IMA2004-019 Mineral Data

IMA2004-019 Mineral Data

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General IMA2004-019 Information

Chemical Formula:

Ba(Ce,REE)(CO3)2F

Composition:

Molecular Weight = 417.43 gm

Barium 32.90 % Ba 36.73 % BaO

Cerium 25.17 % Ce 29.49 % Ce₂O₃

La,Ce,Pr,Nd,Sm, 8.62 % RE 10.06 % REE₂O₃

Carbon 5.75 % C 21.09 % CO₂

Oxygen 23.00 % O

Fluorine 4.55 % F 4.55 % F

- % F -1.92 % -O=F₂

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

BaCe_0.75REE_0.25(CO₃)₂F

Environment:

Polymorph of huanghoite-(Ce)

IMA Status:

Proposed IMA 2004 (Dana # Added)

Locality:

Qaqarssuk complex, Greenland Link to MinDat.org Location Data.

Name Origin:

Commission on New Minerals and Mineral Names (CNMMN)

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IMA2004-019 Crystallography

Axial Ratios:

a:c = 1:2.52257

Cell Dimensions:

a = 7.2097, c = 18.187, Z = 3; V = 818.70 Den(Calc)= 2.54

Crystal System:

Trigonal - PyramidalH-M Symbol (3) Space Group: P 3

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

By Intensity(I/I_o): 3.351(1), 2.08(0.6), 4.552(0.43),3.539(0.41), 3.096(0.4), 2.109(0.39), 2.571(0.35), 3.674(0.32),

Optical Properties of IMA2004-019

Optical Data:

NCalc= 1.38 - from Gladstone-Dale relationship (KC = 0.1492) where Ncalc=Dcalc*KC+1

Calculated Properties of IMA2004-019

Electron Density:

r_electron=2.24 gm/cc
note: r_IMA2004-019=2.54 gm/cc.

Fermion Index

Fermion Index = 0.07542
Boson Index = 0.92458

Photoelectric:

PE_IMA2004-019= 337.39 barns/electron
U=PE_IMA2004-019 x r_electron= 754.46 barns/cc.

Radioactivity:

GRapi = 31,768.79 (Gamma Ray American Petroleum Institute Units)

IMA2004-019 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) 957.44 ±239.36 grams of pure IMA2004-019 .

**Estimated Radioactivity from IMA2004-019** - 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 / 9.09 cm	757,786	2.05E-05	31,768.79	10.44
100 gm / 4.22 cm	75,779	2.05E-06	3,176.88	1.04
10 gm / 1.96 cm	7,578	2.05E-07	317.69	0.10
1 gm / 9.09 mm	758	2.05E-08	31.77	0.01
0.1 gm / 4.22 mm	76	2.05E-09	3.18	0.00
0.01 gm / 1.96 mm	8	2.05E-10	0.32	0.00
0.001 gm / 0.91 mm	1	2.05E-11	0.03	0.00

Weight of pure IMA2004-019 in grams (gm) and Calculated Diameter of a Sphere with a Density of 2.54 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 ( 1.69 % Th) From Sum REE Elements (33.80 % REE)

IMA2004-019 Classification

Dana Class:

16a.1.4.2 (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/X.00-00 V - Nitrates, Carbonates and Borates

V/X - Unclassified Strunz Nitrates, Carbonates and Borates

V/X.00 - Carbonate, Fluoride

Other IMA2004-019 Information

See Also:

Links to other databases for IMA2004-019 :
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)

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Translate IMA2004-019 Mineral Data :

Ask about IMA2004-019 here :
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Print or Cut-and-Paste your IMA2004-019 Specimen Label here :

IMA2004-019

Ba(Ce,REE)(CO3)2F
Dana No: 16a.1.4.2 Strunz No: V/X.00-00
Locality:

Notes: