Tienshanite
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About Tienshanite

Darai-Pioz valley - the glacier moraine
Dara-i-Pioz Glacier, Districts of Republican Subordination, Tajikistan
Dara-i-Pioz Glacier, Districts of Republican Subordination, Tajikistan
Formula:
KNa3Na6Ca2Ba6Mn6(Ti4+,Nb)6B12Si36O114(O,OH,F)11
Colour:
Olive-green
Lustre:
Vitreous
Hardness:
6 - 6½
Crystal System:
Hexagonal
Name:
Named after its discovery locality, Dara-i-Pioz, Tien Shan Mountains, Tajikistan.
This page provides mineralogical data about Tienshanite.
Classification of Tienshanite
Approved
Approval year:
1967
8/E.20-10
9.CL.05
9 : SILICATES (Germanates)
C : Cyclosilicates
L : [Si6O18]12- branched 6-membered single rings
9 : SILICATES (Germanates)
C : Cyclosilicates
L : [Si6O18]12- branched 6-membered single rings
64.4.1.1
64 : CYCLOSILICATES Rings with Other Anions and Insular Silicate Groups
4 : Rings with Other Anions and Insular Silicate Groups: 6-membered rings with [Si2O7] dimers
64 : CYCLOSILICATES Rings with Other Anions and Insular Silicate Groups
4 : Rings with Other Anions and Insular Silicate Groups: 6-membered rings with [Si2O7] dimers
17.5.32
17 : Silicates Containing other Anions
5 : Borosilicates
17 : Silicates Containing other Anions
5 : Borosilicates
Physical Properties of Tienshanite
Optical Data of Tienshanite
Type:
Uniaxial (-)
RI values:
nω = 1.666 nε = 1.653
Max Birefringence:
δ = 0.013

Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Moderate
Chemical Properties of Tienshanite
Formula:
KNa3Na6Ca2Ba6Mn6(Ti4+,Nb)6B12Si36O114(O,OH,F)11
IMA Formula:
K(Na,K,◻)9Ca2Ba6Mn2+6Ti6B12Si36O114(O,OH,F)11
Elements listed:
Common Impurities:
Fe,Ta,Nb,Mg,Ca,K
Crystallography of Tienshanite
Crystal System:
Hexagonal
Class (H-M):
6/m - Dipyramidal
Space Group:
P6/m
Cell Parameters:
a = 16.785(2) Å, c = 10.454(1) Å
Ratio:
a:c = 1 : 0.623
Unit Cell V:
2550.7 ų
Z:
1
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
---|---|---|---|---|---|---|---|
0005580 | Tienshanite | Cooper M A, Hawthorne F C (1998) Refinement of the crystal structure of tienshanite: short-range-order constraints on chemical composition The Canadian Mineralogist 36 1305-1310 | ![]() | 1998 | 0 | 293 |
CIF Raw Data - click here to close
Type Occurrence of Tienshanite
Synonyms of Tienshanite
Other Language Names for Tienshanite
Common Associates
Associated Minerals Based on Photo Data:
1 photo of Tienshanite associated with Sogdianite | KZr2Li3Si12O30 |
Related Minerals - Hey's Chemical Index of Minerals Grouping
17.5.1 | Manandonite | Li2Al4(Si2AlB)O10(OH)8 | Orth. |
17.5.2 | Reedmergnerite | NaBSi3O8 | Tric. |
17.5.3 | Searlesite | Na(H2BSi2O7) | Mon. 2 : P21 |
17.5.4 | Olenite | Na(Al3)Al6(Si6O18)(BO3)3O3(OH) | Trig. 3m : R3m |
17.5.5 | Elbaite | Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH) | Trig. 3m : R3m |
17.5.6 | Kalborsite | K6Al4BSi6O20(OH)4Cl | Tet. |
17.5.7 | Boromuscovite | KAl2(BSi3O10)(OH)2 | Mon. |
17.5.8 | Poudretteite | KNa2B3Si12O30 | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
17.5.9 | Liddicoatite | Ca(Li2Al)Al6(Si6O18)(BO3)3(OH)3(OH) | Trig. 3m : R3m |
17.5.10 | Datolite | CaB(SiO4)(OH) | Mon. 2/m : P21/b |
17.5.11 | Danburite | CaB2Si2O8 | Orth. mmm (2/m 2/m 2/m) |
17.5.12 | Howlite | Ca2B5SiO9(OH)5 | Mon. 2/m : P21/b |
17.5.13 | Bakerite | Ca4(H5B5Si3O20) | Mon. 2/m : P21/b |
17.5.14 | Oyelite | Ca10Si8B2O29 · 12.5H2O | Orth. |
17.5.15 | Kornerupine | Mg3Al6(Si,Al,B)5O21(OH) | Orth. mmm (2/m 2/m 2/m) |
17.5.16 | Harkerite | Ca12Mg4Al(BO3)3(SiO4)4(CO3)5 · H2O | Trig. 3m (3 2/m) : R3m |
17.5.17 | Serendibite | Ca4[Mg6Al6]O4[Si6B3Al3O36] | Tric. 1 : P1 |
17.5.18 | Stillwellite-(Ce) | (Ce,La,Ca)BSiO5 | Trig. 3 : P31 |
17.5.19 | Tadzhikite-(Ce) | Ca4Ce3+2Ti◻(B4Si4O22)(OH)2 | Mon. |
17.5.20 | Melanocerite-(Ce) | (Ce,Ca)5(SiO4,BO4)3(OH,0) | Hex. |
17.5.21 | Okanoganite-(Y) | (Na,Ca)3(Y,Ce)12Si6B2O27F14 | Trig. 3m : R3m |
17.5.22 | Tritomite-(Ce) | Ce5(SiO4,BO4)3(OH,O) | |
17.5.23 | Tritomite-(Y) | Y5(SiO4,BO4)3(O,OH,F) | |
17.5.24 | Cappelenite-(Y) | Ba(Y,Ce)6Si3B6O24F2 | Trig. 3 : P3 |
17.5.25 | Dumortierite | (Al,Fe3+)7(SiO4)3(BO3)O3 | Orth. mmm (2/m 2/m 2/m) |
17.5.26 | Holtite | (Ta0.6◻0.4)Al6BSi3O18(O,OH)2.25 | Orth. mmm (2/m 2/m 2/m) : Pnma |
17.5.27 | Dravite | Na(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH) | Trig. 3m : R3m |
17.5.28 | Ferridravite | NaFe3+3(Mg2Fe3+4)(Si6O18)(BO3)3(OH)3O | |
17.5.29 | Axinite-(Mg) | Ca2MgAl2BSi4O15OH | Tric. |
17.5.30 | Fluor-uvite-Uvite Series | ||
17.5.31 | Garrelsite | Ba3NaSi2B7O16(OH)4 | Mon. |
17.5.33 | Leucosphenite | BaNa4Ti2B2Si10O30 | Mon. |
17.5.34 | Taramellite | Ba4(Fe3+,Ti,Fe2+,Mg)4(B2Si8O27)O2Clx | Orth. mmm (2/m 2/m 2/m) : Pmmn |
17.5.35 | Titantaramellite | Ba4(Ti,Fe3+,Fe2+,Mg)4(B2Si8O27)O2Clx | Orth. |
17.5.36 | Nagashimalite | Ba4(V,Ti)4B2Si8O27(O,OH)2Cl | Orth. mmm (2/m 2/m 2/m) : Pmmn |
17.5.37 | Chromium-dravite | Na(Mg3)Cr3+6(Si6O18)(BO3)3(OH)3(OH) | Trig. 3m : R3m |
17.5.38 | Wawayandaite | Ca6Mn2BBe9Si6O23(OH,Cl)15 | Mon. |
17.5.39 | Werdingite | (Mg,Fe)2Al14Si4B4O37 | Tric. |
17.5.40 | Axinite-(Mn) | Ca2Mn2+Al2BSi4O15(OH) | Tric. 1 : P1 |
17.5.41 | Axinite | Tric. | |
17.5.42 | Tinzenite | Ca2Mn2+4Al4[B2Si8O30](OH)2 | Tric. |
17.5.44 | Schorl | Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH) | Trig. 3m : R3m |
17.5.45 | Fluor-buergerite | Na(Fe3+3)Al6(Si6O18)(BO3)3O3F | Trig. 3m : R3m |
17.5.46 | Feruvite | Ca(Fe2+)3MgAl5(Si6O18)(BO3)3(OH)3(OH) | Trig. 3m : R3m |
17.5.47 | Axinite-(Fe) | Ca2Fe2+Al2BSi4O15OH | Tric. 1 : P1 |
17.5.48 | Homilite | Ca2(Fe2+,Mg)B2Si2O10 | Mon. 2/m : P21/b |
17.5.49 | Grandidierite | (Mg,Fe2+)(Al,Fe3+)3(SiO4)(BO3)O2 | Orth. mmm (2/m 2/m 2/m) |
17.5.50 | Hyalotekite | (Ba,Pb,K)4(Ca,Y)2(B,Be)2(Si,B)2Si8O28(F,Cl) | Tric. 1 : P1 |
17.5.51 | Hellandite-(Y) | (Ca,REE)4Y2Al◻2(B4Si4O22) (OH)2 | Mon. |
Other Information
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 Tienshanite
Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Dusmatov, V.D., Efimov, A.F., Alkhazov, V.Y., Kazakova, M.E., Mumyatskaya, N.G. (1967) Tienshanite — a new mineral. Doklady Akademii Nauk SSSR: 177: 678-680.
Doklady Akademii Nauk SSSR, Earth Science Sections: 177: 137-139.
Mandarino, J.A., Kato, A. (1968) New mineral names. American Mineralogist: 53: 1421-1427.
Grew, E.S., Belakovskiy, D.I., Fleet, M.E., Yates, M.G., McGee, J.J., Marquez, N. (1993) Reedmergnerite and associated minerals from peralkaline pegmatite, Dara-i-Pioz, southern Tien Shan, Tajikistan. European Journal of Mineralogy: 5: 971-984.
Grew, E.S., Anovitz, L.M. (1996) BORON: Mineralogy, Petrology and Geochemistry, second edition, as revised (2002).
Cooper, M.A., Hawthorne, F.C., Grew, E.S. (1998) Refinement of the crystal structure of tienshanite: short-range-order constraints on chemical composition. The Canadian Mineralogist: 36: 1305-1310.
Jambor, J.L., Roberts, A.C. (1999) New mineral names. American Mineralogist: 84: 1464-1468.
Internet Links for Tienshanite
mindat.org URL:
https://www.mindat.org/min-3958.html
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Localities for Tienshanite
Locality List




All localities listed without proper references should be considered as questionable.
Tajikistan (TL) | |
| Dusmatov, V.D., Efimov, A.F., Alkhazov, V.Y., Kazakova, M.E., Mumyatskaya, N.G. (1967) Tienshanite — a new mineral. Doklady Akademii Nauk SSSR: 177: 678-680.; Karpenko, V., & Pautov, L. (2002). Formation of baotite in alcaline rocks of a moraine of Dara-i-Pioz glacier, Tadjikistan. Neues Jahrbuch für Mineralogie-Monatshefte: 2002(10): 459-467. |
Dara-i-Pioz Glacier, Districts of Republican Subordination, Tajikistan