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Chabazite-Na Mineral Data

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General Chabazite-Na Information

Help on Chemical  Formula: Chemical Formula: (Na2,K2,Ca,Mg)[Al2Si4O12]•6(H2O)
Help on Composition: Composition: Molecular Weight = 1,046.27 gm
   Potassium   3.92 %  K     4.73 % K2O
   Sodium      6.83 %  Na    9.21 % Na2O
   Strontium   0.42 %  Sr    0.50 % SrO
   Calcium     0.73 %  Ca    1.02 % CaO
   Magnesium   0.05 %  Mg    0.08 % MgO
   Aluminum   11.68 %  Al   22.07 % Al2O3
   Iron        0.05 %  Fe    0.07 % FeO
   Silicon    19.86 %  Si   42.50 % SiO2
   Hydrogen    2.21 %  H    19.75 % H2O
   Oxygen     54.24 %  O
             ______        ______ 
             100.00 %       99.92 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na3.11Ca0.19K1.05Mg0.02Sr0.05Al4.53Fe2+0.01Si7.4O24�11.47(H2O)
Help on Environment: Environment: Amygdaloidal cavities of basalt and related rocks.
Help on IMA Status: IMA Status: Approved IMA 1998 (Dana # Added)
Help on Locality: Locality: Biggest"Faraglione" facing AciTrezza, Sicily, Italy (Passaglia, 1970, #1). Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: The Na-dominant member of the chabazite series.
Help on Name Pronunciation: Name Pronunciation: Chabazite-Na + Pronunciation Say CHABAZITE-NA
Help on Synonym: Synonym: Herschelite
 

Chabazite-Na Image

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  Herschelite   Chabazite-Na

Comments: Rounded transparent crystals of chabazite-Na (herschelite).
Location: Horseshoe Dam, Maricopa County, Arizona, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Chabazite-Na Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:1.08635
Help on Cell Dimensions: Cell Dimensions: a = 13.78, c = 14.97, Z = 3; V = 2,461.79 Den(Calc)= 2.12
Help on Crystal System: Crystal System: Trigonal - Hexagonal Scalenohedral H-M Symbol (3 2/m) Space Group: R 3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 5.03(1), 5.56(1), 9.46(1),
 

Physical Properties of Chabazite-Na

Help on Cleavage: Cleavage: {1011} Imperfect
Help on Color: Color: Colorless, White, Yellowish, Pinkish, Reddish white.
Help on Density: Density: 2.05 - 2.15, Average = 2.09
Help on Diaphaneity: Diaphaneity: Translucent to transparent
Help on Fracture: Fracture: Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.
Help on Habit: Habit: Druse - Crystal growth in a cavity which results in numerous crystal tipped surfaces.
Help on Habit: Habit: Pseudo Cubic - Crystals show a cubic outline.
Help on Hardness: Hardness: 4 - Fluorite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Chabazite-Na

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.003 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.013 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2282,KPDmeas= 0.2304,KC= 0.2311
Ncalc = 1.47 - 1.5
Help on Optical Data: Optical Data: Biaxial (+/-), a=1.478-1.485, b=1.48-1.4895, g=1.48-1.49, bire=0.0020-0.0050, 2V(Calc)=0-36, 2V(Meas)=0-32. Dispersion none.
 

Calculated Properties of Chabazite-Na

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.13 gm/cc
note: Specific Gravity of Chabazite-Na =2.10 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0099056302
Boson Index = 0.9900943698
Help on Photoelectric: Photoelectric: PEChabazite-Na = 2.19 barns/electron
U=PEChabazite-Na x relectron= 4.65 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 57.31 (Gamma Ray American Petroleum Institute Units)
Concentration of Chabazite-Na per GRapi unit = 1.74 (%)

Estimated Radioactivity from Chabazite-Na - barely detectable

 

Chabazite-Na Classification

Help on  Dana Class: Dana Class: 77.01.02.01a (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
Help on  Strunz Class: Strunz Class: 09.GD.10 09 - SILICATES (Germanates)
  09.G - Tektosilicates with Zeolitic H2O
  09.GD -Chains of 6-membered rings � tabular zeolites
 
09.GD.10 Chabazite-K! (K2,Ca,Na2,Mg)[Al2Si4O12]•6(H2O) R 3m 3 2/m
 
09.GD.10 Chabazite-Ca (Ca0.5,Na,K)4[Al4Si8O24]•12H2O P1 1
 
09.GD.10 Chabazite-Na! (Na2,K2,Ca,Mg)[Al2Si4O12]•6(H2O) R 3m 3 2/m
 
09.GD.10 Herschelite? (Na,Ca,K)AlSi2O6•3(H2O) R 3m 3 2/m
 
09.GD.10 Chabazite-Sr! (Sr,Ca,K2,Na2)[Al2Si4O12]•6(H2O) R 3m 3 2/m
 
09.GD.10 Willhendersonite KCaAl3Si3O12•5(H2O) P1 1
 

Other Chabazite-Na Information

Help on References: References: NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Heinrich65)
Help on See Also: See Also: Links to other databases for Chabazite-Na :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Athena
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info

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Print or Cut-and-Paste your Chabazite-Na Specimen Label here :

Chabazite-Na

(Na2,K2,Ca,Mg)[Al2Si4O12]•6(H2O)
Dana No: 77.01.02.01a Strunz No: 09.GD.10
Locality:

 

Notes:

 

 
   
 


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