URGENT MESSAGE: Time is running out. Click here to find out why.
Log InRegister
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for Educators
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
StatisticsThe ElementsUsersBooks & MagazinesMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Siudaite

This page is currently not sponsored. Click here to sponsor this page.
Hide all sections | Show all sections

About SiudaiteHide

Formula:
Na8(Mn2+2Na)Ca6(Fe3+,Mn2+)3Zr3NbSi24(Si,◻,Ti)O74(OH)2Cl·5H2O
may also be written as Na8(Mn2Na)Ca6(Fe3+,Mn2+)3Zr3Nb[(Si9O27)2(Si3O9)2(Si,◻,Ti)O]O(OH)2Cl·5H2O
Colour:
Yellow, yellow-orange; cherry red (when oxidized)
Crystal System:
Trigonal
Member of:
Name:
In honor of Rafał Siuda (b. 1975), Ph.D., of the Institute of Geochemistry, Mineralogy and Petrology, Faculty of Geology, University of Warsaw, mineralogist interested in both secondary (oxidation zones) minerals and pegmatites (he co-organized and attended the Young Geologists' Club trip to Kola Peninsula in 2008, during which the mineral was found), mineral collector, engaged in the "Spirifer" geological group, author of many articles in "Otoczak", co-author of the Płóczki agates album
Related to georgbarsanovite. The first group member with essential Mn in the sites usually occupied by Na, K, and/or H3O. Also the most hydrated representative in terms of non-proton-bounded water.

Found during the Kola Peninsula trip of the Young Geologists' Club of the Faculty of Geology, University of Warsaw.


Classification of SiudaiteHide

Approved
Approval Year:
2018
Approval History:
IMA No. 2017-092

Physical Properties of SiudaiteHide

Colour:
Yellow, yellow-orange; cherry red (when oxidized)

Chemical Properties of SiudaiteHide

Formula:
Na8(Mn2+2Na)Ca6(Fe3+,Mn2+)3Zr3NbSi24(Si,◻,Ti)O74(OH)2Cl·5H2O

may also be written as Na8(Mn2Na)Ca6(Fe3+,Mn2+)3Zr3Nb[(Si9O27)2(Si3O9)2(Si,◻,Ti)O]O(OH)2Cl·5H2O
Idealised Formula:
Na8(Mn2+2Na)Ca6(Fe3+,Mn2+)3Zr3NbSi25O74(OH)2Cl·5H2O

Crystallography of SiudaiteHide

Crystal System:
Trigonal
Class (H-M):
3m - Ditrigonal Pyramidal
Space Group:
R3m
Cell Parameters:
a = 14.188(3) Å, c = 29.831(7) Å
Ratio:
a:c = 1 : 2.103
Unit Cell V:
5,200.45 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
6.38(60)
5.68(47)
4.29(55)
3.389(47)
3.191(63)
2.963(100)
2.843(99)
2.577(49)

Type Occurrence of SiudaiteHide

Place of Conservation of Type Material:
Collections of the Mineralogical and Petrographical Section, Museum of Earth PAS (Muzeum Ziemi Polskiej Akademii Nauk),aleja Na Skarpie 20/26, PL-00-488 Warsaw, Poland, catalogue no. MZI III/1/541

Relationship of Siudaite to other SpeciesHide

Member of:
Other Members of this group:
AlluaiviteNa19(Ca,Mn)6(Ti,Nb)3Si26O74Cl · 2H2OTrig. 3m (3 2/m) : R3m
AndrianoviteNa12(K,Sr,Ce)3Ca6Mn3Zr3Nb(Si25O73)(O,H2O,OH)5Trig. 3m : R3m
Aqualite(H3O)8(Na,K,Sr)5Ca6Zr3Si26O66(OH)9ClTrig. 3 : R3
CarbokentbrooksiteNa11-12(Na,Ce)3Ca6Mn3Zr3Nb[(OH)3|CO3|(Si3O9)2|(Si9O27)2SiO] · H2OTrig. 3m : R3m
DavinciiteNa12K3Ca6Fe2+3Zr3(Si26O73OH)Cl2 Trig. 3m : R3m
DualiteNa30(Ca,Na,Ce,Sr)12(Na,Mn,Fe,Ti)6Zr3Ti3Mn[Si51O144](OH,H2O,Cl)9Trig. 3m : R3m
EudialyteNa15Ca6(Fe2+,Mn2+)3Zr3[Si25O73](O,OH,H2O)3(OH,Cl)2Trig. 3m (3 2/m) : R3m
FeklicheviteNa11Ca9(Fe3+,Fe2+)2Zr3Nb[Si25O73](OH,H2O,Cl,O)5Trig. 3m : R3m
FengchengiteNa123(Ca,Sr)6Fe3+3 Zr3Si(Si25O73)(H2O,OH)3(OH,Cl)2Trig. 3m (3 2/m) : R3m
FerrokentbrooksiteNa15Ca6(Fe,Mn)3Zr3NbSi25O73(O,OH,H2O)3Cl2Trig. 3m : R3m
GeorgbarsanoviteNa12(Mn,Sr,REE)3Ca6Fe2+3Zr3NbSi25O76Cl2·H2OTrig. 3m : R3m
GolysheviteNa10Ca3Ca6Zr3Fe2SiNb(Si3O9)2(Si9O27)2CO3(OH)3 · H2OTrig. 3m : R3m
Hydrorastsvetaevite(Na11(H3O)11K6(H2O)1.5Sr)Ca12Fe3Na2MnZr6Si52O144(OH)4.5Cl3.5Trig. 3m : R3m
Ikranite(Na,H3O)15(Ca,Mn2+)6Fe3+2Zr3-4[Cl|(H0-3Si3O9)2|{(Si9O27)2,(Si9O27)2SiO}] · 2-3H2OTrig. 3m : R3m
Ilyukhinite(H3O,Na)14Ca6Mn2Zr3Si26O72(OH)2·3H2OTrig. 3m : R3m
Johnsenite-(Ce)Na12Ce3Ca6Mn3Zr3WSi25O73(CO3)(OH)2Trig. 3m : R3m
Kentbrooksite(Na,REE)15(Ca,REE)6(Mn2+,Fe2+)3Zr3Nb[Si25O74]F2 · 2H2OTrig. 3m : R3m
KhomyakoviteNa12Sr3Ca6Fe3Zr3W[Si25O73](O,OH,H2O)3(OH,Cl)2Trig. 3m : R3m
Labyrinthite(Na,K,Sr)35Ca12Fe3Zr6TiSi51O144(O,OH,H2O)9Cl3Trig. 3 : R3
ManganoeudialyteNa14Ca6Mn3Zr3[Si26O72(OH)2](H2O,Cl,O,OH)6Trig. 3m : R3m
ManganokhomyakoviteNa12Sr3Ca6Mn3Zr3W[Si25O73](O,OH,H2O)3(OH,Cl)2Trig. 3m : R3m
MogoviditeNa9(Ca,Na)12Fe2Zr3Si25O72(CO3) (OH)4Trig. 3m : R3m
OneilliteNa15Ca3Mn3Fe2+3Zr3Nb(Si25O73)(O,OH,H2O)3(OH,Cl)2Trig. 3 : R3
RaslakiteNa15Ca3Fe2+3(Na,Zr)3Zr3Nb<0.5[(Cl,OH)|(Si3O9)2|(Si9O27)2SiO] · 3(OH,H2O)Trig. 3
RastsvetaeviteNa27K8Ca12Fe3Zr6Si52O144(O,OH,H2O)6Cl2Trig. 3m : R3m
TaseqiteNa12Sr3Ca6Fe3Zr3Nb[Cl2|(Si3O9)2|(Si9O27)2SiO] · 3(O,OH,H2O)Trig. 3m : R3m
UM1971-22-SiO:CaClFeHMgMnNaNbZrNa12Ca5(Ce,La,Y,Ca)Zr3(Zr,Nb)(Fe,Mn)3[Si9O24-26(OH)1-3]2[Si3O9]2ClTrig. 3m : R3m
UM1990-79-SiO:CaClFeHMnNaNbREEZrNa14Ca5(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)
UM1990-80-SiO:CaFeHMnNaNbREEZrNa14Ca4(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
UM1998-21-SiO:CaCeClHMnNaZrNa16Ca6(Mn,Ce)3Zr3(Si3O9)2(Si9O27)2(OH,Cl)4Trig. 3m : R3m
UM1999-36-SiO:CaCeHMnNaNbSrZrNa17(Ca,Ce,Sr)2Mn3(Zr,Nb)4Si25O73(O,OH,F,Cl)5Trig. 3 : R3
UM2000-66-SiO:CaClFeHMnNaNbSrZrNa12(Ca,Mn)6(Sr,Na,K)3(Fe,Mn)3(Zr,Nb)4Si25O66(OH,Cl)11Trig. 3m : R3m
UM2003-39-SiO:CaClFeHHfNaNbSrTaTiZrNa12(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
UM2004-51-SiO:CaClFFeHNaNbTiNa16Ca6(Fe,Mn)3Zr3(Ti,Nb)Si26O72FCl0.5•nH2OTrig. 3m : R3m
UM2006-17-SiO:CaClFFeHMnNaZrNa15(Ca3Mn3)Zr3(Fe,Zr)3SiSi(Si3O9)2(Si9O27)2O2(OH,F,Cl)3•2H2O
UM2006-18-SiO:CaClFFeHMnNaZrNa15Ca3(Mn,Fe)3Zr3(Zr,Na)3(Si,Nb)(S,Ti,Si)(Si3O9)2(Si9O27)2(O,OH)5(Cl,F,H2O)
UM2006-28-SiO:CaHMnNaZrNa33Ca12Zr6Mn3(Mn,Nb,Ti)2Si50O132(O,OH)12(OH,H2O,Cl)10
UM2010-06-SiO:CaFeHMnNaNbREETiZr[Na,(H3O)]15(Ca3Mn3)Na3Zr3(Si,Ti)[Si25O72OH](OH)2·2H2O
Unnamed (Eudialyte 3248)Na29Ca12Zr6[Si48O132(O,OH)12]{[Na]4[Si]2}{[Mn]3[Mn,Nb,Ti]2}(OH,H2O,Cl)10Trig. 3m (3 2/m) : R3m
Unnamed (Hydrated Hydrous Na-Ca-Mn-Fe-Zr-Ti Silicate Chloride)Na37Ca10Mn2FeZr6Si50(Ti,Nb)2O144(OH)5Cl3·H2OTrig. 3m : R3m
VoronkoviteNa15(Na,Ca,Ce)3(Mn,Ca)3Fe3Zr3Si26O72(OH,O)4Cl · H2OTrig. 3 : R3
Zirsilite-(Ce)Na11-12(Ce,Na)3Ca6Mn3Zr3Nb(Si19O55)(Si3O9)2(CO3)(OH)3 · H2OTrig. 3m : R3m

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for SiudaiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Chukanov N.V., Rastsvetaeva, R.K., Kruszewski, Ł., 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, "online first", 1-14; https://doi.org/10.1007/s00269-018-0959-9
Chukanov, N., Rastsvetaeva, R.K., Kruszewski, Ł., Aksenov, S.M., Rusakov, V.S., Britvin, S.N. and Vozchikova, S.A. (2018) Siudaite, IMA 2017-092. CNMNC Newsletter No. 41, February 2018, page 184; European Journal of Mineralogy: 30: 183-186.

Internet Links for SiudaiteHide

Localities for SiudaiteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Russia (TL)
 
  • Northern Region
    • Murmanskaya Oblast'
      • Khibiny Massif
Chukanov, N., Rastsvetaeva, R.K., Kruszewski, Ł., Aksenov, S.M., Rusakov, V.S., Britvin, S.N. and Vozchikova, S.A. (2018) Siudaite, IMA 2017-092. CNMNC Newsletter No. 41, February 2018, page 184; European Journal of Mineralogy: 30: 183-186.
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2018, except where stated. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: August 21, 2018 07:05:02 Page generated: July 25, 2018 22:57:07
Go to top of page