Chabazite-K Mineral Data

Chabazite-K Mineral Data
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General Chabazite-K Information

Help on Chemical Formula: Chemical Formula: (K2,Ca,Na2,Mg)[Al2Si4O12]•6(H2O)
Help on Composition: Composition: Molecular Weight = 504.66 gm
   Potassium   4.65 %  K     5.60 % K2O
   Sodium      0.46 %  Na    0.61 % Na2O
   Calcium     2.38 %  Ca    3.33 % CaO
   Magnesium   0.10 %  Mg    0.16 % MgO
   Aluminum   10.69 %  Al   20.20 % Al2O3
   Silicon    22.26 %  Si   47.62 % SiO2
   Hydrogen    2.40 %  H    21.42 % H2O
   Oxygen     57.07 %  O
             ______        ______ 
             100.00 %       98.95 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: K0.6Ca0.3Na0.1Mg0.02Al2Si4O12•6(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: Tufo Ercolano, Ercolano, Naples, Italy (De Gennaro and Franco, Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: From Gk. chabazios, tune or melody, one of twenty stones named in the poem Peri lithos. The K-dominant member of the chabazite series.
Help on Name Pronunciation: Name Pronunciation: Chabazite-K + Pronunciation Say CHABAZITE-K
 

Chabazite-K Image

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Chabazite-K

Comments: Minute colorless crystals of chabazite-K on matrix.
Location: Tyul'bnyunuai River Valley, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia. Scale: Picture Size 0.6 mm.
© Jeff Weissman / Photographic Guide to Mineral Species

Chabazite-K 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 = 6; V = 2,461.79 Den(Calc)= 2.04
Help on Crystal System: Crystal System: Trigonal - Hexagonal ScalenohedralH-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),
Click Here for Large Chabazite-K Structure Window Crystal Structure:

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Gualtieri A F , Passaglia E , European Journal of Mineralogy , 18 (2006) p.351-359, Rietveld structure refinement of NH4-exchanged natural chabazite, Locality: Wasson s Bluff, Two Islands, Nova Scotia, Canada

 

Physical Properties of Chabazite-K

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-K

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.012 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.017 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2371,KPDmeas= 0.2304,KC= 0.2332
Ncalc = 1.48 - 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-K

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.14 gm/cc
note: Specific Gravity of Chabazite-K =2.10 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEChabazite-K = 1.97 barns/electron
U=PEChabazite-K x relectron= 4.22 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 68.22 (Gamma Ray American Petroleum Institute Units)
Concentration of Chabazite-K per GRapi unit = 1.47 (%)

Estimated Radioactivity from Chabazite-K - barely detectable

 

Chabazite-K Classification
Help on Dana Class: Dana Class: 77.01.02.01b (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-K Information
Help on References: References: NAME( CanMin, v 35, p 1579) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Heinrich65)
Help on See Also: See Also: Links to other databases for Chabazite-K :
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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Print or Cut-and-Paste your Chabazite-K Specimen Label here :

Chabazite-K

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

 

Notes: