Faujasite-Ca Mineral Data

General Faujasite-Ca Information

Chemical Formula: (Ca,Na2,Mg)3.5[Al7Si17O48]•32(H2O) Composition: Molecular Weight = 2,127.59 gm    Sodium      1.13 %  Na    1.53 % Na₂O    Calcium     3.96 %  Ca    5.54 % CaO    Magnesium   0.40 %  Mg    0.66 % MgO    Aluminum    8.88 %  Al   16.77 % Al₂O₃    Silicon    22.44 %  Si   48.01 % SiO₂    Hydrogen    3.03 %  H    27.10 % H₂O    Oxygen     60.16 %  O              ______        ______               100.00 %       99.61 % = TOTAL OXIDE Empirical Formula: 3.5(Ca_0.6)3.5(Na_0.3)3.5(Mg_0.1)Al₇Si₁₇O₄₈•32(H₂O) Environment: Usually occurs in basaltic volcanics, metapyroxenite, also with augite in limburgite. IMA Status: Approved IMA 1998 (Dana # Added) Locality: Found in drill core from Haselborn, near Ilbeshausen, Vogelsberg, Hessen, Germany. Link to MinDat.org Location Data. Name Origin: Named after Barthelemy Faujas de Saint Fond (1741-1819), French geologist and writer on the origin of volcanoes. The Ca-dominant member of the faujasite series. Name Pronunciation: Faujasite-Ca + Pronunciation  

Faujasite-Ca Image

Images:

Faujasite-Ca Comments: Isolated colorless octahedra faujasite-Ca in basalt vesicules. Location: Table Mountain, San Bernardino County, California, USA. Scale: See Image. © Rruff Database

Faujasite-Ca Crystallography

Cell Dimensions: a = 24.7, Z = 8; V = 15,069.22 Den(Calc)= 1.88 Crystal System: Isometric - HexoctahedralH-M Symbol (4/m 3 2/m) Space Group: F d3m X Ray Diffraction: By Intensity(I/I_o): 3.76(1), 5.66(1), 14.3(1), Crystal Structure:

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Pluth J J , Smith J V , Materials Research Bulletin , 7 (1972) p.1311-1322, Positions of cations and molecules in zeolites with the faujasite-type, framework VII. Dehydrated Ca-exchanged X, Locality: synthetic, Note: dehydrated under vacuum at 500 C, measured at room temperature

 

Physical Properties of Faujasite-Ca

Cleavage: {111} Perfect, {111} Perfect, {111} Perfect Color: Colorless, White, Pale brown. Density: 1.923 - 1.94, Average = 1.93 Diaphaneity: Transparent to translucent Fracture: Brittle - Uneven - Very brittle fracture producing uneven fragments. Habit: Crystalline - Coarse - Occurs as well-formed coarse sized crystals. Hardness: 5 - Apatite Luster: Vitreous (Glassy) Streak: white  

Optical Properties of Faujasite-Ca

Gladstone-Dale: CI meas= -0.014 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.042 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2527,KPDmeas= 0.2459,KC= 0.2426
Ncalc = 1.46 - 1.47 Optical Data: Isotropic, n=1.47-1.48.  

Calculated Properties of Faujasite-Ca

Electron Density: Bulk Density (Electron Density)=1.98 gm/cc
note: Specific Gravity of Faujasite-Ca =1.93 gm/cc.
Fermion Index: Fermion Index = 0.01
Boson Index = 0.99 Photoelectric: PE_Faujasite-Ca = 1.69 barns/electron
U=PE_Faujasite-Ca x rElectron Density= 3.35 barns/cc.
Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Faujasite-Ca is Not Radioactive  

Faujasite-Ca Classification

Dana Class: 77.01.02.07a (77)Tectosilicate Zeolite group   (77.01)true zeolites   (77.01.02)Chabazite and related species  

77.01.02.01 Chabazite-Ca (Ca0.5,Na,K)4[Al4Si8O24]•12H2O P1 1

 

77.01.02.01a Chabazite-Na! (Na2,K2,Ca,Mg)[Al2Si4O12]•6(H2O) R 3m 3 2/m

 

77.01.02.01b Chabazite-K! (K2,Ca,Na2,Mg)[Al2Si4O12]•6(H2O) R 3m 3 2/m

 

77.01.02.01c Chabazite-Sr! (Sr,Ca,K2,Na2)[Al2Si4O12]•6(H2O) R 3m 3 2/m

 

77.01.02.02 Herschelite? (Na,Ca,K)AlSi2O6•3(H2O) R 3m 3 2/m

 

77.01.02.03 Willhendersonite KCaAl3Si3O12•5(H2O) P1 1

 

77.01.02.04 Offretite (K2,Ca,Mg)2.5Al5Si13O36•15(H2O) P 6m2 6 m2

 

77.01.02.05 Erionite-Na (Na2,K2,Ca)2[Al4Si14O36]•15(H2O) P 6₃/mmc 6/m 2/m 2/m

 

77.01.02.05a Erionite-K! (K2,Ca,Na2)2[Al4Si14O36]•15(H2O) P 6₃/mmc 6/m 2/m 2/m

 

77.01.02.05b Erionite-Ca! (Ca,K2,Na2)2[Al4Si14O36]•15(H2O) P 6₃/mmc 6/m 2/m 2/m

 

77.01.02.06 Gmelinite-Na (Na2,Ca)Al2Si4O12•6(H2O) P 6₃/mmc 6/m 2/m 2/m

 

77.01.02.06a Gmelinite-Ca! (Ca,Na2)Al2Si4O12•6(H2O) P 6₃/mmc 6/m 2/m 2/m

 

77.01.02.06b Gmelinite-K! (K,Na,Ca)6(Al7Si17O48)•22(H2O) P 6₃/mmc 6/m 2/m 2/m

 

77.01.02.07 Faujasite-Na (Na2,Ca,Mg)3.5[Al7Si17O48]•32(H2O) F d3m 4/m 3 2/m

 

77.01.02.07a Faujasite-Ca! (Ca,Na2,Mg)3.5[Al7Si17O48]•32(H2O) F d3m 4/m 3 2/m

 

77.01.02.07b Faujasite-Mg! (Mg,Na2,Ca)3.5[Al7Si17O48]•32(H2O) F d3m 4/m 3 2/m

 

77.01.02.08 Levyne-Ca (Ca,Na2,K2)Al2Si4O12•6(H2O) R 3m 3 2/m

 

77.01.02.08a Levyne-Na! (Na2,Ca,K2)Al2Si4O12•6(H2O) R 3m 3 2/m

 

77.01.02.09 Tschortnerite! Ca4(Ca,Sr,K,Ba)3Cu3(OH)8[Si12Al12O48]•x(H2O),x>=20 F m3m 4/m 3 2/m

Strunz Class: 09.GD.30 09 - SILICATES (Germanates)   09.G - Tektosilicates with Zeolitic H2O   09.GD -Chains of 6-membered rings – tabular zeolites  

09.GD.30 Faujasite-Ca! (Ca,Na2,Mg)3.5[Al7Si17O48]•32(H2O) F d3m 4/m 3 2/m

 

09.GD.30 Faujasite-Mg! (Mg,Na2,Ca)3.5[Al7Si17O48]•32(H2O) F d3m 4/m 3 2/m

 

09.GD.30 Faujasite-Na (Na2,Ca,Mg)3.5[Al7Si17O48]•32(H2O) F d3m 4/m 3 2/m

 

Other Faujasite-Ca Information

References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8) See Also: Links to other databases for Faujasite-Ca :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info
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