Taikanite Mineral Data

Taikanite Mineral Data
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General Taikanite Information

Help on Chemical Formula: Chemical Formula: (Ba,Sr)2Mn+++2Si4O12
Help on Composition: Composition: Molecular Weight = 664.01 gm
   Barium     31.02 %  Ba   34.64 % BaO
   Strontium   6.60 %  Sr    7.80 % SrO
   Manganese  16.55 %  Mn   23.78 % Mn2O3
   Silicon    16.92 %  Si   36.19 % SiO2
   Oxygen     28.91 %  O
             ______        ______ 
             100.00 %      102.41 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ba1.5Sr0.5Mn3+2Si4O12
Help on Environment: Environment: In hydrothermal manganese ores related to alkalic dikes intruding limestones and siliceous rocks (Irnimi deposit, Russia); in a bedded manganese deposit (Wessels mine, South Africa) .
Help on IMA Status: IMA Status: Approved IMA 1985
Help on Locality: Locality: Irnimi manganese deposit, Taikan Mountains, Khabarovsk Territory, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Name Pronunciation: Name Pronunciation: Taikanite + Pronunciation Say TAIKANITE
Help on Synonym: Synonym: ICSD 39593
  PDF 39-335
 

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Taikanite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =1.8816:1:0.6627
Help on Cell Dimensions: Cell Dimensions: a = 14.6, b = 7.759, c = 5.142, Z = 2; beta = 93.25° V = 581.56 Den(Calc)= 3.79
Help on Crystal System: Crystal System: Monoclinic - SphenoidalH-M Symbol (2) Space Group: C 2
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.912(1), 2.832(0.9), 2.569(0.8),
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Armbruster T , Oberhansli R , Kunz M , American Mineralogist , 78 (1993) p.1088-1095, Taikanite, BaSr2Mn2O2[Si4O12], from the Wessels mine, South Africa: A chain, silicate related to synthetic Ca3Mn2O2[Si4O12]

 

Physical Properties of Taikanite

Help on Cleavage: Cleavage: {001} Perfect
Help on Color: Color: Greenish black.
Help on Density: Density: 4.72
Help on Diaphaneity: Diaphaneity: Translucent to Opaque
Help on Fracture: Fracture: Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Help on Hardness: Hardness: 6-7 - Orthoclase-Quartz
Help on Luster: Luster: Vitreous - Greasy
 

Optical Properties of Taikanite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.17 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.034 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2094,KPDmeas= 0.1681,KC= 0.2025
Ncalc = 1.77 - 1.96
Help on Optical Data: Optical Data: Biaxial (+), a=1.775, b=1.792, g=1.814, bire=0.0390, 2V(Calc)=84, 2V(Meas)=74-80.
 

Calculated Properties of Taikanite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.48 gm/cc
note: Specific Gravity of Taikanite =3.79 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.06
Boson Index = 0.94
Help on Photoelectric: Photoelectric: PETaikanite = 148.08 barns/electron
U=PETaikanite x rElectron Density= 515.58 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Taikanite is Not Radioactive
 

Taikanite Classification
Help on Dana Class: Dana Class: 65.03.03.01 (65)Inosilicate Single-Width Unbranched Chains, W=1
  (65.03)with chains P=4
  (65.03.03)Dana Group
 
65.03.03.01 Taikanite (Ba,Sr)2Mn2Si4O12 C 2 2
Help on Strunz Class: Strunz Class: 09.DH.25 09 - SILICATES (Germanates)
  09.D - Inosilicates* Structural terminology according to Liebau (1985)
  09.DH -Inosilicates with 4-periodic single chains, Si4O12
 
09.DH.25 Taikanite (Ba,Sr)2Mn2Si4O12 C 2 2
 

Other Taikanite Information
Help on References: References: NAME( AntBidBlaNic2) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Taikanite :
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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Print or Cut-and-Paste your Taikanite Specimen Label here :

Taikanite

(Ba,Sr)2Mn+++2Si4O12
Dana No: 65.03.03.01 Strunz No: 09.DH.25
Locality:

 

Notes: