Carbokentbrooksite Mineral Data


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General Carbokentbrooksite Information
Help on Chemical Formula: Chemical Formula: (Na,[ ])12(Na,Ce)3Ca6Mn3Zr3Nb(Si25O73)(OH)3(CO3)·H2O
Help on Composition: Composition: Molecular Weight = 3,121.55 gm
   Potassium       0.45 %  K     0.54 % K2O
   Sodium          8.01 %  Na   10.79 % Na2O
   Strontium       1.26 %  Sr    1.49 % SrO
   Calcium         8.04 %  Ca   11.25 % CaO
   Lanthanum       1.60 %  La    1.88 % La2O3
   Cerium          2.69 %  Ce    3.15 % Ce2O3
   Praeseodymium   0.23 %  Pr    0.26 % Pr2O3
   Yttrium         0.37 %  Y     0.47 % Y2O3
   Zirconium       8.68 %  Zr   11.72 % ZrO2
   Titanium        0.26 %  Ti    0.44 % TiO2
   Manganese       0.97 %  Mn    1.25 % MnO
   Niobium         2.62 %  Nb    3.75 % Nb2O5
   Silicon        22.59 %  Si   48.33 % SiO2
   Hydrogen        0.14 %  H     1.25 % H2O
   Carbon          0.23 %  C     0.83 % CO2
   Neodymium       0.69 %  Nd    0.81 % Nd2O3
   Chlorine        0.31 %  Cl    0.31 % Cl
                    -   %   Cl   -0.07 % -O=Cl2
   Oxygen         40.87 %  O
                 ______        ______ 
                 100.00 %       98.46 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na9.48Ca0.94K0.36Na1.39Sr0.45Ce0.6La0.36Nd0.15Pr0.05Ca5.32Mn2+0.55Y0.13Zr2.97Nb0.88 Ti0.17Si25.11O73.62(OH)4.34Cl0.27(CO3)0.59
Help on Environment: Environment: From the quartz core of a zoned pegmatite. Forms the core of a zoned crystal with zirsilite-(Ce) rim. Eudialyte group; structure determined
Help on IMA Status: IMA Status: Approved IMA 2003 (Dana # Added)
Help on Locality: Locality: Dara-i-Pioz alkaline massif, Tajikistan. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for it's relationship to kentbrooksite.
Help on Synonym: Synonym: IMA2002-056
 

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Carbokentbrooksite Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:2.10962
Help on Cell Dimensions: Cell Dimensions: a = 14.239, c = 30.039, Z = 3; V = 5,274.43 Den(Calc)= 2.95
Help on Crystal System: Crystal System: Trigonal - Ditrigonal PyramidalH-M Symbol (3m) Space Group: R 3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.849(1)(044), 2.97(0.83)(135), 3.204(0.38)(028),3.155(0.35)(127), 3.019(0.34)(042), 2.59(0.3)(.39), 6.39(0.25)(014), 4.3(0.24)(025), 2.134(0.23),
 

Physical Properties of Carbokentbrooksite

Help on Cleavage: Cleavage: None
Help on Color: Color: Yellow.
Help on Density: Density: 3.14
Help on Diaphaniety: Diaphaniety: Transparent
Help on Fracture: Fracture: Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Help on Habit: Habit: Rhombohedral Crystals - Occurs as well-formed crystals showing rhobohedral crystals.
Help on Hardness: Hardness: 5 - Apatite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Carbokentbrooksite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.002 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.067 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2169,KPDmeas= 0.2038,KC= 0.2034
Help on Optical Data: Optical Data: Uniaxial (-), e=1.635, w=1.645, bire=0.0100.
 

Calculated Properties of Carbokentbrooksite

Help on Electron Density: Electron Density:

relectron=3.05 gm/cc
note: rCarbokentbrooksite =3.14 gm/cc.
Help on Fermion Index Fermion Index Fermion Index = 0.02327
Boson Index = 0.97673
Help on Photoelectric: Photoelectric:

PECarbokentbrooksite = 44.32 barns/electron
U=PECarbokentbrooksite x relectron= 135.10 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 5,405.71 (Gamma Ray American Petroleum Institute Units)

Carbokentbrooksite is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram.

