Mineralogy Database

Gagarinite-(Y) Mineral Data

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General Gagarinite-(Y) Information

Help on Chemical  Formula: Chemical Formula: NaCaY(F,Cl)6
Help on Composition: Composition: Molecular Weight = 290.65 gm
   Sodium     7.91 %  Na   10.66 % Na2O
   Calcium   13.79 %  Ca   19.29 % CaO
   Yttrium   30.59 %  Y    38.85 % Y2O3
   Chlorine  18.30 %  Cl   18.30 % Cl
               -   %   Cl   -4.13 % -O=Cl2   
   Fluorine  29.41 %  F    29.41 % F
               -   %   F   -12.39 % -O=F2    
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: NaCaYF4.5Cl1.5
Help on Environment: Environment: Found in alkaline rocks.
Help on IMA Status: IMA Status: Approved IMA 1961
Help on Locality: Locality: Kazakhstan Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after Yuri Alekseevich Gagarin (1934-1968), the first cosmonaut and the first person to travel in space.
Help on Name Pronunciation: Name Pronunciation: Gagarinite-(Y) + Pronunciation Say GAGARINITE-(Y)
Help on Synonym: Synonym: ICSD 39845
  PDF 15-69

Gagarinite-(Y) Image

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Comments: Brownish to gray crystals of gagarinite-(Y) in matrix.
Location: Gjerdingen, Jevnaker, Oppland, Norway. Scale: Picture size 3 mm.
© Thomas Witzke / Abraxas-Verlag

Gagarinite-(Y) Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:0.58931
Help on Cell Dimensions: Cell Dimensions: a = 5.99, c = 3.53, Z = 1; V = 109.69 Den(Calc)= 4.40
Help on Crystal System: Crystal System: Trigonal - Rhombohedral H-M Symbol ( 3) Space Group: P 3
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 1.72(1), 2.09(0.9), 2.92(0.5),3(0.5), 1.13(0.3), 5.24(0.3), 1.96(0.2), 2.28(0.2),

Physical Properties of Gagarinite-(Y)

Help on Cleavage: Cleavage: {0001} Fair
Help on Color: Color: Yellow, Cream white, Light brown, Pink.
Help on Density: Density: 4.21
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Massive - Uniformly indistinguishable crystals forming large masses.
Help on Hardness: Hardness: 4.5 - Between Fluorite and Apatite
Help on Luster: Luster: Vitreous - Dull
Help on Magnetism: Magnetism: Slightly magnetic
Help on Streak: Streak: white

Optical Properties of Gagarinite-(Y)

Help on Optical Data: Optical Data: Uniaxial (+), w=1.472, e=1.492, bire=0.0200.

Calculated Properties of Gagarinite-(Y)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.12 gm/cc
note: Specific Gravity of Gagarinite-(Y) =4.40 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0001861557
Boson Index = 0.9998138443
Help on Photoelectric: Photoelectric: PEGagarinite-(Y) = 41.66 barns/electron
U=PEGagarinite-(Y) x rElectron Density= 171.55 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Gagarinite-(Y) is Not Radioactive

Gagarinite-(Y) Classification

Help on  Dana Class: Dana Class: (11)Halide Complexes; Alumino-fluorides
  (11.05)where (A)m B (X)6
  (11.05.06)Dana Group Gagarinite-(Y) NaCaY(F,Cl)6 P 3 3 IMA2009-015 NaSrCeF6 P 63/m 6/m
Help on  Strunz Class: Strunz Class: 03.AB.35 03 - HALIDES
  03.A - Simple Halides, Without H2O
  03.AB -M:X = 1:2
03.AB.35 Gagarinite-(Y) NaCaY(F,Cl)6 P 3 3
03.AB.35 Zajacite-(Ce) Na(REExCa1-x)(REEyCa1-y)F6where(xney) P 3 3

Other Gagarinite-(Y) Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Gagarinite-(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

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Dana No: Strunz No: 03.AB.35





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