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Natronambulite Mineral Data

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General Natronambulite Information

Help on Chemical  Formula: Chemical Formula: (Na,Li)Mn++4[Si5O14(OH)]
Help on Composition: Composition: Molecular Weight = 619.35 gm
   Sodium      2.60 %  Na    3.50 % Na2O
   Lithium     0.34 %  Li    0.72 % Li2O
   Manganese  35.48 %  Mn   45.81 % MnO
   Silicon    22.67 %  Si   48.51 % SiO2
   Hydrogen    0.16 %  H     1.45 % H2O
   Oxygen     38.75 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Li0.3Na0.7Mn2+4Si5O14(OH)
Help on Environment: Environment: Found in the mine dump.
Help on IMA Status: IMA Status: Approved IMA 1985
Help on Locality: Locality: Matsumaezawa ore body, Tahohata mine, Ivate Prefecture, Japan. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for its composition and for Matsuo Nambu (1917-), mineralogist, Tohoko University, Japan.
Help on Name Pronunciation: Name Pronunciation: Natronambulite + Pronunciation Say NATRONAMBULITE
Help on Synonym: Synonym: ICSD 855
  PDF 39-332

Natronambulite Image

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Comments: Thin section image of natronamulite (Nn) in assocation with aegirine (Ac), arfvedsonite (Am) and quartz (Q). (JMPS, v12:332).
Location: Tanohata mine, Iwate Prefecture, Japan. Scale: Picture Size 1.9 x 1.5 mm.
© Mineralogical Journal

Natronambulite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.6478:1:0.5727
Help on Cell Dimensions: Cell Dimensions: a = 7.62, b = 11.762, c = 6.737, Z = 2; alpha = 92.81°, beta = 94.55°, gamma = 106.87° V = 575.32 Den(Calc)= 3.58
Help on Crystal System: Crystal System: Triclinic - Pinacoidal H-M Symbol ( 1) Space Group: P1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.559(1), 7.13(0.47), 3.078(0.45),

Physical Properties of Natronambulite

Help on Cleavage: Cleavage: {100} Perfect, {001} Perfect
Help on Color: Color: Pink orange.
Help on Density: Density: 3.51
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Hardness: Hardness: 5.5-6 - Knife Blade-Orthoclase
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: very pale orange

Optical Properties of Natronambulite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.006 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.025 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1998,KPDmeas= 0.2038,KC= 0.205
Ncalc = 1.72 - 1.73
Help on Optical Data: Optical Data: Biaxial (+), a=1.706, b=1.71, g=1.73, bire=0.0240, 2V(Calc)=50, 2V(Meas)=45.

Calculated Properties of Natronambulite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.40 gm/cc
note: Specific Gravity of Natronambulite =3.51 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PENatronambulite = 9.99 barns/electron
U=PENatronambulite x rElectron Density= 33.92 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Natronambulite is Not Radioactive

Natronambulite Classification

Help on  Dana Class: Dana Class: (65)Inosilicate Single-Width Unbranched Chains, W=1
  (65.04)with chains P=5
  (65.04.01)Rhodonite group Rhodonite (Mn,Fe,Mg,Ca)SiO3 P1 1 Babingtonite Ca2(Fe,Mn)FeSi5O14(OH) P1 1 Manganbabingtonite Ca2(Mn,Fe)FeSi5O14(OH) P1 1 Nambulite (Li,Na)Mn4[Si5O14(OH)] P1 1 Natronambulite (Na,Li)Mn4[Si5O14(OH)] P1 1 Marsturite NaCaMn3[Si5O14(OH)] P1,P 1 Tri Lithiomarsturite LiCa2Mn2HSi5O15 P1 1 Scandiobabingtonite! Ca2(Fe,Mn)ScSi5O14(OH) P1 1
Help on  Strunz Class: Strunz Class: 09.DK.05 09 - SILICATES (Germanates)
  09.D - Inosilicates* Structural terminology according to Liebau (1985)
  09.DK -Inosilicates with 5-periodic single chains
09.DK.05 Babingtonite Ca2(Fe,Mn)FeSi5O14(OH) P1 1
09.DK.05 Marsturite NaCaMn3[Si5O14(OH)] P1,P 1 Tri
09.DK.05 Natronambulite (Na,Li)Mn4[Si5O14(OH)] P1 1
09.DK.05 Lithiomarsturite LiCa2Mn2HSi5O15 P1 1
09.DK.05 Manganbabingtonite Ca2(Mn,Fe)FeSi5O14(OH) P1 1
09.DK.05 Nambulite (Li,Na)Mn4[Si5O14(OH)] P1 1
09.DK.05 Rhodonite (Mn,Fe,Mg,Ca)SiO3 P1 1
09.DK.05 Scandiobabingtonite! Ca2(Fe,Mn)ScSi5O14(OH) P1 1

Other Natronambulite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Natronambulite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Dana No: Strunz No: 09.DK.05





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