IMA2004-026 Mineral Data

IMA2004-026 Mineral Data

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General IMA2004-026 Information

Chemical Formula:

Na12(Ce,REE,Sr)3Ca6Mn3Zr3W(Si25O73)(OH)3(CO3)·H2O

Composition:

Molecular Weight = 3,545.91 gm

Sodium 7.78 % Na 10.49 % Na₂O

Strontium 0.74 % Sr 0.88 % SrO

Calcium 6.78 % Ca 9.49 % CaO

Cerium 7.11 % Ce 8.33 % Ce₂O₃

La,Ce,Pr,Nd,Sm, 3.65 % RE 4.26 % REE₂O₃

Zirconium 7.72 % Zr 10.43 % ZrO₂

Manganese 4.65 % Mn 6.00 % MnO

Silicon 19.80 % Si 42.36 % SiO₂

Hydrogen 0.14 % H 1.27 % H₂O

Tungsten 5.18 % W 6.09 % WO₂

Carbon 0.34 % C 1.24 % CO₂

Oxygen 36.10 % O

______ ______

100.00 % 100.83 % = TOTAL OXIDE

Empirical Formula:

Na₁₂Ce_1.8REE_0.9Sr_0.3Ca₆Mn²⁺₃Zr₃WSi₂₅O₇₃(OH)₃(CO₃)·(H₂O)

Environment:

Eudialyte group

IMA Status:

Proposed IMA 2004 (Dana # Added)

Locality:

Poudrette Quarry, Mont Saint-Hilaire, Rouville County, Quebec, Canada Link to MinDat.org Location Data.

Name Origin:

Commission on New Minerals and Mineral Names (CNMMN)

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IMA2004-026 Crystallography

Axial Ratios:

a:c = 1:2.10962

Cell Dimensions:

a = 14.249, c = 30.06, Z = 3; V = 5,285.53 Den(Calc)= 3.34

Crystal System:

Trigonal - Ditrigonal PyramidalH-M Symbol (3m) Space Group: R 3m

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

By Intensity(I/I_o): 2.968(1), 11.308(0.95), 2.849(0.81),9.46(0.81), 3.167(0.75), 3.395(0.38), 3.547(0.36), 3.363(0.32),

Optical Properties of IMA2004-026

Optical Data:

NCalc= 1.63 - from Gladstone-Dale relationship (KC = 0.1875) where Ncalc=Dcalc*KC+1

Calculated Properties of IMA2004-026

Electron Density:

r_electron=3.19 gm/cc
note: r_IMA2004-026=3.34 gm/cc.

Fermion Index

Fermion Index = 0.03293
Boson Index = 0.96707

Photoelectric:

PE_IMA2004-026= 128.87 barns/electron
U=PE_IMA2004-026 x r_electron= 410.95 barns/cc.

Radioactivity:

GRapi = 10,978.78 (Gamma Ray American Petroleum Institute Units)

IMA2004-026 is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram.

**Estimated Radioactivity from IMA2004-026** - 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 / 8.30 cm	241,486	6.53E-06	10,978.78	3.61
100 gm / 3.85 cm	24,149	6.53E-07	1,097.88	0.36
10 gm / 1.79 cm	2,415	6.53E-08	109.79	0.04
1 gm / 8.30 mm	241	6.53E-09	10.98	0.00
0.1 gm / 3.85 mm	24	6.53E-10	1.10	0.00
0.01 gm / 1.79 mm	2	6.53E-11	0.11	0.00
0.001 gm / 0.83 mm	0	6.53E-12	0.01	0.00

Weight of pure IMA2004-026 in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.34 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 ( 0.54 % Th) From Sum REE Elements (10.77 % REE)

IMA2004-026 Classification

Dana Class:

64.1.1.18 (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

Strunz Class:

VIII/EX.00-00 VIII - Silicates

VIII/EX - Unclassified Strunz Cyklosilicates

VIII/EX.00 - Eudialyte group

Other IMA2004-026 Information

See Also:

Links to other databases for IMA2004-026 :
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)

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IMA2004-026

Na12(Ce,REE,Sr)3Ca6Mn3Zr3W(Si25O73)(OH)3(CO3)·H2O
Dana No: 64.1.1.18 Strunz No: VIII/EX.00-00
Locality:

Notes: