Chabazite-Na Mineral Data

[What's New] [Mineral Galleries] [About Us] [Contacts] [Login]
At AA Mineral Specimens, we source quality Mineral Specimens, Fossils, Gemstones,
Decorative Stones, Lapidary Material and Specimen Sets world-wide

General Chabazite-Na Information

Chemical Formula:

(Na2,K2,Ca,Mg)[Al2Si4O12]•6(H2O)

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

Empirical Formula:

Na_3.11Ca_0.19K_1.05Mg_0.02Sr_0.05Al_4.53Fe²⁺_0.01Si_7.4O₂₄·11.47(H₂O)

Environment:

Amygdaloidal cavities of basalt and related rocks.

IMA Status:

Approved IMA 1998 (Dana # Added)

Locality:

Biggest"Faraglione" facing AciTrezza, Sicily, Italy (Passaglia, 1970, #1). Link to MinDat.org Location Data.

Name Origin:

The Na-dominant member of the chabazite series.

Name Pronunciation:

Chabazite-Na + Pronunciation

Synonym:

Herschelite

Chabazite-Na Image

Images:

Click Here for Larger Chabazite-Na Image

Chabazite-Na Herschelite

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

Axial Ratios:

a:c = 1:1.08635

Cell Dimensions:

a = 13.78, c = 14.97, Z = 3; V = 2,461.79 Den(Calc)= 2.12

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/I_o): 5.03(1), 5.56(1), 9.46(1),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Mazzi F , Galli E , Neues Jahrbuch fur Mineralogie, Monatshefte , 1983 (1983) p.461-480, The tetrahedral framework of chabazite, Locality: Richmond, Melbourne, Victoria, Australia, Note: Occupancies invented to match formula and refinement, Sample: C 4a, trigonal refinement

Physical Properties of Chabazite-Na

Cleavage:

{1011} Imperfect

Color:

Colorless, White, Yellowish, Pinkish, Reddish white.

Density:

2.05 - 2.15, Average = 2.09

Diaphaneity:

Translucent to transparent

Fracture:

Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.

Habit:

Druse - Crystal growth in a cavity which results in numerous crystal tipped surfaces.

Habit:

Pseudo Cubic - Crystals show a cubic outline.

Hardness:

4 - Fluorite

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Chabazite-Na

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

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

Electron Density:

Bulk Density (Electron Density)=2.13 gm/cc
note: Specific Gravity of Chabazite-Na =2.10 gm/cc.

Fermion Index:

Fermion Index = 0.0099056302
Boson Index = 0.9900943698

Photoelectric:

PE_Chabazite-Na= 2.19 barns/electron
U=PE_Chabazite-Na x r_electron= 4.65 barns/cc.

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

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

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

References:

NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Heinrich65)

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 - Google Images
6 - Google Scholar
7 - MinDAT
8 - MinMax(Deutsch)
9 - MinMax(English)
10 - Mineralienatlas (Deutsch)
11 - QUT Mineral Atlas
12 - Ruff.Info

Search for Chabazite-Na using:

[ALTAVISTA] [AOL] [All-The-Web] [HotBot] [Ixquick] [MAMMA] [MSN.COM] [Netscape] [Scirus] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Chabazite-Na :

AA Mineral Specimens

B & L Fine Minerals

Crystalarium.com

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

Dakota Matrix

Desert Winds Gems and Minerals

John Betts Fine Minerals

Mason's Minerals

Mineral News

Mineral of the Month Club

Wrights Rock Shop

Translate Chabazite-Na Mineral Data :

Ask about Chabazite-Na here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

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: