Yoshimuraite Mineral Data + Say YOSHIMURAITE

General Yoshimuraite Information

Help on Chemical  Formula: Chemical Formula: (Ba,Sr)2(Mn,Fe)2(Ti,Fe)(Si2O7)2(PO4,SO4)(OH)
Help on Composition: Composition: Molecular Weight = 705.01 gm
   Barium      35.06 %  Ba   39.15 % BaO
   Strontium    2.49 %  Sr    2.94 % SrO
   Titanium     5.43 %  Ti    9.06 % TiO2
   Manganese   12.47 %  Mn   16.10 % MnO
   Iron         4.75 %  Fe    4.08 % FeO /  2.27 % Fe2O3
   Silicon      7.97 %  Si   17.04 % SiO2
   Phosphorus   2.64 %  P     6.04 % P2O5
   Hydrogen     0.14 %  H     1.28 % H2O
   Sulfur       1.82 %  S     4.54 % SO3
   Oxygen      27.23 %  O
              ______        ______ 
              100.00 %      102.50 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ba1.8Sr0.2Mn2+1.6Fe2+0.4Ti0.8Fe3+0.2(Si2O7)(PO4)0.6(SO4)0.4(OH)
Help on IMA Status: IMA Status: Approved IMA 1961
Help on Locality: Locality: Link to MinDat.org Location Data.
Help on Synonym: Synonym: ICSD 89862
  PDF 36-411
 

Yoshimuraite Image

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Yoshimuraite

Comments: Translucent, brown yoshimuraite microcrystal.
Location: Toguchi Mine, Shidara, Kitashidara-Gun, Aichi, Japan. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Yoshimuraite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.7695:1:2.1071
Help on Cell Dimensions: Cell Dimensions: a = 5.386, b = 6.999, c = 14.748, Z = 2; alpha = 89.98°, beta = 93.62°, gamma = 95.5° V = 552.29 Den(Calc)= 4.24
Help on Crystal System: Crystal System: Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.91(1), 3.21(0.5), 4.85(0.5),
Click Here for Large Yoshimuraite Structure Window Crystal Structure:

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McDonald A M , Grice J D , Chao G Y , The Canadian Mineralogist , 38 (2000) p.649-656, The crystal structure of yoshimuraite, a layered Ba-Mn-Ti silicophosphate,, with comments on five-coordinated Ti

 

Physical Properties of Yoshimuraite

Help on Cleavage: Cleavage: [010] Perfect, [101] Distinct, [101] Distinct
Help on Color: Color: Orange brown.
Help on Density: Density: 4.13
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Hardness: Hardness: 4.5 - Between Fluorite and Apatite
 

Optical Properties of Yoshimuraite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.026 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1828,KPDmeas= 0.1877,KC= 0.1877
Help on Optical Data: Optical Data: Biaxial (+), a=1.763, b=1.777, g=1.785, bire=0.0220, 2V(Calc)=72, 2V(Meas)=85-90.
 

Calculated Properties of Yoshimuraite

Help on Electron Density: Electron Density:

relectron=3.77 gm/cc
note: rYoshimuraite =4.13 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.07624
Boson Index = 0.92376
Help on Photoelectric: Photoelectric:

PEYoshimuraite = 163.13 barns/electron
U=PEYoshimuraite x relectron= 615.41 barns/cc.

Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Yoshimuraite is Not Radioactive

 

Yoshimuraite Classification

Help on  Dana Class: Dana Class: 58.2.6.1 (58)Sorosilicate Insular, Mixed, Single, and Larger Tetrahedral Groups
  (58.2)with cations in [6] and higher coordination; single and double groups (n=1,2)
  (58.2.6)Yoshimuraite and related species
 
58.2.6.1 Yoshimuraite (Ba,Sr)2(Mn,Fe)2(Ti,Fe)(Si2O7)2(PO4,SO4)(OH) P1 1
 
58.2.6.2 Innelite (Na,Mg,Ca)2(Ba,K)4Ti3(Si2O7)2(SO4)2(OH,F) P1 1
Help on  Strunz Class: Strunz Class: VIII/C.25-10 VIII - Silicates
  VIII/C - Sorosilicates, mixed structure with [SiO4]2- "inseln" and [Si2O7]6- groups
  VIII/C.25 - Yoshimuraite - Innelite series
 
VIII/C.25-10 Yoshimuraite (Ba,Sr)2(Mn,Fe)2(Ti,Fe)(Si2O7)2(PO4,SO4)(OH) P1 1
 
VIII/C.25-20 Innelite (Na,Mg,Ca)2(Ba,K)4Ti3(Si2O7)2(SO4)2(OH,F) P1 1
 

Other Yoshimuraite Information

Help on References: References: PHYS. PROP.(AmMin, Vol 86) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Yoshimuraite :
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 -École des Mines de Paris

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Yoshimuraite

(Ba,Sr)2(Mn,Fe)2(Ti,Fe)(Si2O7)2(PO4,SO4)(OH)
Dana No: 58.2.6.1 Strunz No: VIII/C.25-10
Locality:

 

Notes:

 

 
   
 
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