Tanohataite Mineral Data

General Tanohataite Information

Chemical Formula:

LiMn2Si3O8(OH)

Composition:

Molecular Weight = 346.08 gm

Lithium 2.01 % Li 4.32 % Li₂O

Manganese 31.75 % Mn 41.00 % MnO

Silicon 24.35 % Si 52.08 % SiO₂

Hydrogen 0.29 % H 2.60 % H₂O

Oxygen 41.61 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

LiMn²⁺₂Si₃O₈(OH)

Environment:

Wollastonite group.

IMA Status:

Proposed IMA 2007 (Dana # Added)

Locality:

Matsumaezawa pit, Tanohata mine, Tanohata Village, Iwate Prefecture, Japan. Link to MinDat.org Location Data.

Name Origin:

Named for the type locality.

Synonym:

IMA2007-019

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Tanohataite Crystallography

Axial Ratios:

a:b:c =1.0815:1:0.9519

Cell Dimensions:

a = 7.612, b = 7.038, c = 6.7, Z = 2; alpha = 90.23°, beta = 94.7°, gamma = 105.26° V = 345.12 Den(Calc)= 3.33

Crystal System:

Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1

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

By Intensity(I/I_o): 2.946(1), 3.134(0.89), 3.109(0.69),2.182(0.4), 6.64(0.35), 2.814(0.33), 3.666(0.26), 2.581(0.22),

Optical Properties of Tanohataite

Optical Data:

NCalc= 1.7 - from Gladstone-Dale relationship (KC = 0.2112) where Ncalc=Dcalc*KC+1

Calculated Properties of Tanohataite

Electron Density:

Bulk Density (Electron Density)=3.23 gm/cc
note: Specific Gravity of Tanohataite =3.33 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_Tanohataite= 9.05 barns/electron
U=PE_Tanohataite x rElectron Density= 29.25 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Tanohataite is Not Radioactive

Tanohataite Classification

Dana Class:

65.02.01.08 (65)Inosilicate Single-Width Unbranched Chains, W=1

(65.02)with chains P=3

(65.02.01)Wollastonite group

65.02.01.01a Wollastonite-1A CaSiO3 P1 1

65.02.01.01b Wollastonite-2M* CaSiO3 P 2₁ 2

65.02.01.01c Wollastonite-3A-4A-5A-7A* CaSiO3 P1 1

65.02.01.02 Bustamite (Mn,Ca)3Si3O9 P1 1

65.02.01.03 Ferrobustamite Ca(Fe,Ca,Mn)Si2O6 P1 1

65.02.01.04 Pectolite NaCa2Si3O8(OH) P1 1

65.02.01.05 Serandite Na(Mn,Ca)2Si3O8(OH) P1 1

65.02.01.06 Cascandite Ca(Sc,Fe)Si3O8(OH) C1 1

65.02.01.07 Denisovite (K,Na)Ca2Si3O8(F,OH) Mono

65.02.01.08 Tanohataite! LiMn2Si3O8(OH) P1 1

Strunz Class:

09.DX.00 09 - SILICATES (Germanates)

09.D - Unclassified Strunz Inosilicates

09.DX -Unknown

09.DX.00 Hypersthene? (Mg,Fe)2Si2O6 2/m 2/m 2/m

09.DX.00 Plumalsite* Pb4Al2(SiO3)7(?) Unk Ortho

09.DX.00 IMA2008-070 NaLi2(Fe2Al2Li)(Si6Al2)O22F2 C 2/m 2/m

09.DX.00 IMA2007-015 K(CaNa)(Fe3Al2)(Si6Al2)O22(OH)2 C 2/m 2/m

09.DX.00 Tanohataite! LiMn2Si3O8(OH) P1 1

09.DX.00 Punkaruaivite! Li{Ti2(OH)2[Si4O11(OH)]}•H2O C 2/c 2/m

09.DX.00 Yegorovite! Na4[Si2O4(OH)2]2•7H2O P 2₁/c 2/m

09.DX.00 Kushiroite CaAl2SiO6 C 2/c 2/m

09.DX.00 Grossmanite CaTiAlSiO6 C 2/m 2/m

09.DX.00 IMA2009-009 KNa2Li(Mg,Fe)2Ti2Si8O24 C 2/m 2/m

09.DX.00 IMA2009-010 [Ba6(PO4)2(CO3)][Fe7(OH)4Fe2O2(SiO3)8] P1 1

09.DX.00 IMA2009-012 NaNa2(Mg2Al2Li)Si8O22F2 C 2/m 2/m

Other Tanohataite Information

See Also:

Links to other databases for Tanohataite :
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 Tanohataite Specimen Label here :

Tanohataite

LiMn2Si3O8(OH)
Dana No: 65.02.01.08 Strunz No: 09.DX.00
Locality:

Notes: