Reederite-(Y) Mineral Data

Reederite-(Y) Mineral Data +

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General Reederite-(Y) Information

Chemical Formula:

Na15Y2(CO3)9(SO3F)Cl

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

Empirical Formula:

Na₁₅Y₂(CO₃)₉(SO₃)FCl

Environment:

Inclusions in a trona-filled vug in a sodalite xenolith in syenite.

IMA Status:

Approved IMA 1994 (Dana # Added)

Locality:

Poudrette Quarry, Mont Saint-Hilaire, Rouville County, Quebec, Canada. Link to MinDat.org Location Data.

Name Origin:

For Dr. Richard J. Reeder, currently co-editor of the American Mineralogist.

Synonym:

ICSD 80832

IMA1994-012

PDF 48-1893

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Reederite-(Y) Crystallography

Axial Ratios:

a:c = 1:1.22489

Cell Dimensions:

a = 8.773, c = 10.746, Z = 1; V = 716.27 Den(Calc)= 2.78

Crystal System:

Hexagonal - Trigonal DipyramidalH-M Symbol (6) Space Group: P 6

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

By Intensity(I/I_o): 2.532(1), 2.774(0.8), 4.39(0.8),

Crystal Structure:

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Grice J D , Gault R A , Chao G Y , American Mineralogist , 80 (1995) p.1059-1064, Reederite -(Y), a new sodium rare-earth mineral with a unique fluorosulfate, anion

Physical Properties of Reederite-(Y)

Cleavage:

[001] Perfect

Color:

Yellow, Orange brown.

Density:

2.91

Diaphaniety:

Transparent

Fracture:

Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.

Habit:

Blocky - Crystal shape tends to be equant (e.g. feldspars).

Habit:

Granular - Generally occurs as anhedral to subhedral crystals in matrix.

Hardness:

3-3.5 - Calcite-Copper Penny

Luminescence:

Non-fluorescent.

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Reederite-(Y)

Dichroism (e):

colorless.

Dichroism (w):

colorless.

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

Optical Data:

Uniaxial (-), e=1.537, w=1.548, bire=0.0110.

Calculated Properties of Reederite-(Y)

Electron Density:

r_electron=2.69 gm/cc
note: r_{Reederite-(Y)}=2.78 gm/cc.

Fermion Index

Fermion Index = 0.00138
Boson Index = 0.99862

Photoelectric:

PE_{Reederite-(Y)}= 18.95 barns/electron
U=PE_{Reederite-(Y)} x r_electron= 50.96 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Reederite-(Y) is Not Radioactive

Reederite-(Y) Classification

Dana Class:

17.1.14.2 (17)Compound Carbonates

(17.1)with miscellaneous formulae

(17.1.14)Dana Group

17.1.14.1 Mineevite-(Y) Na25Ba(Y,Gd,Dy)2(HCO3)4(CO3)11(SO4)2ClF2 P 6₃/m 6/m

17.1.14.2 Reederite-(Y) ! Na15Y2(CO3)9(SO3F)Cl P 6 6

Strunz Class:

V/C.07-200 V - Nitrates, Carbonates and Borates

V/C - Waterfree carbonates with unfamiliar anions

V/C.07 - Bastnäsite-(Y) - Mineevite-(Y) series

V/C.07-10 Bastnasite-(Y) Y(CO3)F P 62c 6 m2

V/C.07-20 Bastnasite-(La) La(CO3)F P 62c 6 m2

V/C.07-30 Bastnasite-(Ce) Ce(CO3)F P 62c 6 m2

V/C.07-40 Hydroxylbastnasite-(La) La(CO3)(OH) C 222₁ 2 2 2

V/C.07-50 Hydroxylbastnasite-(Ce) Ce(CO3)(OH) P 62c 6 m2

V/C.07-60 Hydroxylbastnasite-(Nd) Nd(CO3)(OH) P 62c 6 m2

V/C.07-61 Kozoite-(Nd)! (Nd,La,Sm,Pr)(CO3)(OH) Pmcn 2/m 2/m 2/m

V/C.07-62 Kozoite-(La)! La(CO3)(OH) Pmcn 2/m 2/m 2/m

V/C.07-64 Horvathite-(Y)! NaY(CO3)F2 Pmcn 2/m 2/m 2/m

V/C.07-70 Parisite-(Ce) Ca(Ce,La)2(CO3)3F2 R 3 3

V/C.07-80 Parisite-(Nd) Ca(Nd,Ce,La)2(CO3)3F2 R 3 3

V/C.07-90 Rontgenite-(Ce) Ca2(Ce,La)3(CO3)5F3 R 3 3

V/C.07-100 Synchysite-(Y) CaY(CO3)2F C 2/c 2/m

V/C.07-110 Synchysite-(Ce) CaCe(CO3)2F C 2/c 2/m

V/C.07-120 Synchysite-(Nd) CaNd(CO3)2F Unk Ortho

V/C.07-130 Huanghoite-(Ce) BaCe(CO3)2F R 3m 3 2/m

V/C.07-140 Cebaite-(Ce) Ba3Ce2(CO3)5F2 C 2/m or C 2 Mono

V/C.07-150 Cebaite-(Nd)! Ba3(Nd,Ce)2(CO3)5F2 Unk Mono

V/C.07-154 Kukharenkoite-(La)! Ba2(La,Ce)(CO3)3F P 2₁/m 2/m

V/C.07-155 Kukharenkoite-(Ce)! Ba2Ce(CO3)3F P 2₁/m 2/m

V/C.07-160 Zhonghuacerite-(Ce) Ba2Ce(CO3)3F P 2₁/m 2/m

V/C.07-170 Cordylite-(Ce) Ba(Ce,La)2(CO3)3F2 P 6₃/mmc 6/m 2/m 2/m

V/C.07-175 Lukechangite-(Ce)! Na3Ce2(CO3)4F P 6₃/mmc 6/m 2/m 2/m

V/C.07-190 Mineevite-(Y) Na25Ba(Y,Gd,Dy)2(HCO3)4(CO3)11(SO4)2ClF2 P 6₃/m 6/m

V/C.07-200 Reederite-(Y) Na15Y2(CO3)9(SO3F)Cl P 6 6

V/C.07-210 Micheelsenite! (Ca,Y)3Al[PO3OH,CO3](CO3)(OH)6·12(H2O) P 6₃ 6

Other Reederite-(Y) Information

References:

NAME( MinRec) PHYS. PROP.(Am.Min.,Vol.80,p1059-1064,1995) OPTIC PROP.(MinRec)

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 -Google Images 6 -Google Scholar 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 - WWW-MINCRYST

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Reederite-(Y)

Na15Y2(CO3)9(SO3F)Cl
Dana No: 17.1.14.2 Strunz No: V/C.07-200
Locality:

Notes: