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Natrolemoynite Mineral Data

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General Natrolemoynite Information

Help on Chemical  Formula: Chemical Formula: Na4Zr2Si10O26•9(H2O)
Help on Composition: Composition: Molecular Weight = 1,128.53 gm
   Potassium   1.04 %  K     1.25 % K2O
   Sodium      5.50 %  Na    7.41 % Na2O
   Calcium     0.36 %  Ca    0.50 % CaO
   Zirconium  16.17 %  Zr   21.84 % ZrO2
   Niobium     0.82 %  Nb    1.18 % Nb2O5
   Silicon    24.89 %  Si   53.24 % SiO2
   Hydrogen    1.61 %  H    14.37 % H2O
   Oxygen     49.62 %  O
             ______        ______ 
             100.00 %       99.79 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na2.7K0.3Ca0.1Zr2Nb0.1Si10O26•9(H2O)
Help on Environment: Environment: Unaltered pegmatites that cut nepheline syenites.
Help on IMA Status: IMA Status: Approved IMA 1996 (Dana # Added)
Help on Locality: Locality: Poudrette quarry, Mont Saint-Hilaire, Quebec, Canada. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: The name alludes to the Na dominance and polymorphic relationship to lemoynite.
Help on Synonym: Synonym: IMA1996-063

Natrolemoynite Image

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Comments: Radiating spray of tan natrolemoynite crystals, with brown coating, with white albite.
Location: Mont Saint Hilaire, Quebec, Canada. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Natrolemoynite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.6469:1:0.56
Help on Cell Dimensions: Cell Dimensions: a = 10.515, b = 16.2534, c = 9.1029, Z = 2; beta = 105° V = 1,502.72 Den(Calc)= 2.49
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 8.135(1)(020), 5.975(0.4)(021), 3.564(0.4)(221),3.49(0.35)(222), 3.974(0.35)(201),

Physical Properties of Natrolemoynite

Help on Cleavage: Cleavage: {100} Perfect, {010} Perfect, {001} Poor
Help on Color: Color: Colorless, White.
Help on Density: Density: 2.47
Help on Diaphaneity: Diaphaneity: Transparent to translucent
Help on Fracture: Fracture: Brittle - Uneven - Very brittle fracture producing uneven fragments.
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Habit: Habit: Bladed - Aggregates of thin lath-like crystals (e.g. kyanite).
Help on Habit: Habit: Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)
Help on Hardness: Hardness: 3 - Calcite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Natrolemoynite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.011 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.019 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2221,KPDmeas= 0.2239,KC= 0.2264
Ncalc = 1.56
Help on Optical Data: Optical Data: Biaxial (-), a=1.533, b=1.559, g=1.567, bire=0.0340, 2V(Calc)=56, 2V(Meas)=63. Dispersion weak.

Calculated Properties of Natrolemoynite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.45 gm/cc
note: Specific Gravity of Natrolemoynite =2.47 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.03
Boson Index = 0.97
Help on Photoelectric: Photoelectric: PENatrolemoynite = 23.38 barns/electron
U=PENatrolemoynite x relectron= 57.25 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 14.87 (Gamma Ray American Petroleum Institute Units)
Concentration of Natrolemoynite per GRapi unit = 6.72 (%)

Estimated Radioactivity from Natrolemoynite - barely detectable


Natrolemoynite Classification

Help on  Dana Class: Dana Class: (74)Phyllosilicate Modulated Layers
  (74.03)with joined strips
  (74.03.03)Altisite/lemoynite Altisite Na3K6Ti2Al2Si8O26Cl3 C 2/m 2/m Lemoynite (Na,K)2CaZr2Si10O26•5-6(H2O) C 2/m 2/m Natrolemoynite! Na4Zr2Si10O26•9(H2O) C 2/m 2/m
Help on  Strunz Class: Strunz Class: 09.DP.35 09 - SILICATES (Germanates)
  09.D - Inosilicates* Structural terminology according to Liebau (1985)
  09.DP -Transitional ino-phyllosilicate structures
09.DP.35 Natrolemoynite! Na4Zr2Si10O26•9(H2O) C 2/m 2/m
09.DP.35 Lemoynite (Na,K)2CaZr2Si10O26•5-6(H2O) C 2/m 2/m

Other Natrolemoynite Information

Help on References: References: NAME( AmMin, vol 87, p 997) PHYS. PROP.(AmMin, vol 87, p 997) OPTIC PROP.(AmMin, vol 87, p 997)
Help on See Also: See Also: Links to other databases for Natrolemoynite :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Athena
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info

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Dana No: Strunz No: 09.DP.35





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