Mineralogy Database

Kukharenkoite-(La) Mineral Data

Search Webmineral :
  
Advertisment

General Kukharenkoite-(La) Information

Help on Chemical  Formula: Chemical Formula: Ba2(La,Ce)(CO3)3F
Help on Composition: Composition: Molecular Weight = 605.99 gm
   Potassium       0.26 %  K     0.31 % K2O
   Barium         39.88 %  Ba   44.53 % BaO
   Sodium          0.19 %  Na    0.26 % Na2O
   Strontium       2.02 %  Sr    2.39 % SrO
   Calcium         0.73 %  Ca    1.02 % CaO
   Lanthanum       9.63 %  La   11.29 % La2O3
   Cerium          4.62 %  Ce    5.42 % Ce2O3
   Praeseodymium   0.70 %  Pr    0.82 % Pr2O3
   Thorium         8.42 %  Th    9.59 % ThO2
   Carbon          5.89 %  C    21.57 % CO2
   Neodymium       0.71 %  Nd    0.83 % Nd2O3
   Oxygen         23.52 %  O
   Fluorine        3.42 %  F     3.42 % F
                    -   %   F    -1.44 % -O=F2    
                 ______        ______ 
                 100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ba1.76Sr0.14K0.04La0.42Th0.22Ce0.2Ca0.11Na0.05Pr0.03Nd0.03(CO3)2.97F1.09
Help on Environment: Environment: Late hydrothermal assemblege in cavities in pegmatites. La-dominant analogue of kukharenkoite-(Ce); structure determined.
Help on IMA Status: IMA Status: Approved IMA 2003 (Dana # Added)
Help on Locality: Locality: Kirovsky mine, Mount Kukisvumchorr, Khibina massif, Kola Peninsula, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as the La dominant analogue of kukharenkoite-Ce).
Help on Name Pronunciation: Name Pronunciation: Kukharenkoite-(La) + Pronunciation Say KUKHARENKOITE-(LA)
Help on Synonym: Synonym: IMA2002-019
 

Kukharenkoite-(La) Image

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

  Kukharenkoite-(La)

Comments: Very small olive-green sprays of kukharenkoite-(La) crystals.
Location: Kirovsky apatite mine, Mount Kukisvumchorr, Khibina massif, Kola Peninsula, Russia.. Scale: Crystal Size to 0.02 cm.
© Jeff Weissman / Photographic Guide to Mineral Species

Kukharenkoite-(La) Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =2.621:1:1.3054
Help on Cell Dimensions: Cell Dimensions: a = 13.396, b = 5.111, c = 6.672, Z = 2; beta = 106.63° V = 437.70 Den(Calc)= 4.60
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.27(1)(310,401,202), 4.01(1)(111,201), 1.998(0.8)(421,222,511, 2.14(0.8)(221,512,600), 2.54(0.5)(020,112), 1.636(0.2), 2.38(0.2), 1.37(0.2)(910,424,712,71
 

Physical Properties of Kukharenkoite-(La)

Help on Cleavage: Cleavage: None
Help on Color: Color: Pale leek green, Colorless, White.
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Fracture: Fracture: Brittle - Uneven - Very brittle fracture producing uneven fragments.
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Habit: Habit: Lath - Shaped like a small, thin plaster lath, tabular (rectangular) in shape.
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Hardness: Hardness: 4 - Fluorite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Kukharenkoite-(La)

Help on Gladstone-Dale: Gladstone-Dale: CI calc= 0.051 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1457,KC= 0.1536
Ncalc = 1.71
Help on Optical Data: Optical Data: Biaxial (-), a=1.581, b=1.715, g=1.715, bire=0.1340, 2V(Calc)=0, 2V(Meas)=5. Dispersion dispersion not observed.
 

Calculated Properties of Kukharenkoite-(La)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.03 gm/cc
note: Specific Gravity of Kukharenkoite-(La) =4.60 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.07
Boson Index = 0.93
Help on Photoelectric: Photoelectric: PEKukharenkoite-(La) = 467.67 barns/electron
U=PEKukharenkoite-(La) x relectron=1,883.01 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 157,305.67 (Gamma Ray American Petroleum Institute Units)
Concentration of Kukharenkoite-(La) per GRapi unit = 6.36 (PPM)

Kukharenkoite-(La) 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) 193.36 ± 48.34 grams of pure Kukharenkoite-(La) .

Estimated Radioactivity from Kukharenkoite-(La) - strong
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 / 7.46 cm 3,774,039 1.02E-04 157,305.67 51.72
100 gm / 3.46 cm 377,404 1.02E-05 15,730.57 5.17
10 gm / 1.61 cm 37,740 1.02E-06 1,573.06 0.52
1 gm / 7.46 mm 3,774 1.02E-07 157.31 0.05
0.1 gm / 3.46 mm 377 1.02E-08 15.73 0.01
0.01 gm / 1.61 mm 38 1.02E-09 1.57 0.00
0.001 gm / 0.75 mm 4 1.02E-10 0.16 0.00

Weight of pure Kukharenkoite-(La) in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.60 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
 

Kukharenkoite-(La) Classification

Help on  Dana Class: Dana Class: 16a.01.08.03 (16a)Carbonates - Hydroxyl or Halogen
  (16a.01)in the Bastnasite/Shynchysite/Parasite Groups
  (16a.01.08)Dana Group
 
16a.01.08.01 Zhonghuacerite-(Ce) Ba2Ce(CO3)3F P 21/m 2/m
 
16a.01.08.02 Kukharenkoite-(Ce)! Ba2Ce(CO3)3F P 21/m 2/m
 
16a.01.08.03 Kukharenkoite-(La)! Ba2(La,Ce)(CO3)3F P 21/m 2/m
Help on  Strunz Class: Strunz Class: 05.BD.10 05 - CARBONATES (NITRATES)
  05.B - Carbonates with additional anions, without H2O
  05.BD -With rare-earth elements (REE)
 
05.BD.10 Kukharenkoite-(Ce)! Ba2Ce(CO3)3F P 21/m 2/m
 
05.BD.10 Zhonghuacerite-(Ce) Ba2Ce(CO3)3F P 21/m 2/m
 
05.BD.10 Kukharenkoite-(La)! Ba2(La,Ce)(CO3)3F P 21/m 2/m
 

Other Kukharenkoite-(La) Information

Help on References: References: NAME( CanMin, v 42, p 928) PHYS. PROP.(CanMin, v 42, p 928) OPTIC PROP.(CanMin, v 42, p 928)
Help on See Also: See Also: Links to other databases for Kukharenkoite-(La) :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

Search for Kukharenkoite-(La) using:

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

Visit our Advertisers for Kukharenkoite-(La) :

Ask about Kukharenkoite-(La) 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 Espaņol

Print or Cut-and-Paste your Kukharenkoite-(La) Specimen Label here :

Kukharenkoite-(La)

Ba2(La,Ce)(CO3)3F
Dana No: 16a.01.08.03 Strunz No: 05.BD.10
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.