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Telyushenkoite

A valid IMA mineral species

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Photos of Telyushenkoite (7)Discuss Telyushenkoite

Telyushenkoite Gallery Search Photos of Telyushenkoite

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Telyushenkoite, etc.

Dara-i-Pioz Massif, Districts of Republican Subordination, Tajikistan

Telyushenkoite

Dara-i-Pioz Massif, Districts of Republican Subordination, Tajikistan

Telyushenkoite

Dara-i-Pioz Massif, Districts of Republican Subordination, Tajikistan

Telyushenkoite, etc.

Dara-i-Pioz Massif, Districts of Republican Subordination, Tajikistan

Telyushenkoite

Dara-i-Pioz Massif, Districts of Republican Subordination, Tajikistan

Telyushenkoite

Dara-i-Pioz Massif, Districts of Republican Subordination, Tajikistan

Telyushenkoite, etc.

Dara-i-Pioz Massif, Districts of Republican Subordination, Tajikistan

Telyushenkoite

Dara-i-Pioz Massif, Districts of Republican Subordination, Tajikistan

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About TelyushenkoiteHide

Formula:

(Cs,Na,K)Na₆[Be₂Al₃Si₁₅O₃₉]F₂

Colour:

Colourless to white

Lustre:

Vitreous

Hardness:

Specific Gravity:

2.73

Crystal System:

Trigonal

Member of:

Leifite Group

Name:

Honouring Tamara Matveyevna Telyushenko (Тамара Матвеевна Телюшенко) (1930 - 19 January 1997), Professor of Petrography in the Ashkhabad School of Geology.

Type Locality:

ⓘ Dara-i-Pioz Massif, Districts of Republican Subordination, Tajikistan

Leifite Group.
The cesium analogue of leifite and eirikite.

Unique IdentifiersHide

Mindat ID:

25600

Long-form identifier:

mindat:1:1:25600:3

IMA Classification of TelyushenkoiteHide

IMA status:

Approved

IMA Formula:

CsNa₆Be₂Al₃Si₁₅O₃₉F₂

Approval year:

2001

First published:

2003

Type description reference:

Agakhanov, Atali A., Pautov, Leonid A., Belakovskiy, Dmitriy I., Sokolova, Elena V., Hawthorne, Frank C. (2003) Telyushenkoite CsNa₆[Be₂(Si,Al,Zn)₁₈O₃₉F₂] – a new cesium mineral of the leifite group. New Data on Minerals, 38. Moscow. 5-8

Classification of TelyushenkoiteHide

Strunz-mindat (2026):

9.EH.25

9 : SILICATES (Germanates)
E : Phyllosilicates
H : Transitional structures between phyllosilicate and other silicate units

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Symbol	Source	Reference for Standard
Tys	IMA–CNMNC	Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of TelyushenkoiteHide

Lustre:

Vitreous

Transparency:

Transparent

Colour:

Colourless to white

Streak:

White

Hardness:

6 on Mohs scale

Hardness:

VHN₁₀₀=696 - 737 kg/mm² - Vickers

Cleavage:

Distinct/Good

Density:

2.73 g/cm³ (Measured) 2.73 g/cm³ (Calculated)

Optical Data of TelyushenkoiteHide

Type:

Uniaxial (+)

RI values:

n_ω = 1.526(2) n_ε = 1.531(2)

Max. Birefringence:

δ = 0.005
Based on recorded range of RI values above.

Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.

Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.

Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.

Thickness: 30 µm Order divisions

Rotation:

Surface Relief:

None to Very Low
Relative to Canada balsam mounting medium (n ≈ 1.537).

This shows the grain boundary and Becke line effect under plane-polarised light, based on the contrast between this mineral's average refractive index and the mounting medium. It does not take into account mineral colouration.

Focus:

In focus

Interference Figure:

This shows the idealized uniaxial interference figure - the conoscopic (convergent-light, Bertrand-lens-in) view, for a grain cut with the optic axis centred and vertical. The coloured rings are isochromatics, computed with the same physics as the Michel-Lévy bar above; the dark cross is the isogyre.

For a genuinely uniaxial mineral viewed this way, that cross stays perfectly stationary if you rotate the stage - unlike a biaxial mineral, where it splits apart on rotation. That invariance is itself the standard diagnostic test for telling uniaxial and biaxial minerals apart at the microscope.

Thickness: 30 µm

Chemistry of TelyushenkoiteHide

Mindat Formula:

(Cs,Na,K)Na₆[Be₂Al₃Si₁₅O₃₉]F₂

Element Weights:

Element	% weight
O	42.942 %
Si	28.993 %
Na	9.493 %
Cs	9.147 %
Al	5.571 %
F	2.615 %
Be	1.240 %

Calculated from ideal end-member formula.

Elements listed:

Al, Be, Cs, F, K, Na, O, Si - search for minerals with similar chemistry

Common Impurities:

Crystallography of TelyushenkoiteHide

Crystal System:

Trigonal

Class (H-M):

3m(32/m) - Hexagonal Scalenohedral

Space Group:

P31m

Setting:

P31m

Cell Parameters:

a = 14.377 Å, c = 4.878 Å

Ratio:

a:c = 1 : 0.339

Unit Cell V:

873.19 Å³ (Calculated from Unit Cell)

Morphology:

Equant grains to 2 cm.

Crystal StructureHide

Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4

View
CIF File Best | x | y | z | a | b | c

Rotation
Stop | Start

Labels
Console Off | On | Grey | Yellow

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)
0005761	Telyushenkoite	Sokolova E V, Huminicki D M C, Hawthorne F C, Agakhanov A A, Pautov L A, Grew E S (2002) The crystal chemistry of telyushenkoite and leifite, A Na6[Be2Al3Si15O39F2], A = Cs, Na The Canadian Mineralogist 40 183-192		2002		0	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Telyushenkoite'
loop_
_publ_author_name
'Sokolova E V'
'Huminicki D M C'
'Hawthorne F C'
'Agakhanov A A'
'Pautov L A'
'Grew E S'
_journal_name_full 'The Canadian Mineralogist'
_journal_volume 40 
_journal_year 2002
_journal_page_first 183
_journal_page_last 192
_publ_section_title
;
 The crystal chemistry of telyushenkoite and leifite, A Na6[Be2Al3Si15O39F2],
 A = Cs, Na
;
_database_code_amcsd 0005761
_chemical_formula_sum 'Si15.66 Al2.04 Zn.3 Be2 Na6.1 Cs.74 Rb.02 K.14 O39 F2'
_cell_length_a 14.3770
_cell_length_b 14.3770
_cell_length_c 4.8786
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 120
_cell_volume 873.298
_exptl_crystal_density_diffrn      2.739
_symmetry_space_group_name_H-M 'P -3 m 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '-y,-x,z'
  'y,-x+y,-z'
  '-x,-x+y,-z'
  '-x+y,-x,z'
  '-x+y,y,z'
  '-x,-y,-z'
  'y,x,-z'
  '-y,x-y,z'
  'x,x-y,z'
  'x-y,x,-z'
  'x-y,-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_U_iso_or_equiv
SiT1   0.00000   0.21677   0.50000   0.61000   0.01290
AlT1   0.00000   0.21677   0.50000   0.34000   0.01290
ZnT1   0.00000   0.21677   0.50000   0.05000   0.01290
SiT2   0.00000   0.34441   0.00000   1.00000   0.01050
SiT3   0.44759  -0.44759   0.30680   1.00000   0.00780
BeT4   0.33333   0.66667   0.36700   1.00000   0.00830
Na   0.75039  -0.75039   0.20290   1.00000   0.02120
CsA   0.00000   0.00000   0.00000   0.74000   0.02750
RbA   0.00000   0.00000   0.00000   0.02000   0.02750
KA   0.00000   0.00000   0.00000   0.14000   0.02750
NaA   0.00000   0.00000   0.00000   0.10000   0.02750
O1   0.10090  -0.10090   0.39200   1.00000   0.03400
O2   0.30810   0.26120   0.24730   1.00000   0.01930
O3   0.35970   0.45850   0.10470   1.00000   0.01270
O4   0.50000   0.00000   0.50000   1.00000   0.01450
O5   0.39440  -0.39440   0.48250   1.00000   0.01070
F   0.33333   0.66667   0.04380   1.00000   0.01360
loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_12
_atom_site_aniso_U_13
_atom_site_aniso_U_23
SiT1 0.01370 0.01430 0.01050 0.00680 -0.00150 -0.00070
AlT1 0.01370 0.01430 0.01050 0.00680 -0.00150 -0.00070
ZnT1 0.01370 0.01430 0.01050 0.00680 -0.00150 -0.00070
SiT2 0.01170 0.01060 0.00960 0.00580 -0.00040 -0.00020
SiT3 0.00920 0.00920 0.00740 0.00630 -0.00020 0.00020
BeT4 0.00820 0.00820 0.00860 0.00410 0.00000 0.00000
Na 0.02130 0.02130 0.01610 0.00720 0.00330 -0.00330
CsA 0.03120 0.03120 0.02000 0.01560 0.00000 0.00000
RbA 0.03120 0.03120 0.02000 0.01560 0.00000 0.00000
KA 0.03120 0.03120 0.02000 0.01560 0.00000 0.00000
NaA 0.03120 0.03120 0.02000 0.01560 0.00000 0.00000
O1 0.03490 0.03490 0.02000 0.00840 -0.00670 0.00670
O2 0.02290 0.01600 0.01870 0.00970 0.00890 0.00750
O3 0.01440 0.01120 0.01350 0.00720 -0.00380 -0.00300
O4 0.01860 0.00820 0.01320 0.00410 -0.00190 -0.00380
O5 0.01410 0.01410 0.00850 0.01060 0.00060 -0.00060
F 0.01750 0.01750 0.00580 0.00880 0.00000 0.00000

