Mineralogy Database

Reederite-(Y) Mineral Data

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General Reederite-(Y) Information

Help on Chemical  Formula: Chemical Formula: Na15Y2(CO3)9(SO3F)Cl
Help on Composition: Composition: Molecular Weight = 1,197.26 gm
   Sodium    28.80 %  Na   38.83 % Na2O
   Yttrium   14.85 %  Y    18.86 % Y2O3
   Carbon     9.03 %  C    33.08 % CO2
   Sulfur     2.68 %  S     5.35 % SO2
   Chlorine   2.96 %  Cl    2.96 % Cl
               -   %   Cl   -0.67 % -O=Cl2   
   Oxygen    40.09 %  O
   Fluorine   1.59 %  F     1.59 % F
               -   %   F    -0.67 % -O=F2    
            ______        ______ 
            100.00 %       99.33 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na15Y2(CO3)9(SO3)FCl
Help on Environment: Environment: Inclusions in a trona-filled vug in a sodalite xenolith in syenite.
Help on IMA Status: IMA Status: Approved IMA 1994 (Dana # Added)
Help on Locality: Locality: Poudrette Quarry, Mont Saint-Hilaire, Rouville County, Quebec, Canada. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Dr. Richard J. Reeder, currently co-editor of the American Mineralogist.
Help on Name Pronunciation: Name Pronunciation: Reederite-(Y) + Pronunciation Say REEDERITE-(Y)
Help on Synonym: Synonym: ICSD 80832
  PDF 48-1893

Reederite-(Y) Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:1.22489
Help on Cell Dimensions: Cell Dimensions: a = 8.773, c = 10.746, Z = 1; V = 716.27 Den(Calc)= 2.78
Help on Crystal System: Crystal System: Hexagonal - Trigonal Dipyramidal H-M Symbol (6) Space Group: P 6
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.532(1), 2.774(0.8), 4.39(0.8),

Physical Properties of Reederite-(Y)

Help on Cleavage: Cleavage: {001} Perfect
Help on Color: Color: Yellow, Orange brown.
Help on Density: Density: 2.91
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Help on Habit: Habit: Blocky - Crystal shape tends to be equant (e.g. feldspars).
Help on Habit: Habit: Granular - Generally occurs as anhedral to subhedral crystals in matrix.
Help on Hardness: Hardness: 3-3.5 - Calcite-Copper Penny
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Reederite-(Y)

Help on Dichroism (e): Dichroism (e): colorless.
Help on Dichroism (w): Dichroism (w): colorless.
Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.067 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= 0.023 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1951,KPDmeas= 0.1864,KC= 0.1998
Ncalc = 1.56 - 1.58
Help on Optical Data: Optical Data: Uniaxial (-), e=1.537, w=1.548, bire=0.0110.

Calculated Properties of Reederite-(Y)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.69 gm/cc
note: Specific Gravity of Reederite-(Y) =2.78 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0013864829
Boson Index = 0.9986135171
Help on Photoelectric: Photoelectric: PEReederite-(Y) = 18.95 barns/electron
U=PEReederite-(Y) x rElectron Density= 50.96 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Reederite-(Y) is Not Radioactive

Reederite-(Y) Classification

Help on  Dana Class: Dana Class: (17)Compound Carbonates
  (17.01)with miscellaneous formulae
  (17.01.14)Dana Group Mineevite-(Y) Na25Ba(Y,Gd,Dy)2(HCO3)4(CO3)11(SO4)2ClF2 P 63/m 6/m Reederite-(Y)! Na15Y2(CO3)9(SO3F)Cl P 6 6
Help on  Strunz Class: Strunz Class: 05.BF.20 05 - CARBONATES (NITRATES)
  05.B - Carbonates with additional anions, without H2O
  05.BF -With (Cl), SO4, PO4, TeO3
05.BF.20 Reederite-(Y)! Na15Y2(CO3)9(SO3F)Cl P 6 6

Other Reederite-(Y) Information

Help on References: References: NAME( MinRec) PHYS. PROP.(Am.Min.,Vol.80,p1059-1064,1995) OPTIC PROP.(MinRec)
Help on See Also: See Also: Links to other databases for Reederite-(Y) :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Athena
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - Mineralienatlas (Deutsch)
11 - Online Mineral Museum
12 - QUT Mineral Atlas
13 - Ruff.Info

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Dana No: Strunz No: 05.BF.20





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