Chukhrovite-(Ce) Mineral Data

Chukhrovite-(Ce) Mineral Data

[Mineral Auctions] [Register] [Current Auctions] [Log In] [www.danweinrich.com]
Dan Weinrich Auctions
Specializing In Live Weekly Auctions Of Top Quality Mineral Specimens
The Place To Find Great Specimens At Great Prices!

General Chukhrovite-(Ce) Information

Chemical Formula:

Ca3(Ce,Y)Al2(SO4)F13·10(H2O)

Composition:

Molecular Weight = 824.71 gm

Calcium 14.58 % Ca 20.40 % CaO

Cerium 12.74 % Ce 14.92 % Ce₂O₃

Yttrium 2.70 % Y 3.42 % Y₂O₃

Aluminum 6.54 % Al 12.36 % Al₂O₃

Hydrogen 2.44 % H 21.84 % H₂O

Sulfur 3.89 % S 9.71 % SO₃

Oxygen 27.16 % O

Fluorine 29.95 % F 29.95 % F

- % F -12.61 % -O=F₂

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Ca₃Ce_0.75Y_0.25Al₂(SO₄)F₁₃·10(H₂O)

IMA Status:

Approved IMA 1960

Locality:

Link to MinDat.org Location Data.

Synonym:

ICSD 61184

PDF 43-667

Search for Chukhrovite-(Ce) Images

Images:

Image not yet available on Webmineral.com

Try searching images.google.com or Mindat Picture Gallary for mineral pictures. Caution: The images retrieved may not be appropriate.

Chukhrovite-(Ce) Crystallography

Cell Dimensions:

a = 16.8, Z = 8; V = 4,741.63 Den(Calc)= 2.31

Crystal System:

Isometric - DiploidalH-M Symbol (2/m 3) Space Group: F d3

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

By Intensity(I/I_o): 9.75(1), 5.93(0.8), 3.22(0.7),

Physical Properties of Chukhrovite-(Ce)

Cleavage:

[???] Indistinct

Color:

White.

Diaphaniety:

Transparent to Translucent

Fracture:

Brittle - Uneven - Very brittle fracture producing uneven fragments.

Hardness:

3 - Calcite

Luster:

Vitreous - Pearly

Streak:

white

Optical Properties of Chukhrovite-(Ce)

Gladstone-Dale:

CI calc= 0.047 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1918,KC= 0.2013

Optical Data:

Isotropic, n=1.443.

Calculated Properties of Chukhrovite-(Ce)

Electron Density:

r_electron=2.26 gm/cc
note: r_{Chukhrovite-(Ce)}=2.31 gm/cc.

Fermion Index

Fermion Index = 0.00062
Boson Index = 0.99938

Photoelectric:

PE_{Chukhrovite-(Ce)}= 65.71 barns/electron
U=PE_{Chukhrovite-(Ce)} x r_electron= 148.80 barns/cc.

Radioactivity:

GRapi = 13,324.68 (Gamma Ray American Petroleum Institute Units)

Chukhrovite-(Ce) is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram.

**Estimated Radioactivity from Chukhrovite-(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 / 9.39 cm	285,427	7.71E-06	13,324.68	4.38
100 gm / 4.36 cm	28,543	7.71E-07	1,332.47	0.44
10 gm / 2.02 cm	2,854	7.71E-08	133.25	0.04
1 gm / 9.39 mm	285	7.71E-09	13.32	0.00
0.1 gm / 4.36 mm	29	7.71E-10	1.33	0.00
0.01 gm / 2.02 mm	3	7.71E-11	0.13	0.00
0.001 gm / 0.94 mm	0	7.71E-12	0.01	0.00

Weight of pure Chukhrovite-(Ce) in grams (gm) and Calculated Diameter of a Sphere with a Density of 2.31 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 ( 0.64 % Th) From Sum REE Elements (12.74 % REE)

Chukhrovite-(Ce) Classification

Dana Class:

12.1.5.2 (12)Compound Halides

(12.1)with miscellaneous anions

(12.1.5)Dana Group

12.1.5.1 Chukhrovite-(Y) Ca3(Y,Ce)Al2(SO4)F13·10(H2O) F d3 2/m 3

12.1.5.2 Chukhrovite-(Ce) Ca3(Ce,Y)Al2(SO4)F13·10(H2O) F d3 2/m 3

12.1.5.3 IMA2002-050! Ca4AlSi(SO4)F13·12(H2O) F d3 2/m 3

12.1.5.4 Chukhrovite-(Nd)! Ca3(Nd,Y)Al2(SO4)F13·12(H2O) F d3 2/m 3

Strunz Class:

III/C.01-60 III - Halogenides

III/C - Double halogenides with water, Fluorides

III/C.01 - Gearksutite - Chukhrovite - (Ce) series

III/C.01-10 Gearksutite CaAl(OH,F)5·(H2O) Mono

III/C.01-20 Acuminite SrAlF4(OH)·(H2O) C 2/c 2/m

III/C.01-30 Tikhonenkovite SrAl(OH)F4·(H2O) Unk Mono

III/C.01-35 Artroeite PbAlF3(OH)2 P1 1

III/C.01-40 Creedite Ca3Al2(SO4)(F,OH)10·2(H2O) C 2/c 2/m

III/C.01-50 Chukhrovite-(Y) Ca3(Y,Ce)Al2(SO4)F13·10(H2O) F d3 2/m 3

III/C.01-60 Chukhrovite-(Ce) Ca3(Ce,Y)Al2(SO4)F13·10(H2O) F d3 2/m 3

Other Chukhrovite-(Ce) Information

References:

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

See Also:

Links to other databases for Chukhrovite-(Ce) :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 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 -École des Mines de Paris

Search for Chukhrovite-(Ce) using:

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

Visit our Advertisers for Chukhrovite-(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 Chukhrovite-(Ce) Mineral Data :

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

Chukhrovite-(Ce)

Ca3(Ce,Y)Al2(SO4)F13·10(H2O)
Dana No: 12.1.5.2 Strunz No: III/C.01-60
Locality:

Notes: