Yoshimuraite Mineral Data

Advertisment

Dakota Matrix was founded in 1996 and has offered systematic and rare mineral specimens online since 1998.

John Betts - Fine Minerals, New York. Dealers of Fine Minerals and Natural Crystal Clusters since 1989. We buy rock collections, we buy gem collections, we buy mineral collections.

McDougall Minerals sells high-quality mineral specimens from all over the world to collectors of all levels, from beginners to connoisseurs

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:

Ba_1.8Sr_0.2Mn²⁺_1.6Fe²⁺_0.4Ti_0.8Fe³⁺_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:

Yoshimuraite

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

Images:

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

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

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 2.91(1), 3.21(0.5), 4.85(0.5),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

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:

PE_Yoshimuraite= 163.13 barns/electron
U=PE_Yoshimuraite 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

Search for Yoshimuraite using:

[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Yoshimuraite :

Dakota Matrix Minerals Google Search for Yoshimuraite
John Betts Fine Minerals Search for Yoshimuraite
McDougall Minerals Google Search for Yoshimuraite
Rock and Mineral Shows Google Search for Yoshimuraite
Weinrich Minerals, Inc. Google Search for Yoshimuraite

Ask about Yoshimuraite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

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: