Cordylite-(Ce) Mineral Data

[About Us] [Products] [Fluorescent Mineals] [Contact Us]
UVTools is a supplier of affordable ultraviolet lamps and fluorescent minerals
Our customers include mineral dealers, gift shops, and museums worldwide
We provide an array of shortwave, midwave, and longwave lamps at the best price!

General Cordylite-(Ce) Information

Chemical Formula:

Ba(Ce,La)2(CO3)3F2

Composition:

Molecular Weight = 634.98 gm

Barium 21.63 % Ba 24.15 % BaO

Lanthanum 10.94 % La 12.83 % La₂O₃

Cerium 33.10 % Ce 38.77 % Ce₂O₃

Carbon 5.67 % C 20.79 % CO₂

Oxygen 22.68 % O

Fluorine 5.98 % F 5.98 % F

- % F -2.52 % -O=F₂

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

BaCe_1.5La_0.5(CO₃)₃F₂

Environment:

Found in an alkali-rich pegmatite.

IMA Status:

Valid Species (Pre-IMA) 1898

Locality:

Narsarsuk, Julianehaab district, Greenland. Link to MinDat.org Location Data.

Name Origin:

Named from the Greek "cordule" = club, in allusion to the shape of the crystals.

Synonym:

Baiyuneboite-(Ce) - Discredited

ICSD 77499

IMA2000-C

PDF 27-34

Cordylite-(Ce) Image

Images:

Click Here for Larger Cordylite-(Ce) Image

Cordylite-(Ce) Synchysite-(Ce)

Comments: Yellow crystals of cordylite-(Ce) on light brownish synchysite-(Ce).
Location: Narssârssuk (Narsarsuk), Igaliko, Greenland. Scale: Picture size 1.5 mm.
© Thomas Witzke / Abraxas-Verlag

Cordylite-(Ce) Crystallography

Axial Ratios:

a:c = 1:4.51934

Cell Dimensions:

a = 5.093, c = 23.017, Z = 2; V = 517.04 Den(Calc)= 4.08

Crystal System:

Hexagonal - Dihexagonal DipyramidalH-M Symbol (6/m 2/m 2/m) Space Group: P 6₃/mmc

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

By Intensity(I/I_o): 3.846(1), 3.192(0.9), 3.511(0.9),

Forms:

Mouse
Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize
Keyboard
S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu
Help on Above

Forms: ( 1 0 1) ( 4 0 5) ( 0 1 0) ( 0 0 1)

Warning: this large pop-up is very compute intensive and may not work well with some computers.

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

Giester G , Ni Y , Jarosch D , Hughes J M , Ronsbo J G , Yang Z , Zemann J , American Mineralogist , 83 (1998) p.178-184, Cordylite-(Ce): A crystal chemical investigation of material from four, localities, including type material, Sample: from Narssarssuk, Greenland, type sample, determined by the Vienna group, refinement based on F2

View Additional jPOWD Structure files for Cordylite-(Ce)
[1] [2] [3] [4] [5] [6]

Physical Properties of Cordylite-(Ce)

Cleavage:

{0001} Distinct

Color:

Colorless, Gray brown, Yellow.

Density:

4.44

Diaphaneity:

Transparent to Translucent

Fracture:

Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.

Hardness:

4.5 - Between Fluorite and Apatite

Luster:

Adamantine - Greasy

Streak:

white

Optical Properties of Cordylite-(Ce)

Gladstone-Dale:

CI meas= -0.015 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.104 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1683,KPDmeas= 0.1547,KC= 0.1524
Ncalc = 1.62 - 1.68

Optical Data:

Uniaxial (-), e=1.5984, w=1.775, bire=0.1766.

Calculated Properties of Cordylite-(Ce)

Electron Density:

Bulk Density (Electron Density)=3.91 gm/cc
note: Specific Gravity of Cordylite-(Ce) =4.44 gm/cc.

Fermion Index:

Fermion Index = 0.03
Boson Index = 0.97

Photoelectric:

PE_{Cordylite-(Ce)}= 325.57 barns/electron
U=PE_{Cordylite-(Ce)} x r_electron=1,272.57 barns/cc.

Radioactivity:

GRapi = 41,352.47 (Gamma Ray American Petroleum Institute Units)
Concentration of Cordylite-(Ce) per GRapi unit = 24.18 (PPM)

Cordylite-(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) 735.55 ±183.89 grams of pure Cordylite-(Ce) .

**Estimated Radioactivity from Cordylite-(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 / 7.55 cm	986,431	2.67E-05	41,352.47	13.60
100 gm / 3.50 cm	98,643	2.67E-06	4,135.25	1.36
10 gm / 1.63 cm	9,864	2.67E-07	413.52	0.14
1 gm / 7.55 mm	986	2.67E-08	41.35	0.01
0.1 gm / 3.50 mm	99	2.67E-09	4.14	0.00
0.01 gm / 1.63 mm	10	2.67E-10	0.41	0.00
0.001 gm / 0.75 mm	1	2.67E-11	0.04	0.00

Weight of pure Cordylite-(Ce) in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.44 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 ( 2.20 % Th) From Sum REE Elements (44.04 % REE)

Cordylite-(Ce) Classification

Dana Class:

16a.01.07.01 (16a)Carbonates - Hydroxyl or Halogen

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

(16a.01.07)Dana Group

16a.01.07.01 Cordylite-(Ce) Ba(Ce,La)2(CO3)3F2 P 6₃/mmc 6/m 2/m 2/m

16a.01.07.02 Lukechangite-(Ce)! Na3Ce2(CO3)4F P 6₃/mmc 6/m 2/m 2/m

16a.01.07.03 IMA2009-013 NaCe2(CO3)2[(CO3)1-xF2x]F P 6 m2 6 m2

Strunz Class:

05.BD.05 05 - CARBONATES (NITRATES)

05.B - Carbonates with additional anions, without H2O

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

05.BD.05 Cordylite-(Ce) Ba(Ce,La)2(CO3)3F2 P 6₃/mmc 6/m 2/m 2/m

05.BD.05 Lukechangite-(Ce)! Na3Ce2(CO3)4F P 6₃/mmc 6/m 2/m 2/m

Other Cordylite-(Ce) Information

References:

PHYS. PROP.(Am.Min.,Vol.79,p767,1994) OPTIC PROP.(Am.Min.,Vol.79,p767,1994)

See Also:

Links to other databases for Cordylite-(Ce) :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Athena
5 - EUROmin Project
6 - GeoScienceWorld
7 - Google Images
8 - Google Scholar
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST

Search for Cordylite-(Ce) using:

[ALTAVISTA] [AOL] [bing] [GeoScienceWorld] [HotBot] [Ixquick] [MAMMA] [MSN.COM] [Netscape] [Scirus] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Cordylite-(Ce) :

B & L Fine Minerals

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

John Betts Fine Minerals

Lapis Mineral Journal

Mineral News

UV Tools

Wrights Rock Shop

Translate Cordylite-(Ce) Mineral Data :

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

Cordylite-(Ce)

Ba(Ce,La)2(CO3)3F2
Dana No: 16a.01.07.01 Strunz No: 05.BD.05
Locality:

Notes: