Huanghoite-(Ce) Mineral Data

Huanghoite-(Ce) Mineral Data +

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General Huanghoite-(Ce) Information

Chemical Formula:

BaCe(CO3)2F

Composition:

Molecular Weight = 416.46 gm

Barium 32.97 % Ba 36.82 % BaO

Cerium 33.64 % Ce 39.41 % Ce₂O₃

Carbon 5.77 % C 21.14 % CO₂

Oxygen 23.05 % O

Fluorine 4.56 % F 4.56 % F

- % F -1.92 % -O=F₂

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

BaCe(CO₃)₂F

IMA Status:

Approved IMA 1961

Locality:

Link to MinDat.org Location Data.

Synonym:

ICSD 74178

PDF 15-286

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Huanghoite-(Ce) Crystallography

Axial Ratios:

a:c = 1:7.5828

Cell Dimensions:

a = 5.072, c = 38.46, Z = 6; V = 856.84 Den(Calc)= 4.84

Crystal System:

Trigonal - Hexagonal ScalenohedralH-M Symbol (3 2/m) Space Group: R 3m

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

By Intensity(I/I_o): 1.937(1), 3.21(1), 2.01(0.9),

Crystal Structure:

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Yang Z M , Pertlik F , Neues Jahrbuch fur Mineralogie, Monatshefte , 1993 (1993) p.163-171, Huanghoite-(Ce), BaCe(CO3)2F, from Khibina, Kola peninsula, Russia:, Redetermination of the crystal structure with a discussion on space group symmetry, Locality: Khibina, Kola Peninsula, Russia

Physical Properties of Huanghoite-(Ce)

Cleavage:

[???] Indistinct, [0001] Distinct

Color:

Yellow green, Honey yellow.

Density:

4.51 - 4.67, Average = 4.59

Diaphaniety:

Translucent

Fracture:

Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.

Hardness:

4.7

Luster:

Greasy (Oily)

Optical Properties of Huanghoite-(Ce)

Gladstone-Dale:

CI meas= 0.011 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.062 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1413,KPDmeas= 0.149,KC= 0.1506

Optical Data:

Uniaxial (-), e=1.603, w=1.765, bire=0.1620.

Calculated Properties of Huanghoite-(Ce)

Electron Density:

r_electron=4.03 gm/cc
note: r_{Huanghoite-(Ce)}=4.59 gm/cc.

Fermion Index

Fermion Index = 0.05951
Boson Index = 0.94049

Photoelectric:

PE_{Huanghoite-(Ce)}= 327.24 barns/electron
U=PE_{Huanghoite-(Ce)} x r_electron=1,320.03 barns/cc.

Radioactivity:

GRapi = 31,539.16 (Gamma Ray American Petroleum Institute Units)

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

Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 10 cm box) 964.41 ±241.10 grams of pure Huanghoite-(Ce) .

**Estimated Radioactivity from Huanghoite-(Ce)** - 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 / 7.47 cm	753,634	2.04E-05	31,539.16	10.37
100 gm / 3.47 cm	75,363	2.04E-06	3,153.92	1.04
10 gm / 1.61 cm	7,536	2.04E-07	315.39	0.10
1 gm / 7.47 mm	754	2.04E-08	31.54	0.01
0.1 gm / 3.47 mm	75	2.04E-09	3.15	0.00
0.01 gm / 1.61 mm	8	2.04E-10	0.32	0.00
0.001 gm / 0.75 mm	1	2.04E-11	0.03	0.00

Weight of pure Huanghoite-(Ce) in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.59 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 ( 1.68 % Th) From Sum REE Elements (33.64 % REE)

Huanghoite-(Ce) Classification

Dana Class:

16a.1.4.1 (16a)Carbonates - Hydroxyl or Halogen

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

(16a.1.4)Dana Group

16a.1.4.1 Huanghoite-(Ce) BaCe(CO3)2F R 3m 3 2/m

16a.1.4.2 IMA2004-019! Ba(Ce,REE)(CO3)2F P 3 3

Strunz Class:

V/C.07-130 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 Huanghoite-(Ce) Information

References:

PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Huanghoite-(Ce) :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 -École des Mines de Paris

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Print or Cut-and-Paste your Huanghoite-(Ce) Specimen Label here :

Huanghoite-(Ce)

BaCe(CO3)2F
Dana No: 16a.1.4.1 Strunz No: V/C.07-130
Locality:

Notes: