Ferrierite-Na Mineral Data
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 % K2 O
Barium 0.11 % Ba 0.12 % BaO
Sodium 2.70 % Na 3.64 % Na2 O
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 % Al2 O3
Silicon 33.40 % Si 71.46 % SiO2
Hydrogen 1.39 % H 12.44 % H2 O
Oxygen 55.24 % O
______ ______
100.00 % 100.00 % = TOTAL OXIDE
Empirical Formula:
Na3.06 K0.97 Mg0.38 Ca0.05 Sr0.03 Ba0.02 Al5 Si31 O72 �18(H2 O)
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 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 - Prismatic H-M Symbol (2/m) Space Group: P 21 /n
X Ray Diffraction:
By Intensity(I/Io ): 3.537(1), 3.781(0.65), 9.51(0.5),
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:
PEFerrierite-Na = 2.19 barns/electronU=PEFerrierite-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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Ferrierite-Na
(Na,K)2Mg(Si,Al)18O36•9(H2O)
Dana No: 77.01.06.06b Strunz No: 09.GD.50
Locality:
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