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Siudaite

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Siudait
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Siudait
orangebraunes Aggregat von Siudait, Eveslogchorr, Chibiny Massiv, Murmansk, Russland; BB ~ 1 mm, analysiert
Copyright: MinTreasure.com (Carsten Slotta); Contribution: openpit
Location: Russland/Nordwestrussland, Föderationskreis/Murmansk, Oblast/Kola-Halbinsel/Chibiny (Khibiny)/Eweslogchorr (Eveslogchorr)
Mineral: Siudaite
Image: 1584798420
License: Usage for Mineralienatlas project only
Siudait

orangebraunes Aggregat von Siudait, Eveslogchorr, Chibiny Massiv, Murmansk, Russland; BB 1 mm, analysiert

Copyright: MinTreasure.com (Carsten Slotta)
Contribution: openpit 2020-03-21
Locality: Eweslogchorr (Eveslogchorr) / Chibiny (Khibiny) / Kola-Halbinsel / Murmansk, Oblast / Nordwestrussland, Föderationskreis / Russland

Collectors Summary

Color gelb, braungelb
Streak color weiß
Lustre Glasglanz
Hardness (Mohs) 4.5
Cleavages keine festgestellt
Crystal System trigonal, R3m
Morphology Anhedrale Körner bis zu 1,5 cm Durchmesser

Chemism

Chemical formula

Na8Mn2+3Ca6(Fe3+,Mn2+)3Zr3NbSi24(Si,☐,Ti)O72(O,OH)3Cl·4H2O

Empirical formula (analysis)

[Na7.57(H2O)1.43]Σ9 (Mn1.11Na0.88Ce0.31La0.20Nd0.05Pr0.04K0.41)Σ3(H2O)1.8(Ca5.46Mn0.54)Σ6 (Fe3+1.76Mn2+1.19)Σ2.95 Nb0.65(Ti0.20Si0.50)Σ0.71(Zr2.95Hf0.04Ti0.01)Σ3Si24.00Cl0.47O70(OH)2Cl0.47·1.82H2O

Additional chem. information

Chemisch verwandt mit Georgbarsanovit

Chemical composition

Calcium, Chlor, Eisen, Mangan, Natrium, Niob, Silicium, Titan, Zirconium, Sauerstoff, Wasserstoff, Vakanz

Unit weight: 3080.565136586 u; Number of atoms in the formula: 137.96

Info

Empirical formula:

[Na7.57(H2O)1.43](Mn1.11Na0.88Ce0.31La0.20Nd0.05Pr0.04K0.41)(H2O)1.8(Ca5.46Mn0.54)(Fe1.76Mn1.19)Nb0.65(Ti0.20Si0.50)(Zr2.95Hf0.04Ti0.01)Si24.00Cl0.47O70(OH)2Cl0.47·1.82H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.40

12.1

8.77

1.0079470

12.1961587

Oxygen

O

40.02

77.05

55.85

15.9994300

1,232.7560815

Sodium

Na

6.31

8.45

6.12

22.9897702

194.2635582

Silicon

Si

22.34

24.5

17.76

28.0855300

688.0954850

Chlorine

Cl

1.08

0.94

0.68

35.4532000

33.3260080

Potassium

K

0.52

0.41

0.30

39.0983100

16.0303071

Calcium

Ca

7.10

5.46

3.96

40.0784000

218.8280640

Titanium

Ti

0.33

0.21

0.15

47.8671000

10.0520910

Manganese

Mn

5.06

2.84

2.06

54.9380499

156.0240617

Iron

Fe

3.19

1.76

1.28

55.8452000

98.2875520

Zirconium

Zr

8.74

2.95

2.14

91.2242000

269.1113900

Niobium

Nb

1.96

0.65

0.47

92.9063820

60.3891483

Lanthanum

La

0.90

0.2

0.14

138.9055200

27.7811040

Cerium

Ce

1.41

0.31

0.22

140.1161000

43.4359910

Praseodymium

Pr

0.18

0.04

0.03

140.9076520

5.6363061

Neodymium

Nd

0.23

0.05

0.04

144.2430000

7.2121500

Hafnium

Hf

0.23

0.04

0.03

178.4920000

7.1396800

Analysis wt%

Na2O 8.40,
K2O 0.62,
CaO 9.81,
La2O3 1.03,
Ce2O3 1.62,
Pr2O3 0.21,
Nd2O3 0.29,
MnO 6.45,
Fe2O3 4.51,
TiO2 0.54,
ZrO2 11.67,
HfO2 0.29,
Nb2O5 2.76,
SiO2 47.20,
Cl 0.54,
H2O 3.5,
-O= Cl -0.12,
Total 99.32.

Strunz 9th edition incl. updates

9.CO.10

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

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

Eudialyte group

Optical Properties

Color

gelb, braungelb

Streak color

weiß

Diaphaneity (Transparency)

kirschrot wenn oxidiert

Lustre

Glasglanz

max. Birefringence

0.009

Birefringence chart\! Siudaite title=Birefringence chart Siudaite

Michel-Levy Color Chart viewed according to the maximum birefringence (at 30μm). Mineral color is not taken into account. Click on the image to enlarge or change thickness.

RI value α / ω / n

ω = 1.635(1)

RI value γ / ε

ε = 1.626(1)

2V angle

Uniaxial(-)

Pleochroism

keiner

Crystallography

Crystal System

trigonal

Class (H-M)

3m

Space Group number

160

Space Group

R3m

Cell parameters a (Å)

14.1885(26)

Cell parameters b (Å)

-

Cell parameters c (Å)

29.831(7)

Cell parameters a/b or c/a

2.102

Cell parameters c/b

-

Z

3

Volume (ų)

5200.815

Crystal structure

Struktur bestimmt

X-Ray Powder Diffraction

6.38(60),
4.29(55),
3.389(47),
3.191(63),
2.963(100),
2.843(99),
2.577(49)

XRD chart Siudaite

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Morphology

Anhedrale Körner bis zu 1,5 cm Durchmesser

Physical Properties

Hardness (Mohs)

4.5

Density (g/cm³)

2.96 (gemessen), 2.973 (berechnet)

2.951 ( ρ calc. Mineralienatlas )

Cleavages

keine festgestellt

(Co-)Type locality

(Co-)Type locality

Russland/Nordwestrussland, Föderationskreis/Murmansk, Oblast/Kola-Halbinsel/Chibiny (Khibiny)/Eweslogchorr (Eveslogchorr)

Type material

Typmaterial wird in der Sammlung der Mineralogischen und Petrologischen Sektion , Museum of Earth PAS (Muzeum Ziemi Polskiej Akademii Nauk), aleja Na Skarpie 20/26, PL-00-488 Warsaw, Poland, Katalognummer MZI III/1/541 gelagert.

Paragenesis of type material

Aegirin, Albit, Mikroklin, Nephelin, Astrophyllit, Loparit-(Ce)

Preface

Name from

Siudaite ist nach dem polnischen Mineralogen und Geochemiker Rafał Siuda (Geb. 1975) benannt.

Author (Name, Year)

Britvin, S.N. and Vozchikova, S.A. (2018)

References

Chukanov, N.V., Rastsvetaeva, R.K., Kruszewski, L., Aksenov, S.M., Rusakov, V.S., Britvin, S.N., Vozchikova, S.A. (2018): Siudaite, Na8(Mn2+2Na)Ca6Fe3+3Zr3NbSi25O74(OH)2Cl·5H2O: a new eudialyte-group mineral from the Khibiny alkaline massif, Kola Peninsula. Physics and Chemistry of Minerals, 45, (in press).

https://doi.org/10.1007/s00269-018-0959-9

Britvin, S.N. and Vozchikova, S.A. (2018) Siudaite, IMA 2017-092. CNMNC Newsletter No. 41, February 2018, page xxx; Mineralogical Magazine, 82, xxx-xxx

IMA group assignments


 
 
Na15[(Ce1.5Na1.5)Mn3]Mn2Zr3☐Si[Si24O69(OH)3](OH)2·H2O
trigonal
R3

 
 
(H3O)8(Na, K, Sr)5Ca6Zr3Si26O66(OH)9Cl
trigonal
R3

 
 
Na11-12(Na,Ce)3Ca6Mn3Zr3Nb[(OH)3|CO3|(Si3O9)2|(Si9O27)2·SiO]·H2O
trigonal
R3m

 
 
Na30(Ca,Na,Ce,Sr)12(Na,Mn,Fe,Ti)6Zr3Ti3MnSi51O144(OH,H2O,Cl)9
trigonal
R3m

 
 
Na15Ca6(Fe2+,Mn2+)3Zr3[(Cl,OH)|Si(O,OH,H2O)2|Si3O9|Si9O27]2
trigonal
R3m

 
 
Na11Ca9(Fe3+,Fe2+)2Zr3Nb(Si25O73)(OH,H2O,Cl,O)5
trigonal
R3m

 
 
Na15Ca6Fe2+3Zr3Nb(Si25O73)(O,OH,H2O)3(F,Cl)2
trigonal
R3m

 
 
Na12(Mn,Sr,REE)3Ca6Fe2+3Zr3NbSi25O76Cl2·H2O
trigonal
R3m

 
 
(Na,Ca)10Ca9Fe2Zr3NbSi25O72(OH)3CO3·H2O
trigonal
R3m

 
 
(Na,H3O)15(Ca,Mn)6Fe23+Zr3-4[Cl|{Si3O6(O,OH)3}2|(Si9O27)2·0-1 SiO] ·2-3 H2O
trigonal
R3m

 
 
(H3O,Na)14Ca6Mn2Zr3Si26O72(OH)2·3H2O
trigonal
R3m

 
 
Na12(Ce,REE,Sr)3Ca6Mn3Zr3W(Si25O73)(OH)3(CO3)·H2O
trigonal
R3m

 
 
Na15(Ca,Ce,La)6(Mn2+,Fe2+)3Zr3Nb[O|(F,Cl,OH)|Si3O9|Si9O27]2·2H2O
trigonal
R3m

 
 
Na12Sr3Ca6(Fe2+Mn2+)3Zr3(W,Nb)[(OH,Cl)|Si0.5(O,OH)2|Si3O9|Si9O27]2
trigonal
R3m

 
 
Na14Ca6Mn3Zr3[Si26O72(OH)2](H2O,Cl,O,OH)6
trigonal
R3m

 
 
Na12Sr3Ca6(Mn2+,Fe2+)3Zr3(W,Nb)[(OH,Cl)|Si0.5(O,OH)2|Si3O9|Si9O27]2
trigonal
R3m

 
 
Na9(Ca,Na)6Ca6Fe2Zr3☐Si25O72(CO3)(OH)4
trigonal
R3m

 
 
Na14Ca6Zr3[Na2(Fe,Mn)][Si26O72](OH)2(H2O1.0Cl0.6S2-0.5)(OH,H2O)2.5
trigonal
R3m

 
 
Na9Sr3[(H2O)2Na]Ca6Mn3Zr3NbSi(Si24O72)O(OH)3 (CO3)·H2O
trigonal
R3m

 
 
Na15Ca3Mn3Fe3Zr3Nb(Si25O73)(O,OH,H2O)3(OH,Cl)2
trigonal
R3

 
 
Na15Ca3Fe3(Na,Zr)3Zr3Nb<0.5[(Cl,OH)|(Si3O9)2|(Si9O27)2·SiO]·3(OH,H2O)
trigonal
R3

 
 
Na27K8Ca12Fe3Zr6Si52O144(OH,O)6Cl2
trigonal
R3m

 
 
(H3O)12Na3(Ca3Mn3)(Na2Fe)Zr3Si[Si24O69(OH)3](OH)Cl⋅H2O
trigonal
R3

 
 
Na15(Ca3Mn3)(Na2Fe)Zr3Si26O72(OH)3·H2O
trigonal
R3

 
 
Na8Mn2+3Ca6(Fe3+,Mn2+)3Zr3NbSi24(Si,☐,Ti)O72(O,OH)3Cl·4H2O
trigonal
R3m

 
 
Na12Sr3Ca6Fe3Zr3NbSi25O73(O,OH,H2O)3Cl2
trigonal
R3m

 
 
Na12Ca5(Ce,La,Y,Ca)Zr3(Zr,Nb)(Fe,Mn)3[Si9O24-26(OH)1-3]2[Si3O9]2Cl
trigonal
R3m

 
 
(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)
trigonal
R3m

 
 
Na14Ca4(Mn,Ca)2Zr3(Si3O9)2(Si9O27)2(Si,Nb,Al,Zr)2(Fe,Mn,Al,Ti)3(Na,Ce,La,Y,Mn)(Na,H2O,K,Sr)(OH)7-8
 
 

 
 
Na16Ca6(Mn,Ce)3Zr3(Si3O9)2(Si9O27)2(OH,Cl)4 · nH2O
trigonal
R3m

 
 
Na12(Ca,Mn)6(Sr,Na,K)3(Fe,Mn)3(Zr,Nb)4Si25O66(OH,Cl)11
trigonal
R3m

 
 
Zr4(Ca,Na,Mn,Fe)6(Fe,Mn,Ti)3Na17Si25O75(Al,Nb,Ti)Cl(OH)4.H2O
trigonal
R3m

 
 
Na14(Na,Ca,Ce)(Mn,Ca,Ce)[Fe1.55(Zr,Na)(◻,Ti,Nb)]Zr3(Si,Al)(Si3O9)2(Si9O27)2(OH,O)4(F ,Cl) · H2O
 
 

 
 
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
trigonal
R3m

 
 
Na16Ca6(Fe,Mn)3Zr3(Ti,Nb)Si26O72FCl0.5 · nH2O
trigonal
R3m

 
 
[(H3O)9.32Na5.86K0.53Ba0.36Sr0.15][Ca5.22Sr0.49Ce0.16Mn0.13][Zr2.42Ti0.54Hf0.02Nb0.02][Na1.48(Fe0.10(H2O)0.1)][Si1.0(OH)1.0][Si0.44Al0.06(OH)0.50][Si3O9]2[Si9O26.25(OH)0.75]2Cl1.0·1H2O
 
 

 
 
