Iimoriite-(Y) Mineral Data

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General Iimoriite-(Y) Information

Chemical Formula:

Y2(SiO4)(CO3)

Composition:

Molecular Weight = 329.90 gm

Yttrium 53.90 % Y 68.45 % Y₂O₃

Silicon 8.51 % Si 18.21 % SiO₂

Carbon 3.64 % C 13.34 % CO₂

Oxygen 33.95 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Y₂(SiO₄)(CO₃)

Environment:

In quartz-microcline pegmatite.

IMA Status:

Approved IMA 1970

Locality:

Fusamata and Suishoyama, Kawatamachi, Fukushima Prefecture, Honsh, and Soraku, Kyoto Prefecture, Japan. Link to MinDat.org Location Data.

Name Origin:

Named for Satoyasa Iimorii (1885-1982), Japanese analytical chemist and REE specialist.

Name Pronunciation:

Iimoriite-(Y) + Pronunciation

Synonym:

ICSD 82489

PDF 35-640

Iimoriite-(Y) Image

Images:

Iimoriite-(Y)

Comments: Nearly colorless prismatic crystal of immolate-(Y) on dolomite.
Location: Trimouns Talc Mine, Luzenac, Ariège, Midi-Pyrénées, France. Scale: Picture size 1.2 mm.
© Thomas Witzke / Abraxas-Verlag

Iimoriite-(Y) Crystallography

Axial Ratios:

a:b:c =0.9882:1:0.9703

Cell Dimensions:

a = 6.573, b = 6.651, c = 6.454, Z = 2; alpha = 116.44°, beta = 92.34°, gamma = 95.63° V = 251.21 Den(Calc)= 4.36

Crystal System:

Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1

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

By Intensity(I/I_o): 2.88(1), 2.95(0.8), 2.78(0.4),

Crystal Structure:

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drag2 - RMB Resize/Rotate
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Hughes J M , Foord E E , Jai-Nhuknan J , Bell J M , The Canadian Mineralogist , 34 (1996) p.817-820, The atomic arrangement of Iimoriite-(Y), Y2(SiO4)(CO3)

View Additional jPOWD Structure files for Iimoriite-(Y)
[1]

Physical Properties of Iimoriite-(Y)

Cleavage:

{011} Distinct

Color:

Brown, Colorless, Gray pink, White, Purple gray.

Density:

4.47

Hardness:

5.5-6 - Knife Blade-Orthoclase

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Iimoriite-(Y)

Gladstone-Dale:

CI meas= 0.016 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.004 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1832,KPDmeas= 0.1795,KC= 0.1824
Ncalc = 1.8 - 1.82

Optical Data:

Biaxial (-), a=1.753, b=1.824, g=1.83, bire=0.0770, 2V(Calc)=30, 2V(Meas)=31.

Calculated Properties of Iimoriite-(Y)

Electron Density:

Bulk Density (Electron Density)=4.09 gm/cc
note: Specific Gravity of Iimoriite-(Y) =4.38 gm/cc.

Fermion Index:

Fermion Index = 0.0045391139
Boson Index = 0.9954608861

Photoelectric:

PE_{Iimoriite-(Y)}= 68.13 barns/electron
U=PE_{Iimoriite-(Y)} x rElectron Density= 278.61 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Iimoriite-(Y) is Not Radioactive

Iimoriite-(Y) Classification

Dana Class:

53.01.03.01 (53)Nesosilicate Insular SiO4 Groups and Other Anions of Complex Cations

(53.01)with (CO3)

(53.01.03)Dana Group

53.01.03.01 Iimoriite-(Y) Y2(SiO4)(CO3) P1 1

Strunz Class:

09.AH.05 09 - SILICATES (Germanates)

09.A - Nesosilicates

09.AH -Nesosilicates with CO3, SO4, PO4, etc.

09.AH.05 Iimoriite-(Y) Y2(SiO4)(CO3) P1 1

Other Iimoriite-(Y) Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Iimoriite-(Y) :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - GeoScienceWorld
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info
13 - WWW-MINCRYST

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Print or Cut-and-Paste your Iimoriite-(Y) Specimen Label here :

Iimoriite-(Y)

Y2(SiO4)(CO3)
Dana No: 53.01.03.01 Strunz No: 09.AH.05
Locality:

Notes: