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UM2003-39-SiO:CaClFeHHfNaNbSrTaTiZr

Collectors Summary

Crystal System trigonal, R3m

Chemism

Chem­ical formula

Na12(Na,K,Mn,Sr)2Ca5(Ca,Mn)(Zr,Hf)3(Fe,◻,Ta)3(Si,Nb,W)(Si,Al,Ti)Si24O72(OH,O)3.5Cl · 1.2H2O

Chem­ical com­po­si­tion

Aluminium, Calcium, Chlor, Eisen, Hafnium, Mangan, Natrium, Niob, Silicium, Strontium, Tantal, Titan, Zirconium, Kalium, Sauerstoff, Wasserstoff, Wolfram

Unit weight: 3199.04351481 u; Number of atoms in the formula: 133.725

Info

Empirical formula:

Na12(Na0.55K0.3Mn0.1Sr0.05)2Ca5(Ca0.75Mn0.25)(Zr0.75Hf0.25)3(Fe,◻,Ta)3(Si0.6Nb0.3W0.1)(Si0.6Al0.3Ti0.1)Si24O72((OH)0.75O0.25)3.5Cl·1.2H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.16

5.03

3.76

1.0079470

5.0649337

Oxygen

O

38.36

76.7

57.36

15.9994300

1,227.1562810

Sodium

Na

9.41

13.1

9.80

22.9897702

301.1659896

Aluminium

Al

0.25

0.3

0.22

26.9815382

8.0944615

Silicon

Si

22.12

25.2

18.84

28.0855300

707.7553560

Chlorine

Cl

1.11

1

0.75

35.4532000

35.4532000

Potassium

K

0.73

0.6

0.45

39.0983100

23.4589860

Calcium

Ca

7.20

5.75

4.30

40.0784000

230.4508000

Titanium

Ti

0.15

0.1

0.07

47.8671000

4.7867100

Manganese

Mn

0.77

0.45

0.34

54.9380499

24.7221225

Iron

Fe

1.75

1

0.75

55.8452000

55.8452000

Strontium

Sr

0.27

0.1

0.07

87.6210000

8.7621000

Zirconium

Zr

6.42

2.25

1.68

91.2242000

205.2544500

Niobium

Nb

0.87

0.3

0.22

92.9063820

27.8719146

Hafnium

Hf

4.18

0.75

0.56

178.4920000

133.8690000

Tantalum

Ta

5.66

1

0.75

180.9479100

180.9479100

Tungsten

W

0.57

0.1

0.07

183.8410000

18.3841000

Strunz 9th edi­tion incl. updates

9.CO.10

9: Silikate (Germanate)
C: Ringsilikate (Cyclosilikate)
O: ~[Si9O27]18- neuner-Ringe
10:Eudialyt-Gruppe

Min­eral sta­tus

unbenannt gültig

IMA Classification

IMA Clas­sifica­tion

Eudialyte group

Crystallography

Crystal Sys­tem

trigonal

Class (H-M)

3m

Space Group number

160

Space Group

R3m

Cell param­e­ters b (Å)

-

Cell param­e­ters c/b

-

References

Dorian G.W. Smith & Ernest H. Nickel (2007) A System of Codification for Unnamed Minerals: Report of the SubCommittee for Unnamed Minerals of the IMA Commission on New Minerals, Nomenclature and Classification. Canadian Mineralogist v. 45, p.983-1055

IMA group assignments

CNMNC (IMA)-Number

UM2003-39-SiO:CaClFeHHfNaNbSrTaTiZr

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