[(H3O)9.26Na2.12K1.20Ba0.46Sr0.48][Ca5.76Ce0.24][Zr2.92Ti0.08][Na0.62(Fe0.23Mn0.11(H2O)0.34)][(Si0.57)(Si0.21Al0.19Nb0.03)(OH)1.44][(Si0.45)(Ti0.21)(Si0.34)(O,OH)0.34(OH)1.08][Si0.19(OH)0.57] [Si3O9]2[Si9O27]2Cl1.05·0.8H2O
 
 

 
 
[(H3O)10.85Na3.3Sr0.48K0.21Ce0.2Y0.1Ba0.04][Ca2.1Na0.9][Ca2.4Na0.3Mn0.3][Zr2.97Hf0.03][Fe1.32Mn0.6O1.44(H2O)1.80][(Ti0.22Nb0.02)(Si0.23)(Si0.19)(OH)0.42][(Si0.44)(Nb0.1Al0.1)(Nb0.0)(OH)0.44][Si3O9]2[Si9O26.01(OH)0.99]2Cl1.0·1.19H2O
 
 

 
 
[(H3O)11.61Na3.0Sr0.63Ce0.22K0.2Y0.05Ba0.03][Ca2.25Na0.75][Ca2.4Mn0.6][Zr2.98Hf0.02][Fe3+0.66Mn0.3Mn0.3(H2O)1.43(OH)0.79][(Ti0.16Al0.07Mg0.03)(Si0.17)(OH)0.17][(Si0.50)(Si0.31)(Nb0.18Ta0.01)(OH)0.81][Si3O9]2[Si9O26.14(OH)0.86]2Cl1.1·0.63H2O
 
 

 
 
[(H3O)5.58Na5.25Ce0.63K0.3Y0.19Sr0.05][Ca3][Ca1.71Mn1.29][Zr2.96Hf0.04][(Fe3+1.0Fe2+0.35)(Fe3+0.57)(Zr0.32Mn0.22)(O,OH)1.77(H2O)1.34][(Zr0.18)(Si0.5)(OH)0.5][(Nb0.41)(Al0.2Ti0.05)(Si018)(OH)0.93][Si3O9]2[Si9O26.28(OH)0.72]2Cl0.2·1.45H2O
 
 

 
 
[(H3O)8.53Na3.51Sr0.55Ce0.45Y0.3Ba0.15K0.06][Ca2.25Sr0.45Na0.3][Ca2.4Mn0.6][Zr2.97Hf0.03][(Mn0.64Fe0.38)O0.3(H2O)0.72][(Si0.49)(Si0.41)(Nb0.1)(OH)0.9][(Si0.29)(Si0.2)(Ti0.1Mg0.07Nb0.02)(OH)1.06][Si3O9]2[Si9O26.52(OH)0.48]2·2.12H2O
 
 

 
 
Na15(Ca3Mn3)Zr3(Fe,Zr)3SiSi(Si3O9)2(Si9O27)2O2(OH,F,Cl)3 · 2H2O
 
 

 
 
Na15Ca3(Mn,Fe)3Zr3(Zr,Na)3(Si,Nb)(S,Ti,Si)(Si3O9)2(Si9O27)2(O,OH)5(Cl,F,H2O)
 
 

 
 
Na33Ca12Zr6 Mn3(Mn,Nb,Ti)2Si50O132(O,OH)12(OH,H2O,Cl)10
 
 

 
 
[Na,(H3O)]15(Ca3Mn3)Na3Zr3(Si,Ti)[Si25O72OH](OH)2 · 2H2O
 
 

 
 
Na14Ca5(Mg,Ca,Mn)Zr3(Si3O9)2(Si9O27)2(Si,Nb,Al,Zr)2(Fe,Zr)3(Mn,Na,Ce,La,Y)(Na,H2O,K,Sr)(OH)4-5(OH,Cl)
 
 

 
 
Na29Ca12Zr6[Si48O132(O,OH)12]{[Na]4[Si]2}{[Mn]3[Mn,Nb,Ti]2}(OH,H2O,Cl)10
trigonal
R3m

 
 
Na37Ca10Mn2FeZr6Si50(Ti,Nb)2O144(OH)5Cl3 · H2O
trigonal
R3m

 
 
(Na,☐)12(Ce,Na)3Ca6Mn3Zr3NbSi25O73(OH)3(CO3)·H2O
trigonal
R3m

Refresh list

Actuality: 09. Jul 2024 - 07:08:58

Other languages

German

Siudait

English

Siudaite

CNMNC (IMA)-Number

IMA 2017-092

CNMNC symbol

Symbol

Siu

Locations with GPS information

IDs

GUSID (Global unique identifier short form) l_5yQvRCDUqEPle230tCdQ
GUID (Global unique identifier) 4272FE97-42F4-4A0D-843E-57B6DF4B4275
Database ID 8475