Taikanite Mineral Data + Say TAIKANITE


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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 IMA Status: IMA Status: Approved IMA 1985
Help on Locality: Locality: Link to MinDat.org Location Data.
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 Diaphaniety: Diaphaniety: 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
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:

relectron=3.48 gm/cc
note: rTaikanite =3.79 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.06794
Boson Index = 0.93206
Help on Photoelectric: Photoelectric:

PETaikanite = 148.08 barns/electron
U=PETaikanite x relectron= 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: 65.3.3.1 (65)Inosilicate Single-Width Unbranched Chains, W=1
  (65.3)with chains P=4
  (65.3.3)Dana Group
 
65.3.3.1 Taikanite (Ba,Sr)2Mn2Si4O12 C 2 2
Help on  Strunz Class: Strunz Class: VIII/F.25-30 VIII - Silicates
  VIII/F - Inosilicates (chain and band) Quadruplet chains [Si4O12]8-
  VIII/F.25 - Batisite - Ohmilite series
 
VIII/F.25-10 Batisite BaNaNaTi2O2[Si4O12] Ima2 mm2
 
VIII/F.25-20 Shcherbakovite KKNaTi2O(OH)[Si4O12] I mma 2/m 2/m 2/m
 
VIII/F.25-30 Taikanite (Ba,Sr)2Mn2Si4O12 C 2 2
 
VIII/F.25-40 Krauskopfite BaSi2O4(OH)2·2(H2O) P 21/a 2/m
 
VIII/F.25-50 Ohmilite Sr3(Ti,Fe)(Si2O6)2(O,OH)·2-3(H2O) P 21/m 2/m
 

Other Taikanite Information

Help on References: References: 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 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (MinSocAm) 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 - WWW-MINCRYST 14 -École des Mines de Paris

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Taikanite

(Ba,Sr)2Mn+++2Si4O12
Dana No: 65.3.3.1 Strunz No: VIII/F.25-30
Locality:

 

Notes:

 

 
   
 
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