Cebaite-(Nd) Mineral Data

Cebaite-(Nd) Mineral Data

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General Cebaite-(Nd) Information

Chemical Formula:

Ba3(Nd,Ce)2(CO3)5F2

Composition:

Molecular Weight = 1,036.44 gm

Barium 39.75 % Ba 44.38 % BaO

Cerium 6.76 % Ce 7.92 % Ce₂O₃

Carbon 5.79 % C 21.23 % CO₂

Neodymium 20.88 % Nd 24.35 % Nd₂O₃

Oxygen 23.16 % O

Fluorine 3.67 % F 3.67 % F

- % F -1.54 % -O=F₂

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Ba₃Nd_1.5Ce_0.5(CO₃)₅F₂

IMA Status:

Not Approved IMA 1988 (Dana # Added)

Locality:

Link to MinDat.org Location Data.

Name Origin:

Named after the composition.

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Cebaite-(Nd) Crystallography

Crystal System:

MonoclinicSpace Group: Unk

Physical Properties of Cebaite-(Nd)

Color:

Yellow, Dark yellow.

Density:

4.8

Hardness:

4.5-5 - Near Apatite

Luster:

Vitreous - Waxy

Optical Properties of Cebaite-(Nd)

Optical Data:

NCalc= 1.71 - from Gladstone-Dale relationship (KC = 0.1481) where Ncalc=Dmeas*KC+1

Calculated Properties of Cebaite-(Nd)

Electron Density:

r_electron=4.21 gm/cc
note: r_Cebaite-(Nd)=4.80 gm/cc.

Fermion Index

Fermion Index = 0.11434
Boson Index = 0.88566

Photoelectric:

PE_Cebaite-(Nd)= 341.72 barns/electron
U=PE_Cebaite-(Nd) x r_electron=1,440.16 barns/cc.

Radioactivity:

GRapi = 25,880.93 (Gamma Ray American Petroleum Institute Units)

Cebaite-(Nd) is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram.

**Estimated Radioactivity from Cebaite-(Nd)** - weak
Specimen Size Weight/Volume (Sphere) *	Calculated Activity Bequerols (Bq)	Calculated Activity Curies (Ci)	Estimated Activity GR(api)	Estimated Exposure (mRem**)/hr If Held in Hand For One Hour
1000 gm / 7.36 cm	619,017	1.67E-05	25,880.93	8.51
100 gm / 3.41 cm	61,902	1.67E-06	2,588.09	0.85
10 gm / 1.58 cm	6,190	1.67E-07	258.81	0.09
1 gm / 7.36 mm	619	1.67E-08	25.88	0.01
0.1 gm / 3.41 mm	62	1.67E-09	2.59	0.00
0.01 gm / 1.58 mm	6	1.67E-10	0.26	0.00
0.001 gm / 0.74 mm	1	1.67E-11	0.03	0.00

Weight of pure Cebaite-(Nd) in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.80 gm/cc.*
Goverment Estimate of Average Annual Exposure ( 360 mRem) **
Note: 10 microsieverts/hr = 1 mRem/hr **
Max Permissable Adult Dose 50,000 mRem/yr (hands), 15,000 mRem/yr (eyes)
Lethal Dose LD(50) Exposure 400,000 to 500,000 mRem
Estimated Thorium Activity ( 1.38 % Th) From Sum REE Elements (27.63 % REE)

Cebaite-(Nd) Classification

Dana Class:

16a.1.9.2 (16a)Carbonates - Hydroxyl or Halogen

(16a.1)in the Bastnasite/Shynchysite/Parasite Groups

(16a.1.9)Dana Group

16a.1.9.1 Cebaite-(Ce) Ba3Ce2(CO3)5F2 C 2/m or C 2 Mono

16a.1.9.2 Cebaite-(Nd) ! Ba3(Nd,Ce)2(CO3)5F2 Unk Mono

Strunz Class:

V/C.07-150 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 Cebaite-(Nd) Information

References:

PHYS. PROP.(Am.Min.,Vol.73,p1493,1988)

See Also:

Links to other databases for Cebaite-(Nd) :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -MinDAT 6 -MinMax(Deutsch) 7 -MinMax(English) 8 -Mineralienatlas (Deutsch) 9 -QUT Mineral Atlas

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Print or Cut-and-Paste your Cebaite-(Nd) Specimen Label here :

Cebaite-(Nd)

Ba3(Nd,Ce)2(CO3)5F2
Dana No: 16a.1.9.2 Strunz No: V/C.07-150
Locality:

Notes: