Chabazite-Ca Mineral Data

Chabazite-Ca Mineral Data +

General Chabazite-Ca Information

Chemical Formula:

(Ca0.5,Na,K)4[Al4Si8O24]·12H2O

Composition:

Molecular Weight = 1,039.07 gm

Potassium 0.75 % K 0.91 % K₂O

Sodium 0.07 % Na 0.09 % Na₂O

Strontium 0.25 % Sr 0.30 % SrO

Calcium 7.17 % Ca 10.04 % CaO

Magnesium 0.05 % Mg 0.08 % MgO

Aluminum 10.23 % Al 19.33 % Al₂O₃

Silicon 21.70 % Si 46.43 % SiO₂

Hydrogen 2.55 % H 22.82 % H₂O

Oxygen 57.22 % O

______ ______

100.00 % 99.99 % = TOTAL OXIDE

Empirical Formula:

Ca_1.86Na_0.03K_0.2Mg_0.02Sr_0.03Al_3.94Si_8.03O₂₄·13.16(H₂O)

Environment:

Amygdaloidal cavities of basalt and related rocks. Renamed chabazite-Ca by IMA zeolite committee.

IMA Status:

Valid Species (Pre-IMA) 1792

Locality:

Col de Lares, Val di Fassa, Italy. Link to MinDat.org Location Data.

Name Origin:

From Gk. chabazios, tune or melody, one of twenty stones named in the poem Peri lithos, which extolled the virtues of minerals. The poem is ascribed to Orpheus, legendary founder of the Orphic cult, which flourished in

Synonym:

Acadialite

Adipite

Chabazite

Chabazite-Ca Image

Images:

Chabazite-Ca

Comments: Colorless hexagonal plates of chabazite.
Location: Boral quarry, Bundoora, Victoria, Australia. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Images:

Chabazite-Ca

Comments: Twinned, white, blocky crystals of chabazite on basalt matrix.
Location: Richmond, Melbourne, Victoria, Australia. Scale: 7x6x2 cm.
© John Betts - Fine Minerals

Images:

Chabazite-Ca

Comments: Pinkish orange colored chabazite-Ca displaying a blocky, near-cubic form of triclinic crystals.
Location: Imilchil, Anti-Atlas Morocco. Scale: 4.2 x 3.7 x 1.6 cm.
© Fabre Minerals

Chabazite-Ca Crystallography

Axial Ratios:

a:b:c =1.001:1:0.9957

Cell Dimensions:

a = 9.45, b = 9.44, c = 9.4, Z = 1; alpha = 91.18°, beta = 94.08°, gamma = 94.07° V = 834.14 Den(Calc)= 2.07

Crystal System:

Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 2.925(1), 4.32(0.75), 9.35(0.5),2.89(0.3), 3.87(0.3), 5.02(0.3), 3.59(0.25),

Crystal Structure:

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Mazzi F , Galli E , Neues Jahrbuch fur Mineralogie, Monatshefte , 1983 (1983) p.461-480, The tetrahedral framework of chabazite, Locality: Wasson s Bluff, Two Island, Nova Scotia, Canada, Note: Occupancies invented to match formula and refinement, Sample: C 1a, trigonal refinement

View Additional jPOWD Structure files for Chabazite-Ca
[1] [2]

Physical Properties of Chabazite-Ca

Cleavage:

[1011] Imperfect

Color:

Colorless, Green, Yellow, White, Pink.

Density:

2.05 - 2.15, Average = 2.09

Diaphaniety:

Translucent to transparent

Fracture:

Brittle - Uneven - Very brittle fracture producing uneven fragments.

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-Ca

Gladstone-Dale:

CI meas= 0.031 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.017 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2337,KPDmeas= 0.2304,KC= 0.2378

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-Ca

Electron Density:

r_electron=2.11 gm/cc
note: r_Chabazite-Ca=2.07 gm/cc.

Fermion Index

Fermion Index = 0.01073
Boson Index = 0.98927

Photoelectric:

PE_Chabazite-Ca= 2.39 barns/electron
U=PE_Chabazite-Ca x r_electron= 5.04 barns/cc.

Radioactivity:

GRapi = 11.07 (Gamma Ray American Petroleum Institute Units)

Estimated Radioactivity from Chabazite-Ca - barely detectable

Chabazite-Ca Classification

Dana Class:

77.1.2.1 (77)Tectosilicate Zeolite group

(77.1)true zeolites

(77.1.2)Chabazite and related species

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

77.1.2.1a Chabazite-Na! (Na2,K2,Ca,Mg)[Al2Si4O12]·6(H2O) R 3m 3 2/m

77.1.2.1b Chabazite-K! (K2,Ca,Na2,Mg)[Al2Si4O12]·6(H2O) R 3m 3 2/m

77.1.2.1c Chabazite-Sr! (Sr,Ca,K2,Na2)[Al2Si4O12]·6(H2O) R 3m 3 2/m

77.1.2.2 Herschelite? (Na,Ca,K)AlSi2O6·3(H2O) R 3m 3 2/m

77.1.2.3 Willhendersonite KCaAl3Si3O12·5(H2O) P1 1

77.1.2.4 Offretite (K2,Ca,Mg)2.5Al5Si13O36·15(H2O) P 6m2 6 m2

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

77.1.2.5a Erionite-K! (K2,Ca,Na2)2[Al4Si14O36]·15(H2O) P 6₃/mmc 6/m 2/m 2/m

77.1.2.5b Erionite-Ca! (Ca,K2,Na2)2[Al4Si14O36]·15(H2O) P 6₃/mmc 6/m 2/m 2/m

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

77.1.2.6a Gmelinite-Ca! (Ca,Na2)Al2Si4O12·6(H2O) P 6₃/mmc 6/m 2/m 2/m

77.1.2.6b Gmelinite-K! (K,Na,Ca)6(Al7Si17O48)·22(H2O) P 6₃/mmc 6/m 2/m 2/m

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

77.1.2.7a Faujasite-Ca! (Ca,Na2,Mg)3.5[Al7Si17O48]·32(H2O) F d3m 4/m 3 2/m

77.1.2.7b Faujasite-Mg! (Mg,Na2,Ca)3.5[Al7Si17O48]·32(H2O) F d3m 4/m 3 2/m

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

77.1.2.8a Levyne-Na! (Na2,Ca,K2)Al2Si4O12·6(H2O) R 3m 3 2/m

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

Strunz Class:

VIII/J.26-30 VIII - Silicates

VIII/J - Tectosilicates (network), with zeolite-structure, Bladed Zeolites

VIII/J.26 - Zeolite group, Willhendersonite - Chabazite - Perialite series

VIII/J.26-10 Willhendersonite KCaAl3Si3O12·5(H2O) P1 1

VIII/J.26-20 Chabazite-Na! (Na2,K2,Ca,Mg)[Al2Si4O12]·6(H2O) R 3m 3 2/m

VIII/J.26-25 Chabazite-K! (K2,Ca,Na2,Mg)[Al2Si4O12]·6(H2O) R 3m 3 2/m

VIII/J.26-30 Chabazite-Ca (Ca0.5,Na,K)4[Al4Si8O24]·12H2O P1 1

VIII/J.26-35 Chabazite-Sr! (Sr,Ca,K2,Na2)[Al2Si4O12]·6(H2O) R 3m 3 2/m

VIII/J.26-40 Tschernichite (Ca,Na)(Si6Al2)O16·4-8(H2O) P 4/mmm 4/m 2/m 2/m

VIII/J.26-50 Gmelinite-Na (Na2,Ca)Al2Si4O12·6(H2O) P 6₃/mmc 6/m 2/m 2/m

VIII/J.26-52 Gmelinite-K! (K,Na,Ca)6(Al7Si17O48)·22(H2O) P 6₃/mmc 6/m 2/m 2/m

VIII/J.26-54 Gmelinite-Ca! (Ca,Na2)Al2Si4O12·6(H2O) P 6₃/mmc 6/m 2/m 2/m

VIII/J.26-58 Levyne-Na! (Na2,Ca,K2)Al2Si4O12·6(H2O) R 3m 3 2/m

VIII/J.26-60 Levyne-Ca (Ca,Na2,K2)Al2Si4O12·6(H2O) R 3m 3 2/m

VIII/J.26-70 Offretite (K2,Ca,Mg)2.5Al5Si13O36·15(H2O) P 6m2 6 m2

VIII/J.26-80 Mazzite K2CaMg2(Al,Si)36O72·28(H2O) P 6₃/mmc 6/m 2/m 2/m

VIII/J.26-90 Erionite-Na (Na2,K2,Ca)2[Al4Si14O36]·15(H2O) P 6₃/mmc 6/m 2/m 2/m

VIII/J.26-92 Erionite-K! (K2,Ca,Na2)2[Al4Si14O36]·15(H2O) P 6₃/mmc 6/m 2/m 2/m

VIII/J.26-94 Erionite-Ca! (Ca,K2,Na2)2[Al4Si14O36]·15(H2O) P 6₃/mmc 6/m 2/m 2/m

VIII/J.26-95 Bellbergite (K,Ba,Sr)2Sr2Ca2(Ca,Na)4Al18Si18O72·30(H2O) P 6₃/mmc, P 6₂c-, P 6₃mc Hex

VIII/J.26-100 Perlialite K8Tl4Al12Si24O72·20(H2O) P 6/mmm 6/m 2/m 2/m

Other Chabazite-Ca Information

References:

NAME( Duda&Rejl90) PHYS. PROP.(AntBidBlaNic2) OPTIC PROP.(Heinrich65)

See Also:

Links to other databases for Chabazite-Ca :
1 - Alkali-Nuts(English) 2 - Alkali-Nuts(Francais) 3 -Am. Min. Crystal Structure Database 4 -Athena 5 - Crocoite.com Mineral Locations 6 -Google Images 7 -Google Scholar 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas

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Chabazite-Ca

(Ca0.5,Na,K)4[Al4Si8O24]·12H2O
Dana No: 77.1.2.1 Strunz No: VIII/J.26-30
Locality:

Notes: