Ferrierite-Na Mineral Data

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General Ferrierite-Na Information

Chemical Formula:

(Na,K)2Mg(Si,Al)18O36•9(H2O)

Composition:

Molecular Weight = 2,606.68 gm

Potassium 1.45 % K 1.75 % K₂O

Barium 0.11 % Ba 0.12 % BaO

Sodium 2.70 % Na 3.64 % Na₂O

Strontium 0.10 % Sr 0.12 % SrO

Calcium 0.08 % Ca 0.11 % CaO

Magnesium 0.35 % Mg 0.59 % MgO

Aluminum 5.18 % Al 9.78 % Al₂O₃

Silicon 33.40 % Si 71.46 % SiO₂

Hydrogen 1.39 % H 12.44 % H₂O

Oxygen 55.24 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Na_3.06K_0.97Mg_0.38Ca_0.05Sr_0.03Ba_0.02Al₅Si₃₁O₇₂·18(H₂O)

Environment:

Alteration product of basalts and as a diagenetic material in rhyolitic tuffaceous sediments and in metamorphic rocks.

IMA Status:

Approved IMA 1985 (Dana # Added)

Locality:

Altoona, Washington, U.S.A. Link to MinDat.org Location Data.

Name Origin:

Named for Walter Frederick Ferrier (1865-1950), Canadian geologist and mining engineer. Na-dominant member of the ferrierite series.

Name Pronunciation:

Ferrierite-Na

Synonym:

Ferrierite

Ferrierite-Na Image

Images:

Ferrierite-Na

Comments: Rounded crystalline aggregate of yellow to brown ferrierite.
Location: Monte Lake, British Columbia, Canada. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Ferrierite-Na Crystallography

Axial Ratios:

a:b:c =1.3687:1:0.5304

Cell Dimensions:

a = 19.3, b = 14.1, c = 7.48, Z = 1; beta = 90° V = 2,035.53 Den(Calc)= 2.13

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2₁/n

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

By Intensity(I/I_o): 3.537(1), 3.781(0.65), 9.51(0.5),

Crystal Structure:

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Gramlich-Meier R , Gramlich V , Meier W M , American Mineralogist , 70 (1985) p.619-623, The crystal structure of the monoclinic variety of ferrierite, Locality: Altoona, Washinton, USA

Physical Properties of Ferrierite-Na

Cleavage:

{100} Perfect, {001} Imperfect

Color:

Colorless, White, Pink, Orange, Red.

Density:

2.06 - 2.23, Average = 2.14

Diaphaneity:

Transparent to translucent

Fracture:

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

Habit:

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

Habit:

Tabular - Form dimensions are thin in one direction.

Hardness:

3-3.5 - Calcite-Copper Penny

Luster:

Vitreous - Silky

Streak:

white

Optical Properties of Ferrierite-Na

Gladstone-Dale:

CI meas= -0.007 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.014 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2264,KPDmeas= 0.2249,KC= 0.2232
Ncalc = 1.46 - 1.5

Optical Data:

Biaxial (+/-), a=1.473-1.489, b=1.474-1.489, g=1.477-1.492, bire=0.0030-0.0040

Calculated Properties of Ferrierite-Na

Electron Density:

Bulk Density (Electron Density)=2.16 gm/cc
note: Specific Gravity of Ferrierite-Na =2.15 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_{Ferrierite-Na}= 2.19 barns/electron
U=PE_{Ferrierite-Na} x r_electron= 4.74 barns/cc.

Radioactivity:

GRapi = 21.19 (Gamma Ray American Petroleum Institute Units)
Concentration of Ferrierite-Na per GRapi unit = 4.72 (%)

Estimated Radioactivity from Ferrierite-Na - barely detectable

Ferrierite-Na Classification

Dana Class:

77.01.06.06b (77)Tectosilicate Zeolite group

(77.01)true zeolites

(77.01.06)Mordenite and related species

77.01.06.01 Mordenite (Ca,Na2,K2)Al2Si10O24•7(H2O) C mc2₁ mm2

77.01.06.02 Epistilbite CaAl2Si6O16•5(H2O) C1 1

77.01.06.03 Maricopaite Pb7Ca2(Si,Al)48O100•32(H2O) Cm2m 2/m 2/m 2/m

77.01.06.04 Dachiardite-Ca (Ca,Na2,K2)5Al10Si38O96•25(H2O) C 2/m 2/m

77.01.06.05 Dachiardite-Na (Na2,Ca,K2)4Al4Si20O48•13(H2O) C 2/m 2/m

77.01.06.06 Ferrierite-Mg (Mg,Na,K)2Mg(Si,Al)18O36•9(H2O) Pnnm 2/m 2/m 2/m

77.01.06.06a Ferrierite-K! (K,Na)2Mg(Si,Al)18O36•9(H2O) Pnnm 2/m 2/m 2/m

77.01.06.06b Ferrierite-Na! (Na,K)2Mg(Si,Al)18O36•9(H2O) P 2₁/n 2/m

77.01.06.07 Boggsite NaCa2(Al5Si19O48)•17(H2O) I mma 2/m 2/m 2/m

77.01.06.08 Gottardiite! Na3Mg3Ca5Al19Si117O272•93(H2O) C mca 2/m 2/m 2/m

77.01.06.09 Terranovaite! (Na,Ca)8(Si68Al12)O160•29(H2O) C mcm 2/m 2/m 2/m

77.01.06.10 Mutinaite! Na3Ca4Si85Al11O192•60(H2O) P nma 2/m 2/m 2/m

77.01.06.12 Direnzoite! NaK6MgCa2(Al13Si47O120)•36H2O Pmmn 2/m 2/m 2/m

Strunz Class:

09.GD.50 09 - SILICATES (Germanates)

09.G - Tektosilicates with Zeolitic H2O

09.GD -Chains of 6-membered rings – tabular zeolites

09.GD.50 Ferrierite-K! (K,Na)2Mg(Si,Al)18O36•9(H2O) Pnnm 2/m 2/m 2/m

09.GD.50 Ferrierite-Mg (Mg,Na,K)2Mg(Si,Al)18O36•9(H2O) Pnnm 2/m 2/m 2/m

09.GD.50 Ferrierite-Na! (Na,K)2Mg(Si,Al)18O36•9(H2O) P 2₁/n 2/m

Other Ferrierite-Na Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8)

See Also:

Links to other databases for Ferrierite-Na :
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 Ferrierite-Na Specimen Label here :

Ferrierite-Na

(Na,K)2Mg(Si,Al)18O36•9(H2O)
Dana No: 77.01.06.06b Strunz No: 09.GD.50
Locality:

Notes: