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Karnasurtite-(Ce) Mineral Data

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General Karnasurtite-(Ce) Information

Help on Chemical  Formula: Chemical Formula: (Ce,La,Th)(Ti,Nb)(Al,Fe+++)(Si,P)2O7(OH)4•3(H2O) (?)
Help on Composition: Composition: Molecular Weight = 450.31 gm
   Sodium       0.77 %  Na    1.03 % Na2O
   Lanthanum    4.32 %  La    5.06 % La2O3
   Cerium      16.80 %  Ce   19.68 % Ce2O3
   Thorium      6.18 %  Th    7.04 % ThO2
   Magnesium    0.59 %  Mg    0.98 % MgO
   Titanium     8.08 %  Ti   13.48 % TiO2
   Niobium      6.40 %  Nb    9.15 % Nb2O5
   Aluminum     4.37 %  Al    8.26 % Al2O3
   Iron         1.24 %  Fe    1.60 % FeO
   Silicon     10.60 %  Si   22.68 % SiO2
   Phosphorus   1.58 %  P     3.62 % P2O5
   Hydrogen     0.78 %  H     7.00 % H2O
   Oxygen      37.31 %  O
   Fluorine     0.97 %  F     0.97 % F
                 -   %   F    -0.41 % -O=F2    
              ______        ______ 
              100.00 %      102.97 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ce0.54Na0.15La0.14Th0.12Ti0.76Nb0.31Al0.73Mg0.11Fe2+0.1Si1.7P0.23O7(OH)3.5F0.23
Help on Environment: Environment: Zoned pegmatitic stock associated with other alkalic minerals.
Help on IMA Status: IMA Status: Approved IMA 1959
Help on Locality: Locality: Vein No. 2, Mt. Karnasurt, Lovozero massif, Kola Peninsula, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Name Pronunciation: Name Pronunciation: Karnasurtite-(Ce) + Pronunciation Say KARNASURTITE-(CE)
 

Karnasurtite-(Ce) Image

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  Karnasurtite-(Ce)

Comments: Tabular, hexagonal crystals of light-yellow karnasurtite-(Ce) associated with light-lilac porcelaneous polylithionite and black dendrites of a cryptomelane group mineral.
Location: Hackmanite Stock (Pegmatite No. 62), Karnasurt Mt, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia. Scale: Specimen Size is 5.5x5x2 cm.
© Pavel M. Kartashov

Karnasurtite-(Ce) Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:0.68867
Help on Cell Dimensions: Cell Dimensions: a = 10.6, c = 7.3, Z = 3; V = 710.34 Den(Calc)= 3.16
Help on Crystal System: Crystal System: Hexagonal Space Group: Unk.
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.88(0.7), 3.1(0.7), 3.29(0.6),
 

Physical Properties of Karnasurtite-(Ce)

Help on Cleavage: Cleavage: {???} Good
Help on Color: Color: Yellow, Honey, Light yellow.
Help on Density: Density: 2.89 - 2.95, Average = 2.92
Help on Diaphaneity: Diaphaneity: Semitransparent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Metamict - Mineral originally crystalline, now amorphous due to radiation damage.
Help on Hardness: Hardness: 2 - Gypsum
Help on Luster: Luster: Greasy (Oily)
Help on Streak: Streak: light yellow
 

Optical Properties of Karnasurtite-(Ce)

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.087 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.156 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1918,KPDmeas= 0.2075,KC= 0.2272
Ncalc = 1.66 - 1.72
Help on Optical Data: Optical Data: Uniaxial (-), e=1.595, w=1.617, bire=0.0220.
 

Calculated Properties of Karnasurtite-(Ce)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.74 gm/cc
note: Specific Gravity of Karnasurtite-(Ce) =2.92 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEKarnasurtite-(Ce) = 253.00 barns/electron
U=PEKarnasurtite-(Ce) x relectron= 693.66 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 123,861.88 (Gamma Ray American Petroleum Institute Units)
Concentration of Karnasurtite-(Ce) per GRapi unit = 8.07 (PPM)

Karnasurtite-(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) 245.57 ± 61.39 grams of pure Karnasurtite-(Ce) .

Estimated Radioactivity from Karnasurtite-(Ce) - 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 / 8.68 cm 2,770,193 7.49E-05 123,861.88 40.72
100 gm / 4.03 cm 277,019 7.49E-06 12,386.19 4.07
10 gm / 1.87 cm 27,702 7.49E-07 1,238.62 0.41
1 gm / 8.68 mm 2,770 7.49E-08 123.86 0.04
0.1 gm / 4.03 mm 277 7.49E-09 12.39 0.00
0.01 gm / 1.87 mm 28 7.49E-10 1.24 0.00
0.001 gm / 0.87 mm 3 7.49E-11 0.12 0.00

Weight of pure Karnasurtite-(Ce) in grams (gm) and Calculated Diameter of a Sphere with a Density of 2.92 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
 

Karnasurtite-(Ce) Classification

Help on  Dana Class: Dana Class: 52.04.09.07 (52)Nesosilicate Insular SiO4 Groups and O, OH, F, and H2O
  (52.04)with cations in [6] and/or > [6] coordination
  (52.04.09)Silicate apatites
 
52.04.09.00 Ellestadite* Ca5(SiO4,PO4,SO4)3(F,OH,Cl) P 63/m 6/m
 
52.04.09.01 Britholite-(Ce) (Ce,Ca,Th,La,Nd)5(SiO4,PO4)3(OH,F) P 63/m 6/m
 
52.04.09.02 Britholite-(Y) (Y,Ca)5(SiO4,PO4)3(OH,F) P 63/m 6/m
 
52.04.09.03 Ellestadite-(F) Ca5(SiO4,PO4,SO4)3(F,OH,Cl) P 63/m 6/m
 
52.04.09.04 Ellestadite-(OH) Ca5(SiO4,SO4)3(OH,Cl,F) P 63/m 6/m
 
52.04.09.05 Ellestadite-(Cl) Ca5(SiO4,PO4,SO4)3(Cl,OH,F) P 63/m 6/m
 
52.04.09.06 Mattheddleite Pb20(SiO4)7(SO4)4Cl4 P 63/m 6/m
 
52.04.09.07 Karnasurtite-(Ce) (Ce,La,Th)(Ti,Nb)(Al,Fe)(Si,P)2O7(OH)4•3(H2O)(?) Unk. Hex
 
52.04.09.08 Fluorbritholite-(Ce) (Ca,Ce,La,Na)5(SiO4,PO4)3(OH,F) P 63/m 6/m
 
52.04.09.09 Fluorcalciobritholite! (Ca,REE)5[(Si,P)O4]3F P 63/m 6/m
Help on  Strunz Class: Strunz Class: 09.BE.70 09 - SILICATES (Germanates)
  09.B - Sorosilicates
  09.BE -Si2O7 groups with additional anions;
 
09.BE.70 Chevkinite-(Ce) (Ce,La,Ca,Th)4(Fe,Mg)2(Ti,Fe)3Si4O22 C 2/m 2/m
 
09.BE.70 Karnasurtite-(Ce) (Ce,La,Th)(Ti,Nb)(Al,Fe)(Si,P)2O7(OH)4•3(H2O)(?) Unk. Hex
 
09.BE.70 Perrierite-(Ce) (Ce,La,Ca)4(Fe,Mg)2(Ti,Fe)3Si4O22 C 21/a 2/m
 
09.BE.70 Strontiochevkinite (Sr,REE)4Fe(Ti,Zr)2Ti2Si4O22 C 2/a 2/m
 
09.BE.70 Rengeite! Sr4ZrTi4Si4O22 P 21/a 2/m
 
09.BE.70 Maoniupingite-(Ce)! (REE,Ca)4(Fe,Ti,Fe,[])(Ti,Fe,Fe,Nb)4Si4O22 C 2/m 2/m
 
09.BE.70 Matsubaraite! Sr4TiTi4Si4O22 P 21/a 2/m
 
09.BE.70 Polyakovite-(Ce)! (Ce,La,Nd,Pr,Ca)4(Mg,Fe)(Cr,Fe)2(Ti,Nb)2Si4O22 C 2/m 2/m
 
09.BE.70 Dingdaohengite-(Ce)! (Ce,La)4Fe(Ti,Fe,Mg,Fe)2Ti2Si4O22 P 21/a (pseudo-C 2/m) 2/m
 

Other Karnasurtite-(Ce) Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Karnasurtite-(Ce) :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - GeoScienceWorld
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info

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Print or Cut-and-Paste your Karnasurtite-(Ce) Specimen Label here :

Karnasurtite-(Ce)

(Ce,La,Th)(Ti,Nb)(Al,Fe+++)(Si,P)2O7(OH)4•3(H2O) (?)
Dana No: 52.04.09.07 Strunz No: 09.BE.70
Locality:

 

Notes:

 

 
   
 


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