Estimated Radioactivity from Carbokentbrooksite - mild
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 / 8.47 cm 116,929 3.16E-06 5,405.71 1.78
100 gm / 3.93 cm 11,693 3.16E-07 540.57 0.18
10 gm / 1.83 cm 1,169 3.16E-08 54.06 0.02
1 gm / 8.47 mm 117 3.16E-09 5.41 0.00
0.1 gm / 3.93 mm 12 3.16E-10 0.54 0.00
0.01 gm / 1.83 mm 1 3.16E-11 0.05 0.00
0.001 gm / 0.85 mm 0 3.16E-12 0.01 0.00

Weight of pure Carbokentbrooksite in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.14 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 ( 0.26 % Th) From Sum REE Elements ( 5.21 % REE)
 

Carbokentbrooksite Classification
Help on Dana Class: Dana Class: 64.1.1.12 (64)Cyclosilicate Rings with Other Anions and Insular Silicate Groups
  (64.1)with mixed ring types
  (64.1.1)Eudialyte Group
 
64.1.1.1 Eudialyte Na4(Ca,Ce)2(Fe,Mn,Y)ZrSi8O22(OH,Cl)2(?) R 3m 3 2/m
 
64.1.1.2 Alluaivite Na19(Ca,Mn)6(Ti,Nb)3(Si3O9)2(Si10O28)2Cl·2(H2O) R 3m 3 2/m
 
64.1.1.3 Kentbrooksite! (Na,REE)15(Ca,REE)6MnZr3NbSi25O74F2·2(H2O) R 3m 3m
 
64.1.1.4 Khomyakovite! Na12Sr3Ca6Fe3Zr3W(Si25O73)(O,OH,H2O)3(OH,Cl)2 R 3m 3m
 
64.1.1.5 Manganokhomyakovite! Na12Sr3Ca6Mn3Zr3W(Si25O73)(O,OH,H2O)3(OH,Cl)2 R 3m 3m
 
64.1.1.6 Oneillite! Na15Ca3Mn3Fe3Zr3Nb(Si25O73)(O,OH,H2O)3(OH,Cl)2 R 3 3
 
64.1.1.7 Ferrokentbrooksite! Na15Ca6(Fe,Mn)3Zr3NbSi25O73(O,OH,H2O)3(Cl,F,OH)2 R 3m 3m
 
64.1.1.8 Ikranite! (Na,H3O)15(Ca,Mn,REE)6Fe2Zr3([],Zr)([],Si)Si24O66(O,OH)6Cl·2-3H2O R 3m 3m
 
64.1.1.9 Feklichevite! Na11Ca9(Fe,Fe)2Zr3Nb[Si25O73](OH,H2O,Cl,O)5 R 3m 3m
 
64.1.1.10 Rastsvetaevite! Na27K8Ca12Fe3Zr6Si52O144(O,OH,H2O)6Cl2 R 3m 3m
 
64.1.1.11 Taseqite! Na12Sr3Ca6Fe3Zr3NbSi25O73(O,OH,H2O)3Cl2 R 3m 3m
 
64.1.1.12 Carbokentbrooksite ! (Na,[])12(Na,Ce)3Ca6Mn3Zr3Nb(Si25O73)(OH)3(CO3)·H2O R 3m 3m
 
64.1.1.13 Zirsilite-(Ce)! (Na,[])12(Ce,Na)3Ca6Mn3Zr3Nb(Si25O73)(OH)3(CO3)·H2O R 3m 3m
 
64.1.1.14 Labyrinthite! (Na,K,Sr)35Ca12Fe3Zr6TiSi51O144(O,OH,H2O)9Cl3 R 3m 3m
 
64.1.1.15 Aqualite! (H3O)8(Na,K,Sr)5Ca6Zr3Si26O66(OH)9Cl R 3m 3m
 
64.1.1.16 Raslakite! Na15Ca3Fe3(Na,Zr)3Zr3(Si,Nb)(Si25O73)(OH,H2O)3(Cl,OH) R 3m 3m
 
64.1.1.17 Georgbarsanovite! Na12(Mn,Sr,REE)3Ca6Fe3Zr3NbSi25O76Cl2·H2O R 3m 3m
 
