Huanghoite-(Ce) Mineral Data

Huanghoite-(Ce) Mineral Data
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General Huanghoite-(Ce) Information

Help on Chemical Formula: Chemical Formula: BaCe(CO3)2F
Help on Composition: 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
Help on Empirical Formula: Empirical Formula: BaCe(CO3)2F
Help on Environment: Environment: Hydrothermal veins associated with rare-earth-bearing carbonatite deposits in alkaline igneous complexes.
Help on IMA Status: IMA Status: Approved IMA 1961
Help on Locality: Locality: Bayan Obo Fe-Nb-REE deposit, 130 km north of Baotou, Inner Mongolia, China. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Huang Ho (Yellow River), China, 150 km south of the Bayan Obo deposit, China, where the first specimens were collected.
Help on Name Pronunciation: Name Pronunciation: Huanghoite-(Ce) + Pronunciation Say HUANGHOITE-(CE)
Help on Synonym: Synonym: ICSD 74178
  PDF 15-286
 

Huanghoite-(Ce) Image

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Huanghoite-(Ce)   Zhonghuacerite-(Ce)

Comments: Brown grains of zhonghuacerite-(Ce) in matrix. This type material may be Huanghoite-(Ce).
Location: Bayan Obo iron mine, Baotou, Inner Mongolia, China. Scale: Not Given.
© Diederik Visser

Huanghoite-(Ce) Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:7.5828
Help on Cell Dimensions: Cell Dimensions: a = 5.072, c = 38.46, Z = 6; V = 856.84 Den(Calc)= 4.84
Help on Crystal System: 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/Io): 1.937(1), 3.21(1), 2.01(0.9),
Click Here for Large Huanghoite-(Ce) Structure Window 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)

Help on Cleavage: Cleavage: {???} Indistinct, {0001} Distinct
Help on Color: Color: Yellow green, Honey yellow.
Help on Density: Density: 4.51 - 4.67, Average = 4.59
Help on Diaphaneity: Diaphaneity: Translucent
Help on Fracture: Fracture: Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.
Help on Hardness: Hardness: 4.7
Help on Luster: Luster: Greasy (Oily)
 

Optical Properties of Huanghoite-(Ce)

Help on Gladstone-Dale: 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
Ncalc = 1.68 - 1.73
Help on Optical Data: Optical Data: Uniaxial (-), e=1.603, w=1.765, bire=0.1620.
 

Calculated Properties of Huanghoite-(Ce)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.03 gm/cc
note: Specific Gravity of Huanghoite-(Ce) =4.59 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.05
Boson Index = 0.95
Help on Photoelectric: Photoelectric: PEHuanghoite-(Ce) = 327.24 barns/electron
U=PEHuanghoite-(Ce) x relectron=1,320.03 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 31,539.17 (Gamma Ray American Petroleum Institute Units)
Concentration of Huanghoite-(Ce) per GRapi unit = 31.71 (PPM)

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
Becquerels
(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 31,539.17 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
Help on Dana Class: Dana Class: 16a.01.04.01 (16a)Carbonates - Hydroxyl or Halogen
  (16a.01)in the Bastnasite/Shynchysite/Parasite Groups
  (16a.01.04)Dana Group
 
16a.01.04.01 Huanghoite-(Ce) BaCe(CO3)2F R 3m 3 2/m
 
16a.01.04.02 Qaqarssukite-(Ce)! Ba(Ce,REE)(CO3)2F P 3c1 3 2/m
Help on Strunz Class: Strunz Class: 05.BD.35 05 - CARBONATES (NITRATES)
  05.B - Carbonates with additional anions, without H2O
  05.BD -With rare-earth elements (REE)
 
05.BD.35 Huanghoite-(Ce) BaCe(CO3)2F R 3m 3 2/m
 

Other Huanghoite-(Ce) Information
Help on References: References: NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Huanghoite-(Ce) :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
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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Print or Cut-and-Paste your Huanghoite-(Ce) Specimen Label here :

Huanghoite-(Ce)

BaCe(CO3)2F
Dana No: 16a.01.04.01 Strunz No: 05.BD.35
Locality:

 

Notes: