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Shibkovite

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06740350014950655113541.jpg
Shibkovite, etc.

Dara-i-Pioz Glacier, Districts of Republican Subordination, Tajikistan
09734780014950718827893.jpg
Shibkovite, etc.

Dara-i-Pioz Glacier, Districts of Republican Subordination, Tajikistan
09232470014946591662152.jpg
Shibkovite, etc.

Dara-i-Pioz Glacier, Districts of Republican Subordination, Tajikistan
06740350014950655113541.jpg
Shibkovite, etc.

Dara-i-Pioz Glacier, Districts of Republican Subordination, Tajikistan
09734780014950718827893.jpg
Shibkovite, etc.

Dara-i-Pioz Glacier, Districts of Republican Subordination, Tajikistan
09232470014946591662152.jpg
Shibkovite, etc.

Dara-i-Pioz Glacier, Districts of Republican Subordination, Tajikistan
06740350014950655113541.jpg
Shibkovite, etc.

Dara-i-Pioz Glacier, Districts of Republican Subordination, Tajikistan
09734780014950718827893.jpg
Shibkovite, etc.

Dara-i-Pioz Glacier, Districts of Republican Subordination, Tajikistan
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About ShibkoviteHide

Formula:
K(□,K,Na)2Zn3Ca2[Si12O30]
Colour:
Colourless, white
Lustre:
Vitreous
Hardness:
5½ - 6
Crystal System:
Hexagonal
Member of:
Osumilite Group
Name:
Named after two prominent Russian geologists, Viktor Sergeevitch Shibkov (Виктора Сергеевича Шибкова) (1926-1992) and Nikolai Viktorovitch Shibkov (Николая Викторовича Шибкова) (1951-1991), who both spent their professional lives working on the geology of Soviet Asia.
Osumilite Group. A possibly related mineral is known as UM1990-73-SiO:KMnNaZn.


Classification of ShibkoviteHide

IMA status:
Approved
Strunz 8th ed.:
8/E.22-133
Nickel-Strunz 10th (pending) ed.:
9.CM.05

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

Physical Properties of ShibkoviteHide

Lustre:
Vitreous
Colour:
Colourless, white
Streak:
White
Hardness:
5½ - 6 on Mohs scale

Optical Data of ShibkoviteHide

Type:
Uniaxial (+)
RI values:
nω = 1.561 nε = 1.563
Max Birefringence:
δ = 0.002
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Low

Chemical Properties of ShibkoviteHide

Formula:
K(□,K,Na)2Zn3Ca2[Si12O30]
IMA Formula:
K2Ca2(Zn3Si12)O30
Idealised Formula:
K(□K)Zn3Ca2[Si12O30]
Elements listed:
Ca, K, Na, O, Si, Zn - search for minerals with similar chemistry

Crystallography of ShibkoviteHide

Crystal System:
Hexagonal
Class (H-M):
6/mmm (6/m 2/m 2/m) - Dihexagonal Dipyramidal
Space Group:
P6/mcc
Cell Parameters:
a = 10.505 Å, c = 14.185 Å
Ratio:
a:c = 1 : 1.35
Unit Cell V:
1,355.66 ų (Calculated from Unit Cell)
Z:
2

Type Occurrence of ShibkoviteHide

Synonyms of ShibkoviteHide

Other Language Names for ShibkoviteHide

German:Shibkovit
Simplified Chinese:钾钙锌大隅石
Spanish:Shibkovita
Traditional Chinese:鉀鈣鋅大隅石

