Hydroxylbastnasite-(Ce) Mineral Data

General Hydroxylbastnasite-(Ce) Information

Chemical Formula:

Ce(CO3)(OH)

Composition:

Molecular Weight = 217.13 gm

Cerium 64.53 % Ce 75.58 % Ce₂O₃

Hydrogen 0.46 % H 4.15 % H₂O

Carbon 5.53 % C 20.27 % CO₂

Oxygen 29.47 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Ce(CO₃)(OH)

IMA Status:

Approved IMA 1964

Locality:

Unspecified Russian locality. Link to MinDat.org Location Data.

Name Origin:

Named as the hydroxyl analog of bastnasite-(Ce).

Name Pronunciation:

Hydroxylbastnasite-(Ce) + Pronunciation

Synonym:

Hydroxyl-bastnasite-(Ce) - Renamed Hydroxylbastnasite-(Ce) by Mineralogical Record, v39 (2008), p131

Hydroxylbastnasite-(Ce) Image

Images:

Hydroxylbastnasite-(Ce)

Comments: Orangy brown hexagonal tablet of hydroxylbastnasite-(Ce).
Location: Trimouns, Luzenac, France. Scale: See Image.
© Rruff Database

Hydroxylbastnasite-(Ce) Crystallography

Axial Ratios:

a:c = 1:1.38035

Cell Dimensions:

a = 7.23, c = 9.98, Z = 6; V = 451.79 Den(Calc)= 4.79

Crystal System:

Hexagonal - Ditrigonal Dipyramidal H-M Symbol (6 m2) Space Group: P 62c

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

By Intensity(I/I_o): 2.92(1), 2.09(0.9), 3.59(0.9),

Physical Properties of Hydroxylbastnasite-(Ce)

Cleavage:

{1120} Imperfect

Color:

Yellow, Dark brown, Colorless.

Density:

4.745

Diaphaneity:

Transparent to Translucent

Habit:

Aggregates - Made of numerous individual crystals or clusters.

Habit:

Reniform - "Kidney like" in shape (e.g.. hematite).

Hardness:

4 - Fluorite

Luster:

Vitreous - Greasy

Optical Properties of Hydroxylbastnasite-(Ce)

Gladstone-Dale:

CI meas= -0.037 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.027 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1701,KPDmeas= 0.1718,KC= 0.1657
Ncalc = 1.79

Optical Data:

Uniaxial (+), w=1.76, e=1.87, bire=0.1100.

Calculated Properties of Hydroxylbastnasite-(Ce)

Electron Density:

Bulk Density (Electron Density)=4.28 gm/cc
note: Specific Gravity of Hydroxylbastnasite-(Ce) =4.79 gm/cc.

Fermion Index:

Fermion Index = 0.0007506557
Boson Index = 0.9992493443

Photoelectric:

PE_{Hydroxylbastnasite-(Ce)}= 333.53 barns/electron
U=PE_{Hydroxylbastnasite-(Ce)} x r_electron=1,427.43 barns/cc.

Radioactivity:

GRapi = 61,499.16 (Gamma Ray American Petroleum Institute Units)
Concentration of Hydroxylbastnasite-(Ce) per GRapi unit = 16.26 (PPM)

Hydroxylbastnasite-(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) 494.59 ±123.65 grams of pure Hydroxylbastnasite-(Ce) .

**Estimated Radioactivity from Hydroxylbastnasite-(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 / 7.36 cm	1,445,472	3.91E-05	61,499.16	20.22
100 gm / 3.42 cm	144,547	3.91E-06	6,149.92	2.02
10 gm / 1.59 cm	14,455	3.91E-07	614.99	0.20
1 gm / 7.36 mm	1,445	3.91E-08	61.50	0.02
0.1 gm / 3.42 mm	145	3.91E-09	6.15	0.00
0.01 gm / 1.59 mm	14	3.91E-10	0.61	0.00
0.001 gm / 0.74 mm	1	3.91E-11	0.06	0.00

Weight of pure Hydroxylbastnasite-(Ce) in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.79 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 ( 3.23 % Th) From Sum REE Elements (64.53 % REE)

Hydroxylbastnasite-(Ce) Classification

Dana Class:

16a.01.02.01 (16a)Carbonates - Hydroxyl or Halogen

(16a.01)in the Bastnasite/Shynchysite/Parasite Groups

(16a.01.02)Bastnasite Subgroup(Hydroxylbastnasite Series)

16a.01.02.01 Hydroxylbastnasite-(Ce) Ce(CO3)(OH) P 62c 6 m2

16a.01.02.02 Hydroxylbastnasite-(La) La(CO3)(OH) C 222₁ 2 2 2

16a.01.02.03 Hydroxylbastnasite-(Nd) Nd(CO3)(OH) P 62c 6 m2

Strunz Class:

05.BD.20a 05 - CARBONATES (NITRATES)

05.B - Carbonates with additional anions, without H2O

05.BD -With rare-earth elements (REE)

05.BD.20a Bastnasite-(Ce) Ce(CO3)F P 62c 6 m2

05.BD.20a Bastnasite-(La) La(CO3)F P 62c 6 m2

05.BD.20a Bastnasite-(Y) Y(CO3)F P 62c 6 m2

05.BD.20a Hydroxylbastnasite-(Ce) Ce(CO3)(OH) P 62c 6 m2

05.BD.20a Hydroxylbastnasite-(La) La(CO3)(OH) C 222₁ 2 2 2

05.BD.20a Hydroxylbastnasite-(Nd) Nd(CO3)(OH) P 62c 6 m2

05.BD.20a Thorbastnasite Th(Ca,Ce)(CO3)2F2•3(H2O) P 62c 6 m2

Other Hydroxylbastnasite-(Ce) Information

References:

NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Hydroxylbastnasite-(Ce) :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (UofA)
7 - MinDAT
8 - Mineralienatlas (Deutsch)
9 - Online Mineral Museum
10 - QUT Mineral Atlas
11 - Ruff.Info

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

Hydroxylbastnasite-(Ce)

Ce(CO3)(OH)
Dana No: 16a.01.02.01 Strunz No: 05.BD.20a
Locality:

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