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Yoshimuraite Mineral Data

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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 Environment: Environment: In the border facies of an alkalic pegmatite cutting a stratiform manganese deposit
Help on IMA Status: IMA Status: Approved IMA 1961
Help on Locality: Locality: In the Noda-Tamagawa mine, Iwate Prefecture, Japan. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Toyofumi Yoshimura, Kyushu University, Hakozaki, Japan.
Help on Name Pronunciation: Name Pronunciation: Yoshimuraite + Pronunciation Say YOSHIMURAITE
Help on Synonym: Synonym: ICSD 89862
  PDF 36-411

Yoshimuraite Image

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

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  Katophorite   Yoshimuraite

Comments: Dark green katophorite associated with yoshimuraite. Inset fragment shows the transparency of the katophorite.
Location: Toguchi mine, Shidara, Kitashidara-Gun, Aichi, Japan. Scale: See Image.
© Rruff Database

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 - Pinacoidal H-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),

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= 0.04 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= 0.065 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1828,KPDmeas= 0.1877,KC= 0.1954
Ncalc = 1.81 - 1.83
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: Bulk Density (Electron Density)=3.77 gm/cc
note: Specific Gravity of Yoshimuraite =4.13 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.07
Boson Index = 0.93
Help on Photoelectric: Photoelectric: PEYoshimuraite = 163.13 barns/electron
U=PEYoshimuraite x rElectron Density= 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)Sorosilicate Insular, Mixed, Single, and Larger Tetrahedral Groups
  (58.02)with cations in [6] and higher coordination; single and double groups (n=1,2)
  (58.02.06)Yoshimuraite and related species Yoshimuraite (Ba,Sr)2(Mn,Fe)2(Ti,Fe)(Si2O7)2(PO4,SO4)(OH) P1 1 Innelite (Na,Mg,Ca)2(Ba,K)4Ti3(Si2O7)2(SO4)2(OH,F) P1 1 Phosphoinnelite! Ba4Na3Ti3Si4O14(PO4,SO4)2(O,F)3 P1 or P1 Tri
Help on  Strunz Class: Strunz Class: 09.BE.42 09 - SILICATES (Germanates)
  09.B - Sorosilicates
  09.BE -Si2O7 groups with additional anions;
09.BE.42 Yoshimuraite (Ba,Sr)2(Mn,Fe)2(Ti,Fe)(Si2O7)2(PO4,SO4)(OH) P1 1

Other Yoshimuraite Information

Help on References: References: NAME( AntBidBlaNic2) 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 - 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

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Dana No: Strunz No: 09.BE.42





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