Mineralogy Database

Cordylite-(Ce) Mineral Data

Search Webmineral :
  
Advertisment

General Cordylite-(Ce) Information

Help on Chemical  Formula: Chemical Formula: Ba(Ce,La)2(CO3)3F2
Help on Composition: 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
Help on Empirical Formula: Empirical Formula: BaCe1.5La0.5(CO3)3F2
Help on Environment: Environment: Found in an alkali-rich pegmatite.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1898
Help on Locality: Locality: Narsarsuk, Julianehaab district, Greenland. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named from the Greek "cordule" = club, in allusion to the shape of the crystals.
Help on Synonym: Synonym: Baiyuneboite-(Ce) - Discredited
  ICSD 77499
  IMA2000-C
  PDF 27-34
 

Cordylite-(Ce) Image

Click Here for Larger   Image in a New Browser Window Images:
Click Here for Larger   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

Help on Axial Ratios: Axial Ratios: a:c = 1:4.51934
Help on Cell Dimensions: Cell Dimensions: a = 5.093, c = 23.017, Z = 2; V = 517.04 Den(Calc)= 4.08
Help on Crystal System: Crystal System: Hexagonal - Dihexagonal Dipyramidal H-M Symbol (6/m 2/m 2/m) Space Group: P 63/mmc
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.846(1), 3.192(0.9), 3.511(0.9),
Help on Forms: 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 java applet does not work in some browsers because of security restrictions.

 

Physical Properties of Cordylite-(Ce)

Help on Cleavage: Cleavage: {0001} Distinct
Help on Color: Color: Colorless, Gray brown, Yellow.
Help on Density: Density: 4.44
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Fracture: Fracture: Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Help on Hardness: Hardness: 4.5 - Between Fluorite and Apatite
Help on Luster: Luster: Adamantine - Greasy
Help on Streak: Streak: white
 

Optical Properties of Cordylite-(Ce)

Help on Gladstone-Dale: 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
Help on Optical Data: Optical Data: Uniaxial (-), e=1.5984, w=1.775, bire=0.1766.
 

Calculated Properties of Cordylite-(Ce)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.91 gm/cc
note: Specific Gravity of Cordylite-(Ce) =4.44 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.03
Boson Index = 0.97
Help on Photoelectric: Photoelectric: PECordylite-(Ce) = 325.57 barns/electron
U=PECordylite-(Ce) x relectron=1,272.57 barns/cc.
Help on Radioactivity: 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

Help on  Dana Class: 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
Help on  Strunz Class: 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

Help on References: References: PHYS. PROP.(Am.Min.,Vol.79,p767,1994) OPTIC PROP.(Am.Min.,Vol.79,p767,1994)
Help on See Also: 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:

Google
 
Web webmineral.com
[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Cordylite-(Ce) :

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 Espa˝ol

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:

 

 
   
 


Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.