Levyne-Ca Mineral Data

General Levyne-Ca Information

Chemical Formula:

(Ca,Na2,K2)Al2Si4O12•6(H2O)

Composition:

Molecular Weight = 1,506.86 gm

Potassium 0.52 % K 0.63 % K₂O

Sodium 0.99 % Na 1.34 % Na₂O

Calcium 7.26 % Ca 10.16 % CaO

Aluminum 11.30 % Al 21.35 % Al₂O₃

Silicon 21.79 % Si 46.61 % SiO₂

Hydrogen 2.23 % H 19.92 % H₂O

Oxygen 55.91 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Ca_2.73Na_0.65K_0.2Al_6.31Si_11.69O₃₆•16.66(H₂O)

Environment:

Alteration of basaltic rocks.

IMA Status:

Valid Species 1997 (Pre-IMA) 1825

Locality:

Dalsnipa, Sandoy, Faroï¿½ Islands. Link to MinDat.org Location Data.

Name Origin:

Named for Armand Levy (1794-1841), French mineralogist and crystallographer, Paris University, France. Ca modifier added by zeolite nomenclature committee.

Name Pronunciation:

Levyne-Ca

Synonym:

Echellite

Levyne

Levynite

Levyne-Ca Image

Images:

Levyne-Ca

Comments: Vesicle in basalt matrix lined with white levyne crystals.
Location: Beech Creek Quarry, Mount Vernon, Grant Co., Oregon, USA. Scale: 32x22x20 mm.
© John Betts - Fine Minerals

Levyne-Ca Crystallography

Axial Ratios:

a:c = 1:1.72544

Cell Dimensions:

a = 13.338, c = 23.014, Z = 3; V = 3,545.72 Den(Calc)= 2.12

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/I_o): 4.1(1), 2.815(0.8), 8.19(0.65),

Physical Properties of Levyne-Ca

Cleavage:

{1011} Perfect

Color:

White, Grayish white, Reddish white, Yellowish white, Gray.

Density:

2.09 - 2.16, Average = 2.12

Diaphaneity:

Transparent to Translucent

Habit:

Fibrous - Crystals made up of fibers.

Habit:

Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)

Hardness:

4-4.5 - Between Fluorite and Apatite

Luster:

Vitreous (Glassy)

Magnetism:

Nonmagnetic

Streak:

white

Optical Properties of Levyne-Ca

Gladstone-Dale:

CI meas= 0 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.002 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2344,KPDmeas= 0.2339,KC= 0.234
Ncalc = 1.49 - 1.51

Optical Data:

Uniaxial (-), e=1.487-1.502, w=1.489-1.51, bire=0.0020-0.0080.

Calculated Properties of Levyne-Ca

Electron Density:

Bulk Density (Electron Density)=2.16 gm/cc
note: Specific Gravity of Levyne-Ca =2.13 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_Levyne-Ca= 2.16 barns/electron
U=PE_Levyne-Ca x r_electron= 4.66 barns/cc.

Radioactivity:

GRapi = 7.60 (Gamma Ray American Petroleum Institute Units)
Concentration of Levyne-Ca per GRapi unit = 13.16 (%)

Estimated Radioactivity from Levyne-Ca - barely detectable

Levyne-Ca Classification

Dana Class:

77.01.02.08 (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.15 09 - SILICATES (Germanates)

09.G - Tektosilicates with Zeolitic H2O

09.GD -Chains of 6-membered rings ï¿½ tabular zeolites

09.GD.15 Levyne-Ca (Ca,Na2,K2)Al2Si4O12•6(H2O) R 3m 3 2/m

09.GD.15 Levyne-Na! (Na2,Ca,K2)Al2Si4O12•6(H2O) R 3m 3 2/m

Other Levyne-Ca Information

References:

NAME( Dana8) PHYS. PROP.(CanMin, v 35, p 1586) OPTIC PROP.(Dana8)

See Also:

Links to other databases for Levyne-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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Print or Cut-and-Paste your Levyne-Ca Specimen Label here :

Levyne-Ca

(Ca,Na2,K2)Al2Si4O12•6(H2O)
Dana No: 77.01.02.08 Strunz No: 09.GD.15
Locality:

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