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Sosedkoite

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04832900015123029411698.jpg
Alexander F. Sosedko
Formula:
(K,Na)5Al2(Ta,Nb)22O60
Colour:
Colourless
Lustre:
Adamantine
Hardness:
6
Crystal System:
Orthorhombic
Name:
Named after Alexander Fedorovich Sosedko (Александра Федоровича Соседко) (12 September 1901 - 1957), mineralogist, Institute of Geological Sciences, Academy of Sciences of the USSR (Moscow). He was a specialist in granite pegmatites.
This page provides mineralogical data about Sosedkoite.


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Classification of SosedkoiteHide

Approved
Approval year:
1981
4.DM.05

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
D : Metal: Oxygen = 1:2 and similar
M : With large (+- medium-sized) cations; unclassified
8.7.6.2

8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
7 : Miscellaneous
18.1.20

18 : Niobates and Tantalates
1 : Niobates and tantalates containing neither rare earths nor U

Physical Properties of SosedkoiteHide

Adamantine
Transparency:
Transparent
Colour:
Colourless
Hardness:

Chemical Properties of SosedkoiteHide

Formula:
(K,Na)5Al2(Ta,Nb)22O60
IMA Formula:
K5Al2Ta22O60
Common Impurities:
Sb

Crystallography of SosedkoiteHide

Crystal System:
Orthorhombic
Cell Parameters:
a = 17.25 Å, b = 17.73 Å, c = 3.95 Å
Ratio:
a:b:c = 0.973 : 1 : 0.223
Unit Cell V:
1,208.08 ų (Calculated from Unit Cell)

Type Occurrence of SosedkoiteHide

Place of Conservation of Type Material:
Geology Museum, Kola Branch, Academy of Sciences, Apatity, 5518.
Mining Museum, St. Petersburg, 2099/1.
A.E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia.
Reference:
Voloshin, A.V., Mel’nikov, Y.P., Pakhomovskii, Ya.A. (1982) Sosedkoite, (K,Na)5Al2(Ta,Nb,Sb)22O60, a new mineral from granite pegmatites. Doklady Akademii Nauk SSSR: 264: 442-445.

Synonyms of SosedkoiteHide

Other Language Names for SosedkoiteHide

German:Sosedkoit
Spanish:Sosedkoita

Related Minerals - Nickel-Strunz GroupingHide

4.DM.05Rankamaite(Na,K)3(Ta,Nb,Al)11(O,OH)31Orth. mmm (2/m 2/m 2/m) : Cmmm
4.DM.15Cesplumtantite(Cs,Na)2(Pb,Sb3+)3Ta8O24Tet.
4.DM.20EyseliteFe3+Ge4+3O7(OH)Orth.
4.DM.25KuranakhitePbMn4+Te6+O6Orth.

Related Minerals - Dana Grouping (8th Ed.)Hide

8.7.6.1Rankamaite(Na,K)3(Ta,Nb,Al)11(O,OH)31Orth. mmm (2/m 2/m 2/m) : Cmmm

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

18.1.1LithiotantiteLiTa3O8Mon.
18.1.2LueshiteNaNbO3Orth. mmm (2/m 2/m 2/m)
18.1.3NatroniobiteNaNbO3Mon.
18.1.4FranconiteNa(Nb2O5)(OH) · 3H2OMon.
18.1.5NatrotantiteNa2Ta4O11Mon.
18.1.6IrtyshiteNa2(Ta,Nb)4O11Hex.
18.1.7Rankamaite(Na,K)3(Ta,Nb,Al)11(O,OH)31Orth. mmm (2/m 2/m 2/m) : Cmmm
18.1.8Hydropyrochlore(H2O,◻)2Nb2(O,OH)6(H2O)Iso. m3m (4/m 3 2/m) : Fd3m
18.1.9CalciotantiteCaTa4O11Hex.
18.1.10RynersoniteCaTa2O6Orth. mmm (2/m 2/m 2/m)
18.1.11Microlite GroupA2-mTa2X6-wZ-nIso. m3m (4/m 3 2/m) : Fd3m
18.1.12BelyankiniteCa1-2(Ti,Nb)5O12 · 9H2O (?)Amor.
18.1.13LatrappiteCa2NbFe3+O6Orth. mmm (2/m 2/m 2/m) : Pnma
18.1.14Hochelagaite(Ca,Na,Sr)(Nb,Ti,Si,Al)4O11 · 8H2OMon.
18.1.15Bariomicrolite (of Hogarth 1977)Iso. m3m (4/m 3 2/m) : Fd3m
18.1.16ParabariomicroliteBaTa4O10(OH)2 · 2H2OTrig.
18.1.17Bariopyrochlore (of Hogarth 1977)A2Nb2(O,OH)6ZIso. m3m (4/m 3 2/m) : Fd3m
18.1.18AlumotantiteAlTaO4Orth. mmm (2/m 2/m 2/m) : Pbcn
18.1.19SimpsoniteAl4Ta3O13(OH)Trig. 3 : P3
18.1.21Thoreaulite(Sn2+,Pb)(Ta,Nb)2O6Mon.
18.1.22Stannomicrolite (of Hogarth 1977)
18.1.23FoorditeSn2+(Nb,Ta)2O6Mon. 2/m : B2/b
18.1.24ChangbaiitePbNb2O6Trig.
18.1.25Plumbopyrochlore (of Skorobogatova et al.)A2Nb2(O,OH)6Z
18.1.26Plumbomicrolite (of Hogarth 1977)
18.1.27StibiocolumbiteSb(Nb,Ta)O4Orth. mm2
18.1.28StibiotantaliteSb(Ta,Nb)O4Orth. mm2
18.1.29NatrobistantiteIso.
18.1.30Cesplumtantite(Cs,Na)2(Pb,Sb3+)3Ta8O24Tet.
18.1.31Stibiomicrolite (of Groat et al.)
18.1.32Cesstibtantite
18.1.34BismutotantaliteBi(Ta,Nb)O4Orth.
18.1.35Bismutomicrolite (of Hogarth 1977)Iso. m3m (4/m 3 2/m) : Fd3m
18.1.36Tantalite-(Mn)Mn2+Ta2O6Orth. mmm (2/m 2/m 2/m) : Pbcn
18.1.37Gerasimovskite(Mn,Ca)(Nb,Ti)5O12 · 9H2OAmor.
18.1.38Tapiolite-(Mn)Mn2+Ta2O6Tet. 4/mmm (4/m 2/m 2/m) : P42/mnm
18.1.39Columbite-(Mn)Mn2+Nb2O6Orth. mmm (2/m 2/m 2/m) : Pbcn
18.1.40WodginiteMn2+Sn4+Ta2O8Mon. 2/m : B2/b
18.1.41Ixiolite(Ta,Nb,Sn,Fe,Mn)4O8Orth.
18.1.42Columbite-(Fe)Fe2+Nb2O6Orth. mmm (2/m 2/m 2/m) : Pbcn
18.1.43Tantalite-(Fe)Fe2+Ta2O6Orth. mmm (2/m 2/m 2/m) : Pbcn
18.1.44ColumbiteOrth. mmm (2/m 2/m 2/m) : Pbcn
18.1.45Tantalite(Mn,Fe)(Ta,Nb)2O6
18.1.46Tapiolite(Fe,Mn)(Ta,Nb)2O6Tet. 4/mmm (4/m 2/m 2/m)
18.1.47Tapiolite-(Fe)Fe2+Ta2O6Tet. 4/mmm (4/m 2/m 2/m) : P42/mnm
18.1.48Columbite-(Mg)(Mg,Fe,Mn)(Nb,Ta)2O6Orth.
18.1.50Strüverite(Ti,Ta,Fe)O2
18.1.51 Staringite(Fe,Mn)x(Ta,Nb)2xSn6-3xO12

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 SosedkoiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Voloshin, A.V., Mel’nikov, Y.P., Pakhomovskii, Ya.A. (1982) Sosedkoite, (K,Na)5Al2(Ta,Nb,Sb)22O60, a new mineral from granite pegmatites. Doklady Akademii Nauk SSSR: 264: 442-445.
Dunn, P.J., Fleischer M (1983) New mineral names. American Mineralogist: 68: 642-645.

Internet Links for SosedkoiteHide

Localities for SosedkoiteHide

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)
 
  • Murmansk Oblast
    • Voron'i Tundry
Voloshin, A.V., Mel’nikov, Y.P., Pakhomovskii, Ya.A. (1982) Sosedkoite, (K,Na)5Al2(Ta,Nb,Sb)22O60, a new mineral from granite pegmatites. Doklady Akademii Nauk SSSR: 264: 442-445.; Anthony, J.W., et al. (1997) Handbook of Mineralogy, Vol. III.; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow.
 
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