:(Molecular Weight = 664.63 gm)Potassium 5.88 % K Calcium 6.03 % CaAluminum 12.18 % AlSilicon 21.13 % SiHydrogen 1.82 % H Oxygen 52.96 % O  Empirical Formula: KCaAl3Si5O16·6(H2O) Environment:Common zeolite in volcanic rocks, ore veins, diagenetically altered rhyolitic vitric tuffs, saline lake deposites, and ocean floor sediments. Locality:Capo di Bove, south of Rome, Italy. Name Origin:Named after William Phillips (1775-1829), English mineralogist and founder of the Geologial Society of London.Physical Properties: Cleavage:[010] Distinct, [001] Indistinct Color:white, reddish white, light yellow, or pink. Density:2.2 Diaphaniety:Translucent to opaque Habits:Twinning Common - Crystals are usually twinned., Pseudo Tetragonal - Crystals show a tetragonal shape., Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline). Hardness:4-5 - Fluorite-Apatite Luminescence:None. Luster:Vitreous (Glassy) Streak:whiteMore details...

General Information: Chemical Formula:Ca3(AsO4)·11(H2O) Composition:(Molecular Weight = 596.24 gm)Calcium 20.17 % CaArsenic 25.13 % AsHydrogen 3.72 % H Oxygen 50.98 % O  Empirical Formula: Ca3(AsO4)2·11(H2O) IMA Status:Approved IMA 1980Physical Properties: Color:colorless. Density:2.28 Diaphaniety:Transparent Luster:Vitreous (Glassy) Streak:whiteMore details...

General Information: Chemical Formula:Ca3(AsO4)·11(H2O) Composition:(Molecular Weight = 596.24 gm)Calcium 20.17 % CaArsenic 25.13 % AsHydrogen 3.72 % H Oxygen 50.98 % O  Empirical Formula: Ca3(AsO4)2·11(H2O) IMA Status:Approved IMA 1980Physical Properties: Color:colorless. Density:2.28 Diaphaniety:Transparent Luster:Vitreous (Glassy) Streak:whiteMore details...

General Information: Chemical Formula:Ca3(AsO4)·11(H2O) Composition:(Molecular Weight = 596.24 gm)Calcium 20.17 % CaArsenic 25.13 % AsHydrogen 3.72 % H Oxygen 50.98 % O  Empirical Formula: Ca3(AsO4)2·11(H2O) IMA Status:Approved IMA 1980Physical Properties: Color:colorless. Density:2.28 Diaphaniety:Transparent Luster:Vitreous (Glassy) Streak:whiteMore details...

(Ba,Ca,K2)Al2Si6O16 6(H2O)