Yoshimuraite Mineral Data (original) (raw)
General Yoshimuraite Information
Chemical Formula:
(Ba,Sr)2(Mn,Fe)2(Ti,Fe)(Si2O7)2(PO4,SO4)(OH)
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
Empirical Formula:
Ba1.8Sr0.2Mn2+1.6Fe2+0.4Ti0.8Fe3+0.2(Si2O7)(PO4)0.6(SO4)0.4(OH)
Environment:
In the border facies of an alkalic pegmatite cutting a stratiform manganese deposit
IMA Status:
Approved IMA 1961
Locality:
In the Noda-Tamagawa mine, Iwate Prefecture, Japan. Link to MinDat.org Location Data.
Name Origin:
Named for Toyofumi Yoshimura, Kyushu University, Hakozaki, Japan.
Name Pronunciation:
Yoshimuraite + Pronunciation 
Synonym:
ICSD 89862
PDF 36-411
Yoshimuraite Image
Images:
Images:
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Yoshimuraite Katophorite 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 |
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Yoshimuraite Crystallography
Axial Ratios:
a:b:c =0.7695:1:2.1071
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
Crystal System:
Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1
X Ray Diffraction:
By Intensity(I/Io): 2.91(1), 3.21(0.5), 4.85(0.5),
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
Cleavage:
{010} Perfect, {101} Distinct, {101} Distinct
Color:
Orange brown.
Density:
4.13
Fracture:
Brittle - Generally displayed by glasses and most non-metallic minerals.
Hardness:
4.5 - Between Fluorite and Apatite
Optical Properties of Yoshimuraite
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
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
Electron Density:
Bulk Density (Electron Density)=3.77 gm/cc
note: Specific Gravity of Yoshimuraite =4.13 gm/cc.
Fermion Index:
Fermion Index = 0.07
Boson Index = 0.93
Photoelectric:
PEYoshimuraite = 163.13 barns/electron
U=PEYoshimuraite x rElectron Density= 615.41 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Yoshimuraite is Not Radioactive
Yoshimuraite Classification
Dana Class:
58.02.06.01 (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
58.02.06.01 Yoshimuraite (Ba,Sr)2(Mn,Fe)2(Ti,Fe)(Si2O7)2(PO4,SO4)(OH) P1 1
58.02.06.02 Innelite (Na,Mg,Ca)2(Ba,K)4Ti3(Si2O7)2(SO4)2(OH,F) P1 1
58.02.06.03 Phosphoinnelite! Ba4Na3Ti3Si4O14(PO4,SO4)2(O,F)3 P1 or P1 Tri
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
References:
NAME( AntBidBlaNic2) PHYS. PROP.(AmMin, Vol 86) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
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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Print or Cut-and-Paste your Yoshimuraite Specimen Label here :
Yoshimuraite
(Ba,Sr)2(Mn,Fe)2(Ti,Fe)(Si2O7)2(PO4,SO4)(OH)
Dana No: 58.02.06.01 Strunz No: 09.BE.42
Locality:
Notes: