Hydroxylbastnasite-(Ce) Mineral Data

Mineral of the Month Club - An Inexpensive Way to Enjoy Minerals

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 DipyramidalH-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),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Yang H , Dembowski R F , Conrad P G , Downs R T , American Mineralogist , 93 (2008) p.698-701, Crystal structure and Raman spectrum of hydroxyl-bastnasite-(Ce), CeCO3(OH), Note: changed Ce3(z) to .2579 according to authors, Locality: Trimouns, Luzenac, France

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 - Google Images
4 - Google Scholar
5 - Handbook of Mineralogy (UofA)
6 - MinDAT
7 - MinMax(Deutsch)
8 - MinMax(English)
9 - Mineralienatlas (Deutsch)
10 - QUT Mineral Atlas
11 - Ruff.Info

Search for Hydroxylbastnasite-(Ce) using:

[ALTAVISTA] [AOL] [All-The-Web] [HotBot] [Ixquick] [MAMMA] [MSN.COM] [Netscape] [Scirus] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Hydroxylbastnasite-(Ce) :

AA Mineral Specimens

B & L Fine Minerals

Crystalarium.com

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

Dakota Matrix

Desert Winds Gems and Minerals

John Betts Fine Minerals

Mason's Minerals

Mineral News

Mineral of the Month Club

Wrights Rock Shop

Translate Hydroxylbastnasite-(Ce) Mineral Data :

Ask about Hydroxylbastnasite-(Ce) here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

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:

Notes: