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Sogdianite

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About SogdianiteHide

09485290015822473482612.jpg
Sogdiana
Formula:
KZr2Li3Si12O30
Simplified formula: Zr2KLi3Si12O30;
end-member formula: Zr22K[Li3Si12O30]
Colour:
Violet, pale pink
Lustre:
Vitreous
Hardness:
7
Specific Gravity:
2.90
Crystal System:
Hexagonal
Member of:
Name:
Named after the ancient region of Sogdia/Sogdiana that at different times included territory located in present-day Uzbekistan, Tajikistan, Kazakhstan, and Kyrgyzstan. It existed from the 6th century BC to the 11th century AD. The type locality is in this region.
Osumilite Group. The Zr analogue of berezanskite and brannockite. The only mineral with dominant K, Li and Zr combined.

Structural characteristics: (1) the A octahedron and T2 tetrahedron are completely occupied by Zr and Li; (2) the dominance of Zr at the T2 site induces the lack of Na at the B site.

Visit gemdat.org for gemological information about Sogdianite.


Classification of SogdianiteHide

Approved
First Published:
1968
8/E.22-120
9.CM.05

9 : SILICATES (Germanates)
C : Cyclosilicates
M : [Si6O18]12- 6-membered double rings (sechser-Doppelringe)
63.2.1a.13

63 : CYCLOSILICATES Condensed Rings
2 : Condensed Rings (Milarite - Osumilite group)
16.1.16

16 : Silicates Containing Aluminum and other Metals
1 : Aluminosilicates of Li

Physical Properties of SogdianiteHide

Vitreous
Transparency:
Translucent
Colour:
Violet, pale pink
Hardness:
Cleavage:
Perfect
{0001}
Density:
2.90 g/cm3 (Measured)    

Optical Data of SogdianiteHide

Type:
Uniaxial (-)
RI values:
nω = 1.608 nε = 1.606
Max Birefringence:
δ = 0.002
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate

Chemical Properties of SogdianiteHide

Formula:
KZr2Li3Si12O30

Simplified formula: Zr2KLi3Si12O30;
end-member formula: Zr22K[Li3Si12O30]
Idealised Formula:
K□2Li3Zr2[Si12O30]
Common Impurities:
Al,Mn,Mg,Ba

Crystallography of SogdianiteHide

Crystal System:
Hexagonal
Class (H-M):
6/mmm (6/m 2/m 2/m) - Dihexagonal Dipyramidal
Space Group:
P6/mcc
Setting:
P6/mcc
Cell Parameters:
a = 10.08 Å, c = 14.24 Å
Ratio:
a:c = 1 : 1.413
Unit Cell V:
1,253.03 ų (Calculated from Unit Cell)
Z:
2

X-Ray Powder DiffractionHide

Image Loading

Radiation - Copper Kα
Data Set:
Data courtesy of RRUFF project at University of Arizona, used with permission.
Powder Diffraction Data:
d-spacingIntensity
3.20 Å(100)
2.90 Å(100)
4.09 Å(90)
1.838 Å(80)
1.326 Å(80)
1.517 Å(70)
4.51 Å(60)

Type Occurrence of SogdianiteHide

General Appearance of Type Material:
tabular crystals to 1 cm; platy aggregates to 15 cm
Place of Conservation of Type Material:
Mineralogy Museum, St. Petersburg University, St. Petersburg, no. 16246; Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia, nos. 72028, 74962, vis3595
Geological Setting of Type Material:
pegmatite of the alkaline-granitic composition
Associated Minerals at Type Locality:
Reference:
Dusmatov, V.D., Efimov, A.F., Kataeva, Z.T., Khoroshilova, L.A., Yanulov, K.P. (1968) Sogdianite - a new mineral. Doklady Akademii Nauk SSSR: 182: 1176-1177.

Other Language Names for SogdianiteHide

German:Sogdianit
Simplified Chinese:锆锂大隅石
Spanish:Sogdianita
Traditional Chinese:鋯鋰大隅石

Relationship of Sogdianite to other SpeciesHide

Member of:
Other Members of this group:
Agakhanovite-(Y)(YCa)□2KBe3Si12O30Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
AlmaruditeK(◻,Na)2(Mn,Fe,Mg)2[(Be,Al)3Si12]O30Hex. 6/mmm (6/m 2/m 2/m) : P6/mmm
AluminosugiliteKNa2Al2Li3Si12O30Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
ArmeniteBaCa2Al6Si9O30 · 2H2OOrth. mmm (2/m 2/m 2/m) : Pnna
BerezanskiteKTi2Li3Si12O30Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
BrannockiteKSn2(Li3Si12)O30Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
ChayesiteK(Mg,Fe2+)4Fe3+[Si12O30]Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
DarapiositeKNa2Mn2(Li2ZnSi12)O30Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
DusmatoviteKK2Mn2(Zn2LiSi12)O30Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
EifeliteKNa3Mg4Si12O30Hex.
FriedrichbeckeiteK(◻Na)Mg2(Be2Mg)Si12O30Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
Klöchite(Fe2+Fe3+)◻2KZn3(Si12O30)Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc
Merrihueite(K,Na)2(Fe2+,Mg)5Si12O30Hex.
MilariteK2Ca4Al2Be4Si24O60 · H2OHex. 6/mmm (6/m 2/m 2/m) : P6/mcc
OftedaliteKSc22Be3Si12O30Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
Osumilite(K,Na)(Fe2+,Mg)2(Al,Fe3+)3(Si,Al)12O30Hex.
Osumilite-(Mg)KMg2Al3(Al2Si10)O30Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
PoudretteiteKNa2B3Si12O30Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
RoedderiteKNaMg2(Mg3Si12)O30Hex. 6 m2 : P62c
ShibkoviteK2Ca2(Zn3Si12)O30Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
SugiliteKNa2Fe3+2(Li3Si12)O30Hex.
TrattneriteFe3+2(Mg3Si12)O30Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
UM1990-73-SiO:KMnNaZn(K,Na)2Zn3Mn1.5Si12O30Hex.
Unnamed (Mn3+-dominant analog of Sugilite)KNa2(Mn3+,Fe3+,Al)2Li3Si12O30
YagiiteNaMg2(AlMg2Si12)O30Hex. 6/mmm (6/m 2/m 2/m)

Common AssociatesHide

Associated Minerals Based on Photo Data:
7 photos of Sogdianite associated with QuartzSiO2
2 photos of Sogdianite associated with PolylithioniteKLi2Al(Si4O10)(F,OH)2
2 photos of Sogdianite associated with Arfvedsonite[Na][Na2][Fe2+4Fe3+]Si8O22(OH)2
1 photo of Sogdianite associated with TuhualiteNaFe2+Fe3+Si6O15
1 photo of Sogdianite associated with TienshaniteKNa3Na6Ca2Ba6Mn6(Ti4+,Nb)6B12Si36O114(O,OH,F)11
1 photo of Sogdianite associated with ZektzeriteLiNaZrSi6O15

Related Minerals - Nickel-Strunz GroupingHide

9.CM.Agakhanovite-(Y)(YCa)□2KBe3Si12O30Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
9.CM.05ArmeniteBaCa2Al6Si9O30 · 2H2OOrth. mmm (2/m 2/m 2/m) : Pnna
9.CM.05BrannockiteKSn2(Li3Si12)O30Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
9.CM.05ChayesiteK(Mg,Fe2+)4Fe3+[Si12O30]Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
9.CM.05DarapiositeKNa2Mn2(Li2ZnSi12)O30Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
9.CM.05EifeliteKNa3Mg4Si12O30Hex.
9.CM.05Merrihueite(K,Na)2(Fe2+,Mg)5Si12O30Hex.
9.CM.05MilariteK2Ca4Al2Be4Si24O60 · H2OHex. 6/mmm (6/m 2/m 2/m) : P6/mcc
9.CM.05Osumilite-(Mg)KMg2Al3(Al2Si10)O30Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
9.CM.05Osumilite(K,Na)(Fe2+,Mg)2(Al,Fe3+)3(Si,Al)12O30Hex.
9.CM.05PoudretteiteKNa2B3Si12O30Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
9.CM.05RoedderiteKNaMg2(Mg3Si12)O30Hex. 6 m2 : P62c
9.CM.05SugiliteKNa2Fe3+2(Li3Si12)O30Hex.
9.CM.05YagiiteNaMg2(AlMg2Si12)O30Hex. 6/mmm (6/m 2/m 2/m)
9.CM.05BerezanskiteKTi2Li3Si12O30Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
9.CM.05DusmatoviteKK2Mn2(Zn2LiSi12)O30Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
9.CM.05ShibkoviteK2Ca2(Zn3Si12)O30Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
9.CM.05AlmaruditeK(◻,Na)2(Mn,Fe,Mg)2[(Be,Al)3Si12]O30Hex. 6/mmm (6/m 2/m 2/m) : P6/mmm
9.CM.05TrattneriteFe3+2(Mg3Si12)O30Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
9.CM.05OftedaliteKSc22Be3Si12O30Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
9.CM.9.CM.AluminosugiliteKNa2Al2Li3Si12O30Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
9.CM.10FaizieviteK2Na(Ca6Na)Ti4Li6[Si6O18]2[Si12O30]F2Tric. 1 : P1

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

63.2.1a.1BrannockiteKSn2(Li3Si12)O30Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
63.2.1a.2ChayesiteK(Mg,Fe2+)4Fe3+[Si12O30]Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
63.2.1a.3DarapiositeKNa2Mn2(Li2ZnSi12)O30Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
63.2.1a.4EifeliteKNa3Mg4Si12O30Hex.
63.2.1a.5Merrihueite(K,Na)2(Fe2+,Mg)5Si12O30Hex.
63.2.1a.6Osumilite(K,Na)(Fe2+,Mg)2(Al,Fe3+)3(Si,Al)12O30Hex.
63.2.1a.8PoudretteiteKNa2B3Si12O30Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
63.2.1a.9SugiliteKNa2Fe3+2(Li3Si12)O30Hex.
63.2.1a.10YagiiteNaMg2(AlMg2Si12)O30Hex. 6/mmm (6/m 2/m 2/m)
63.2.1a.11DusmatoviteKK2Mn2(Zn2LiSi12)O30Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
63.2.1a.12MilariteK2Ca4Al2Be4Si24O60 · H2OHex. 6/mmm (6/m 2/m 2/m) : P6/mcc
63.2.1a.14RoedderiteKNaMg2(Mg3Si12)O30Hex. 6 m2 : P62c

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

16.1.1PetaliteLiAl(Si4O10)Mon. 2/m : P2/b
16.1.2SpodumeneLiAlSi2O6Mon.
16.1.3EucryptiteLiAlSiO4Trig. 3 : R3
16.1.4VirgiliteLiAlSi2O6Hex. 6 2 2 : P62 2 2
16.1.5Cookeite(Al2Li)Al2(AlSi3O10)(OH)8Mon. 2/m
16.1.6BikitaiteLiAlSi2O6 · H2OTric. 1 : P1
16.1.7LunijianlaiteLi0.7Al6.2(AlSi7O20)(OH,O)10Mon.
16.1.8SwineforditeLi(Al,Li,Mg)4((Si,Al)4O10)2(OH,F)4 · nH2OMon.
16.1.9Holmquistite☐{Li2}{Mg3Al2}(Si8O22)(OH)2Orth.
16.1.13Clino-holmquistite Root Name☐{Li2}{Z2+3Z3+2}(Si8O22)(OH,F,Cl)2Mon.
16.1.14Magnesioholmquistite☐{Li2}{Mg3Al2}(Si8O22)(OH)2
16.1.15BityiteLiCaAl2(AlBeSi2O10)(OH)2Mon. 2/m : B2/b
16.1.17SugiliteKNa2Fe3+2(Li3Si12)O30Hex.

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 SogdianiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Dusmatov, V.D., Efimov, A.F., Kataeva, Z.T., Khoroshilova, L.A., Yanulov, K.P. (1968) Sogdianite - a new mineral. Doklady Akademii Nauk SSSR: 182: 1176-1177.
Fleischer, M. (1969) New mineral names. American Mineralogist: 54: 1218-1223.
Fleischer, M. (1972) New mineral names. American Mineralogist: 57: 1909-1914.
Cooper, M.A., Hawthorne, F.C., Grew, E.S. (1999) The crystal chemistry of sogdianite, a milarite-group mineral. American Mineralogist: 84: 764-768.
Anthony, J.W., Bideaux, R.A., Bladh, K.W. and Nichols, M.C., Eds. (2016) Handbook of Mineralogy, Mineralogical Society of America, Chantilly, VA 20151-1110, USA. http://www.handbookofmineralogy.org/
Gagné, O.C., Hawthorne, F.C. (2016) Chemographic exploration of the milarite-type structure. The Canadian Mineralogist: 54: 1229-1247.
Sokolova, E.V., Hawthorne, F.C., Pautov, L.A. (2000) The crystal chemistry of Li-bearing minerals with the milarite-type structure: the crystal structure of end-member sogdianite. The Canadian Mineralogist: 38: 853-859.
Geiger, C.A., Grodzicki, M. (2012) A 57Fe Mössbauer spectroscopic study of sogdianite: an example of a symmetric electric field gradient around Fe3+. Physics and Chemistry of Minerals: 39: 73-78.

Internet Links for SogdianiteHide

Localities for SogdianiteHide

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.
South Africa
 
  • Northern Cape
    • Kalahari manganese field
      • Hotazel
Michael O’Donoghue, Gems, Sixth Edition (2006), p. 454
Tajikistan (TL)
 
  • Districts of Republican Subordination
Dusmatov, V.D., Efimov, A.F., Kataeva, Z.T., Khoroshilova, L.A., Yanulov, K.P. (1968) Sogdianite - a new mineral. Doklady Akademii Nauk SSSR: 182: 1176-1177. Fleischer, M. (1969) New mineral names. American Mineralogist: 54: 1218-1223.; Pautov, L.A., Agakhanov, A.A., Sokolova, E., Hawthorne, F.C. (2004) Maleevite, BaB2Si2O8, and pekovite, SrB2Si2O8, new mineral species from the Dara-i-Pioz alkaline massif, Northern Tajikistan: description and crystal structure. The Canadian Mineralogist: 42: 107-119.; Agakhanov, A.A., Pautov, L.A., Karpenko, V.Yu., Bekenova, G.K., Uvarova, Yu.A. (2011) Orlovite, KLi2 TiSi4 O11F, a new mineral of the mica group. New Data on Minerals: 46: 13-19.
USA
 
  • Washington
    • Okanogan Co.
      • Golden Horn Batholith
Micro Probe Volume VI Number 8; Rocks and Minerals, 66:6, p. 456
 
Mineral and/or Locality  
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