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UM1990-78-SiO:CaClFeHKNaZr (UM1990-78)

Collectors Summary

Crystal System trigonal, R3m

Chemism

Chemical formula

(H3O)7(Na,K)5(Ca,Sr,Mn)6Zr3[Si3O7(O,OH)2]2[Si9O23(O,OH)4]2[SiNaFe(Zr,Ti,Al,Nb)◻]Cl1.5(O,OH)

Chemical composition

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

Unit weight: 2954.14704356 u; Number of atoms in the formula: 147.75

Info

Empirical formula:

(H3O)7(Na0.75K0.25)5(Ca0.6Sr0.3Mn0.1)6Zr3[Si3O7(O0.75(OH)0.25)2]2[Si9O23(O0.75(OH)0.25)4]2[SiNaFe(Zr0.55Ti0.3Al0.1Nb0.05)◻]Cl1.5(O0.75(OH)0.25)

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.83

24.25

16.41

1.0079470

24.4427148

Oxygen

O

43.33

80

54.15

15.9994300

1,279.9544000

Sodium

Na

3.70

4.75

3.21

22.9897702

109.2014085

Aluminium

Al

0.09

0.1

0.07

26.9815382

2.6981538

Silicon

Si

23.77

25

16.92

28.0855300

702.1382500

Chlorine

Cl

1.80

1.5

1.02

35.4532000

53.1798000

Potassium

K

1.65

1.25

0.85

39.0983100

48.8728875

Calcium

Ca

4.88

3.6

2.44

40.0784000

144.2822400

Titanium

Ti

0.49

0.3

0.20

47.8671000

14.3601300

Manganese

Mn

1.12

0.6

0.41

54.9380499

32.9628299

Iron

Fe

1.89

1

0.68

55.8452000

55.8452000

Strontium

Sr

5.34

1.8

1.22

87.6210000

157.7178000

Zirconium

Zr

10.96

3.55

2.40

91.2242000

323.8459100

Niobium

Nb

0.16

0.05

0.03

92.9063820

4.6453191

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

Alternative Name

UM1990-78

Unnamed (potassium oxonium eudialyte)

CNMNC (IMA)-Number

UM1990-78-SiO:CaClFeHKNaZr

IDs

GUSID (Global unique identifier short form) Tpt6lvoujkOwws0gHkOEcw
GUID (Global unique identifier) 967A9B4E-2EFA-438E-B0C2-CD201E438473
Database ID 6076