Relationship of Shibkovite to other SpeciesHide

Member of:
Osumilite Group
Other Members of this group:
Agakhanovite-(Y)(YCa)□2KBe3Si12O30Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
AlmaruditeK(□,Na)2(Mn2+,Fe2+,Mg)2(Be,Al)3[Si12O30]Hex. 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
BerezanskiteK□2Li3(Ti,Zr,Sn)2[Si12O30]Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
Brannockite(K,Na)□2Li3(Sn,Zr,Ti)2[Si12O30]Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
ChayesiteKMg4Fe3+[Si12O30]Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
DarapiositeK(Na,◻,K)2(Li,Zn,Fe)3(Mn,Zr,Y)2[Si12O30]Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
DusmatoviteK(Na,□)2(Zn,Li)3(Mn2+,Y,Zr)2[Si12O30]Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
EifeliteKNa3Mg4Si12O30Hex.
FriedrichbeckeiteK(□0.5Na0.5)2Mg2Be3Si12O30Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
Klöchite(□Na)KFe2+2Zn3(Si12O30)Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc
Merrihueite(K,Na)2(Fe,Mg)5Si12O30Hex.
MilariteK2Ca4Al2Be4Si24O60 · H2OHex. 6/mmm (6/m 2/m 2/m) : P6/mcc
OftedaliteK(Sc,Ca,Mn2+)2◻2[(Be,Al)3Si12O30]Hex. 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
Roedderite(Na,K)2(Mg,Fe)5Si12O30Hex. 6 m2 : P62c
SogdianiteK(□,Na)2Li3(Zr,Fe,Ti)2[Si12O30]Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
SugiliteK(Na,□)2Li3(Fe,Mn,Al,Zr)2[Si12O30]Hex.
Trattnerite□(Fe3+,Mg,Fe2+)2(Mg,Fe2+,Fe3+)3(Si12O30)Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
UM1990-73-SiO:KMnNaZn(K,Na)2Zn3Mn1.5Si12O30Hex.
Yagiite(Na,K)3Mg4(Al,Mg)6(Si,Al)24O60Hex. 6/mmm (6/m 2/m 2/m)

Common AssociatesHide

Associated Minerals Based on Photo Data:
3 photos of Shibkovite associated with Pyrochlore GroupA2Nb2(O,OH)6Z
3 photos of Shibkovite associated with QuartzSiO2
2 photos of Shibkovite associated with ReedmergneriteNaBSi3O8
2 photos of Shibkovite associated with Telyushenkoite(Cs,Na,K)Na6[Be2Al3Si15O39]F2
1 photo of Shibkovite associated with PolylithioniteKLi2Al(Si4O10)(F,OH)2

Related Minerals - Nickel-Strunz GroupingHide

9.CM.05ArmeniteBaCa2Al6Si9O30 · 2H2OOrth. mmm (2/m 2/m 2/m) : Pnna
9.CM.05Brannockite(K,Na)□2Li3(Sn,Zr,Ti)2[Si12O30]Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
9.CM.05ChayesiteKMg4Fe3+[Si12O30]Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
9.CM.05DarapiositeK(Na,◻,K)2(Li,Zn,Fe)3(Mn,Zr,Y)2[Si12O30]Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
9.CM.05EifeliteKNa3Mg4Si12O30Hex.
9.CM.05Merrihueite(K,Na)2(Fe,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.05Roedderite(Na,K)2(Mg,Fe)5Si12O30Hex. 6 m2 : P62c
9.CM.05SogdianiteK(□,Na)2Li3(Zr,Fe,Ti)2[Si12O30]Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
9.CM.05SugiliteK(Na,□)2Li3(Fe,Mn,Al,Zr)2[Si12O30]Hex.
9.CM.05Yagiite(Na,K)3Mg4(Al,Mg)6(Si,Al)24O60Hex. 6/mmm (6/m 2/m 2/m)
9.CM.05BerezanskiteK□2Li3(Ti,Zr,Sn)2[Si12O30]Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
9.CM.05DusmatoviteK(Na,□)2(Zn,Li)3(Mn2+,Y,Zr)2[Si12O30]Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
9.CM.05AlmaruditeK(□,Na)2(Mn2+,Fe2+,Mg)2(Be,Al)3[Si12O30]Hex. 6/mmm (6/m 2/m 2/m) : P6/mmm
9.CM.05Trattnerite□(Fe3+,Mg,Fe2+)2(Mg,Fe2+,Fe3+)3(Si12O30)Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
9.CM.05OftedaliteK(Sc,Ca,Mn2+)2◻2[(Be,Al)3Si12O30]Hex. 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

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 ShibkoviteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva (1998): 127(4): 89-94.

Internet Links for ShibkoviteHide

Localities for ShibkoviteHide

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.
Tajikistan (TL)
 
  • Districts of Republican Subordination
http://www.koeln.netsurf.de/~w.steffens/dara.htm; Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva: 132(6): 15-21 (in Russian).
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