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UM2000-66-SiO:CaClFeHMnNaNbSrZr (Fe- and Sr-rich eudialyte)

Collectors Summary

Crystal System trigonal, R3m

Chemism

Chemical formula

Na12(Ca,Mn)6(Sr,Na,K)3(Fe,Mn)3(Zr,Nb)4Si25O66(OH,Cl)11

Chemical composition

Calcium, Chlor, Eisen, Mangan, Natrium, Niob, Silicium, Strontium, Zirconium, Kalium, Sauerstoff, Wasserstoff

Unit weight: 3258.117213105 u; Number of atoms in the formula: 138.25

Info

Empirical formula:

Na12(Ca0.75Mn0.25)6(Sr0.6Na0.3K0.1)3(Fe0.75Mn0.25)3(Zr0.75Nb0.25)4Si25O66((OH)0.75Cl0.25)11

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

0.26

8.25

5.97

1.0079470

8.3155628
Oxygen

O

36.46

74.25

53.71

15.9994300

1,187.9576775
Sodium

Na

9.10

12.9

9.33

22.9897702

296.5680356
Silicon

Si

21.55

25

18.08

28.0855300

702.1382500
Chlorine

Cl

2.99

2.75

1.99

35.4532000

97.4963000
Potassium

K

0.36

0.3

0.22

39.0983100

11.7294930
Calcium

Ca

5.54

4.5

3.25

40.0784000

180.3528000
Manganese

Mn

3.79

2.25

1.63

54.9380499

123.6106123
Iron

Fe

3.86

2.25

1.63

55.8452000

125.6517000
Strontium

Sr

4.84

1.8

1.30

87.6210000

157.7178000
Zirconium

Zr

8.40

3

2.17

91.2242000

273.6726000
Niobium

Nb

2.85

1

0.72

92.9063820

92.9063820

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 a (Å)

14.2.4.5

Cell parameters b (Å)

-

Cell parameters c (Å)

29.959

Cell parameters a/b or c/a

2.11

Cell parameters c/b

-

Z

3

Volume (ų)

5231.601

Physical Properties

Density (g/cm³)

3.102 ( ρ calc. Mineralienatlas )

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

Alternative Name

Fe- and Sr-rich eudialyte

UM2000-66

CNMNC (IMA)-Number

UM2000-66-SiO:CaClFeHMnNaNbSrZr

IDs

GUSID (Global unique identifier short form) y7SSEd5As0eK6kginjHYWQ
GUID (Global unique identifier) 1192B4CB-40DE-47B3-8AEA-48229E31D859
Database ID 6477