Mineralogy Database

Shomiokite-(Y) Mineral Data

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General Shomiokite-(Y) Information

Help on Chemical  Formula: Chemical Formula: Na3Y(CO3)3•3(H2O)
Help on Composition: Composition: Molecular Weight = 391.95 gm
   Sodium    17.60 %  Na   23.72 % Na2O
   Yttrium   22.68 %  Y    28.81 % Y2O3
   Hydrogen   1.54 %  H    13.79 % H2O
   Carbon     9.19 %  C    33.69 % CO2
   Oxygen    48.98 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na3Y(CO3)3•3(H2O)
Help on Environment: Environment: Interstices and as large segregations in potassic feldspar in pegmatites.
Help on IMA Status: IMA Status: Approved IMA 1992
Help on Locality: Locality: Mt. Alluaiv, Lovozero massif, Kola Peninsula, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the Shomiok River, in the Lovozero massif, flowing near Mt. Alluaiv, where the mineral was first found.
Help on Name Pronunciation: Name Pronunciation: Shomiokite-(Y) + Pronunciation Say SHOMIOKITE-(Y)
Help on Synonym: Synonym: ICSD 82483
  PDF 46-1418

Shomiokite-(Y) Image

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Comments: Rose-colored single crystal of shomiokite-(Y).
Location: Mt. Alluaiv, Lovozero, Kola, Russia. Scale: Specimen Size 6x9 mm.
© Diederik Visser

Shomiokite-(Y) Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.7299:1:0.5925
Help on Cell Dimensions: Cell Dimensions: a = 17.358, b = 10.034, c = 5.946, Z = 4; V = 1,035.62 Den(Calc)= 2.51
Help on Crystal System: Crystal System: Orthorhombic - Pyramidal H-M Symbol (mm2) Space Group: Pbn21
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.076(1), 2.858(0.7), 4.85(0.65),

Physical Properties of Shomiokite-(Y)

Help on Cleavage: Cleavage: {???} Perfect
Help on Color: Color: Colorless.
Help on Density: Density: 2.52
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Hardness: Hardness: 2-3 - Gypsum-Calcite
Help on Luster: Luster: Earthy (Dull)
Help on Streak: Streak: white

Optical Properties of Shomiokite-(Y)

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.009 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.005 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2109,KPDmeas= 0.2101,KC= 0.212
Ncalc = 1.53
Help on Optical Data: Optical Data: Biaxial (+), a=1.528, b=1.529, g=1.531, bire=0.0030, 2V(Calc)=72, 2V(Meas)=39-49.

Calculated Properties of Shomiokite-(Y)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.46 gm/cc
note: Specific Gravity of Shomiokite-(Y) =2.51 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0012487012
Boson Index = 0.9987512988
Help on Photoelectric: Photoelectric: PEShomiokite-(Y) = 27.61 barns/electron
U=PEShomiokite-(Y) x rElectron Density= 67.91 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Shomiokite-(Y) is Not Radioactive

Shomiokite-(Y) Classification

Help on  Dana Class: Dana Class: (15)Hydrated Carbonates
  (15.04)Dana Type
  (15.04.07)Dana Group Shomiokite-(Y) Na3Y(CO3)3•3(H2O) Pbn21 mm2
Help on  Strunz Class: Strunz Class: 05.CC.20 05 - CARBONATES (NITRATES)
  05.C - Carbonates without Additional Anions, with H2O
  05.CC -With rare-earth elements (REE)
05.CC.20 Shomiokite-(Y) Na3Y(CO3)3•3(H2O) Pbn21 mm2
05.CC.20 IMA2008-069 Na3Y(CO3)3•6H2O P 63 6

Other Shomiokite-(Y) Information

Help on References: References: NAME( AntBidBlaNic3) PHYS. PROP.(Am.Min.,Vol.79,p766,1994) OPTIC PROP.(Am.Min.,Vol.79,p766,1994)
Help on See Also: See Also: Links to other databases for Shomiokite-(Y) :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Athena
5 - EUROmin Project
6 - GeoScienceWorld
7 - Google Images
8 - Google Scholar
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: 05.CC.20





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