Bastnasite-(Ce) Mineral Data

Bastnasite-(Ce) Mineral Data +

We specialise in top quality, fine minerals from Morocco, Namibia,
South Africa, Pakistan, Democratic Republic of Congo (ZaÃƒï¿½Ã‚Â¯re) and China
Worldwide Fine Minerals by B & C GOBIN

General Bastnasite-(Ce) Information

Chemical Formula:

Ce(CO3)F

Composition:

Molecular Weight = 219.12 gm

Cerium 63.94 % Ce 74.90 % Ce₂O₃

Carbon 5.48 % C 20.08 % CO₂

Oxygen 21.90 % O

Fluorine 8.67 % F 8.67 % F

- % F -3.65 % -O=F₂

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Ce(CO₃)F

Environment:

Contact or alteration zones in alkalic rocks.

IMA Status:

Valid Species (Pre-IMA) 1841

Locality:

Bastnas Mine, Riddarhyttan district, Vastermanland, Sweden. Link to MinDat.org Location Data.

Name Origin:

Named after its locality.

Synonym:

Hamartite

Bastnasite-(Ce) Image

Images:

Bastnasite-(Ce)

Comments: Platy crystal of bastn?site-(Ce).
Location: Trimouns, Luzenac, Ari?ge, France. Scale: 0.8 cm.
© John Veevaert

Bastnasite-(Ce) Crystallography

Axial Ratios:

a:c = 1:1.36731

Cell Dimensions:

a = 7.16, c = 9.79, Z = 6; V = 434.65 Den(Calc)= 5.02

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): 2.879(1), 3.564(0.7), 4.88(0.4),

Physical Properties of Bastnasite-(Ce)

Cleavage:

[1011] Imperfect, [0001] Indistinct

Color:

Yellow, Reddish brown.

Density:

4.95 - 5, Average = 4.97

Diaphaniety:

Transparent to Translucent

Fracture:

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

Habit:

Massive - Granular - Common texture observed in granite and other igneous rock.

Habit:

Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).

Hardness:

4-5 - Fluorite-Apatite

Luminescence:

None.

Luster:

Vitreous - Greasy

Streak:

white

Optical Properties of Bastnasite-(Ce)

Gladstone-Dale:

CI meas= 0 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.009 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1529,KPDmeas= 0.1543,KC= 0.1543

Optical Data:

Uniaxial (+), w=1.717, e=1.818, bire=0.1010.

Calculated Properties of Bastnasite-(Ce)

Electron Density:

r_electron=4.40 gm/cc
note: r_{Bastnasite-(Ce)}=4.98 gm/cc.

Fermion Index

Fermion Index = 0.0007
Boson Index = 0.9993

Photoelectric:

PE_{Bastnasite-(Ce)}= 333.56 barns/electron
U=PE_{Bastnasite-(Ce)} x r_electron=1,469.21 barns/cc.

Radioactivity:

GRapi = 60,386.61 (Gamma Ray American Petroleum Institute Units)

Bastnasite-(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) 503.70 ±125.92 grams of pure Bastnasite-(Ce) .

**Estimated Radioactivity from Bastnasite-(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 / 7.27 cm	1,432,338	3.87E-05	60,386.61	19.85
100 gm / 3.37 cm	143,234	3.87E-06	6,038.66	1.99
10 gm / 1.57 cm	14,323	3.87E-07	603.87	0.20
1 gm / 7.27 mm	1,432	3.87E-08	60.39	0.02
0.1 gm / 3.37 mm	143	3.87E-09	6.04	0.00
0.01 gm / 1.57 mm	14	3.87E-10	0.60	0.00
0.001 gm / 0.73 mm	1	3.87E-11	0.06	0.00

Weight of pure Bastnasite-(Ce) in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.98 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 ( 3.20 % Th) From Sum REE Elements (63.94 % REE)

Bastnasite-(Ce) Classification

Dana Class:

16a.1.1.1 (16a)Carbonates - Hydroxyl or Halogen

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

(16a.1.1)Bastnasite Subgroup

16a.1.1.1 Bastnasite-(Ce) Ce(CO3)F P 62c 6 m2

16a.1.1.2 Bastnasite-(La) La(CO3)F P 62c 6 m2

16a.1.1.3 Bastnasite-(Y) Y(CO3)F P 62c 6 m2

Strunz Class:

V/C.07-30 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 Bastnasite-(Ce) Information

References:

NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Ford32)

See Also:

Links to other databases for Bastnasite-(Ce) :
1 - Alkali-Nuts(English) 2 -Am. Min. Crystal Structure Database 3 -Athena 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 - Scandinavian mineral gallery 13 - WWW-MINCRYST

Search for Bastnasite-(Ce) using:

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

Visit our Advertisers for Bastnasite-(Ce) :
AA Mineral Specimens
B and L Minerals
Dan Weinrich Fine Minerals
Dan Weinrich Auctions
e-Rocks Auctions
Excalibur Minerals
Exceptional Minerals
Fabre Minerals
Greenside Minerals
John Betts Fine Minerals
Masons Minerals
Minernet.it
Mineral News
Mineral of the Month Club
MineralsWeb Fine Minerals
Rockshop.cz Kalat Fine Minerals
T G Fine Minerals
Wrights Rock Shop

Translate Bastnasite-(Ce) Mineral Data :

Ask about Bastnasite-(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 Bastnasite-(Ce) Specimen Label here :

Bastnasite-(Ce)

Ce(CO3)F
Dana No: 16a.1.1.1 Strunz No: V/C.07-30
Locality:

Notes: