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Nambulite Mineral Data

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General Nambulite Information

Help on Chemical  Formula: Chemical Formula: (Li,Na)Mn++4[Si5O14(OH)]
Help on Composition: Composition: Molecular Weight = 612.13 gm
   Sodium      0.94 %  Na    1.27 % Na2O
   Lithium     0.85 %  Li    1.83 % Li2O
   Manganese  35.90 %  Mn   46.35 % MnO
   Silicon    22.94 %  Si   49.08 % SiO2
   Hydrogen    0.16 %  H     1.47 % H2O
   Oxygen     39.21 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Li0.75Na0.25Mn2+4Si5O14(OH)
Help on Environment: Environment: Forms a series with natronambulite.
Help on IMA Status: IMA Status: Approved IMA 1972
Help on Locality: Locality: Funakozawa mine, Kitakami Mountains, Iwate Prefecture, Japan. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Matsuo Nambu (1917-), mineralogist, Tohoko University, Japan.
Help on Name Pronunciation: Name Pronunciation: Nambulite + Pronunciation Say NAMBULITE
Help on Synonym: Synonym: ICSD 1974
  PDF 27-1253
 

Nambulite Image

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  Nambulite

Comments: Brown crystalline nambulite with pinkish rhodonite.
Location: Gozaisho Mine, Iwaki, Fukushima, Japan. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Nambulite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.6479:1:0.5723
Help on Cell Dimensions: Cell Dimensions: a = 7.621, b = 11.761, c = 6.731, Z = 2; alpha = 92.77°, beta = 95.08°, gamma = 106.87° V = 574.40 Den(Calc)= 3.54
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): 2.96(1), 2.97(0.8), 2.92(0.7),
 

Physical Properties of Nambulite

Help on Cleavage: Cleavage: {001} Perfect, {100} Distinct, {010} Distinct
Help on Color: Color: Reddish orange brown.
Help on Density: Density: 3.51
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Hardness: Hardness: 6.5 - Pyrite
Help on Luster: Luster: Vitreous - Adamantine
Help on Streak: Streak: light yellow
 

Optical Properties of Nambulite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.012 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.023 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2016,KPDmeas= 0.2039,KC= 0.2064
Ncalc = 1.72 - 1.73
Help on Optical Data: Optical Data: Biaxial (+), a=1.707, b=1.71, g=1.73, bire=0.0230, 2V(Calc)=44, 2V(Meas)=30. Dispersion r > v weak.
 

Calculated Properties of Nambulite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.39 gm/cc
note: Specific Gravity of Nambulite =3.51 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PENambulite = 10.09 barns/electron
U=PENambulite x rElectron Density= 34.24 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Nambulite is Not Radioactive
 

Nambulite Classification

Help on  Dana Class: Dana Class: 65.04.01.04 (65)Inosilicate Single-Width Unbranched Chains, W=1
  (65.04)with chains P=5
  (65.04.01)Rhodonite group
 
65.04.01.01 Rhodonite (Mn,Fe,Mg,Ca)SiO3 P1 1
 
65.04.01.02 Babingtonite Ca2(Fe,Mn)FeSi5O14(OH) P1 1
 
65.04.01.03 Manganbabingtonite Ca2(Mn,Fe)FeSi5O14(OH) P1 1
 
65.04.01.04 Nambulite (Li,Na)Mn4[Si5O14(OH)] P1 1
 
65.04.01.05 Natronambulite (Na,Li)Mn4[Si5O14(OH)] P1 1
 
65.04.01.06 Marsturite NaCaMn3[Si5O14(OH)] P1,P 1 Tri
 
65.04.01.07 Lithiomarsturite LiCa2Mn2HSi5O15 P1 1
 
65.04.01.08 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 Nambulite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Nambulite :
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
15 - WWW-MINCRYST

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Nambulite

(Li,Na)Mn++4[Si5O14(OH)]
Dana No: 65.04.01.04 Strunz No: 09.DK.05
Locality:

 

Notes:

 

 
   
 


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