64.1.1.18 IMA2004-026! Na12(Ce,REE,Sr)3Ca6Mn3Zr3W(Si25O73)(OH)3(CO3)·H2O R 3m 3m
 
64.1.1.19 Mogovidite! Na9(Ca,Na)6Ca6Fe2Zr3[]Si25O72(CO3)(OH)4 R 3m 3m
Help on Strunz Class: Strunz Class: VIII/E.25-32 VIII - Silicates
  VIII/E - Cyklosilicates, triplet rings, nine-rings and ten-rings
  VIII/E.25 - Eudialyte - Alluaivite series
 
VIII/E.25-10 Eudialyte Na4(Ca,Ce)2(Fe,Mn,Y)ZrSi8O22(OH,Cl)2(?) R 3m 3 2/m
 
VIII/E.25-14 Ikranite! (Na,H3O)15(Ca,Mn,REE)6Fe2Zr3([],Zr)([],Si)Si24O66(O,OH)6Cl·2-3H2O R 3m 3m
 
VIII/E.25-16 Raslakite! Na15Ca3Fe3(Na,Zr)3Zr3(Si,Nb)(Si25O73)(OH,H2O)3(Cl,OH) R 3m 3m
 
VIII/E.25-20 Ferrokentbrooksite! Na15Ca6(Fe,Mn)3Zr3NbSi25O73(O,OH,H2O)3(Cl,F,OH)2 R 3m 3m
 
VIII/E.25-30 Kentbrooksite! (Na,REE)15(Ca,REE)6MnZr3NbSi25O74F2·2(H2O) R 3m 3m
 
VIII/E.25-32 Carbokentbrooksite (Na,[])12(Na,Ce)3Ca6Mn3Zr3Nb(Si25O73)(OH)3(CO3)·H2O R 3m 3m
 
VIII/E.25-40 Oneillite! Na15Ca3Mn3Fe3Zr3Nb(Si25O73)(O,OH,H2O)3(OH,Cl)2 R 3 3
 
VIII/E.25-50 Feklichevite! Na11Ca9(Fe,Fe)2Zr3Nb[Si25O73](OH,H2O,Cl,O)5 R 3m 3m
 
VIII/E.25-56 Zirsilite-(Ce)! (Na,[])12(Ce,Na)3Ca6Mn3Zr3Nb(Si25O73)(OH)3(CO3)·H2O R 3m 3m
 
VIII/E.25-58 Taseqite! Na12Sr3Ca6Fe3Zr3NbSi25O73(O,OH,H2O)3Cl2 R 3m 3m
 
VIII/E.25-60 Khomyakovite! Na12Sr3Ca6Fe3Zr3W(Si25O73)(O,OH,H2O)3(OH,Cl)2 R 3m 3m
 
VIII/E.25-70 Manganokhomyakovite! Na12Sr3Ca6Mn3Zr3W(Si25O73)(O,OH,H2O)3(OH,Cl)2 R 3m 3m
 
VIII/E.25-80 Alluaivite Na19(Ca,Mn)6(Ti,Nb)3(Si3O9)2(Si10O28)2Cl·2(H2O) R 3m 3 2/m
 

Other Carbokentbrooksite Information
Help on References: References: NAME( CanMin, v 42, p 922) PHYS. PROP.(CanMin, v 42, p 922) OPTIC PROP.(CanMin, v 42, p 922)
Help on See Also: See Also: Links to other databases for Carbokentbrooksite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -MinDAT 6 -MinMax(Deutsch) 7 -MinMax(English) 8 -Mineralienatlas (Deutsch) 9 -QUT Mineral Atlas

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Carbokentbrooksite

(Na,[ ])12(Na,Ce)3Ca6Mn3Zr3Nb(Si25O73)(OH)3(CO3)·H2O
Dana No: 64.1.1.12 Strunz No: VIII/E.25-32
Locality:

 

Notes:

 
 
   
 
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