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
4.15 Å	(50)
3.38 Å	(75)
3.16 Å	(100)

Locality:

Dara-i-Pioz Massif, Districts of Republican Subordination, Tajikistan

Reference:

Geological EnvironmentHide

Paragenetic Mode(s):

Paragenetic Mode	Earliest Age (Ga)
Stage 4b: Highly evolved igneous rocks	>3.0
35 : Ultra-alkali and agpaitic igneous rocks

Type Occurrence of TelyushenkoiteHide

Type Locality:

ⓘ Dara-i-Pioz Massif, Districts of Republican Subordination, Tajikistan

General Appearance of Type Material:

Angular grains to 2 cm.

Place of Conservation of Type Material:

A.E. Fersman Mineralogical Museum, Russian Academy of Sciences, Moscow, Russia.

Geological Setting of Type Material:

Inclusions in coarse-grained blocks consisting mainly of reedmergnerite.

Associated Minerals at Type Locality:

Albite	Hyalotekite	Kentbrooksite	Microcline	Nordite-(Ce)
Pectolite	Polylithionite	Reedmergnerite	Shibkovite

Reference:

Synonyms of TelyushenkoiteHide

IMA2001-012

Other Language Names for TelyushenkoiteHide

Dutch:Telyushenkoiet

German:Telyushenkoit

Russian:Телюшенкоит

Simplified Chinese:氟铍硅铯钠石

Traditional Chinese:氟鈹矽銫鈉石

Relationship of Telyushenkoite to other SpeciesHide

Member of:

Leifite Group

Other Members of Leifite Group:

Eirikite	KNa₆Be₂(Si₁₅Al₃)O₃₉F₂	Trig. 3m(32/m) : P3m1
Leifite	(Na,H₂O)Na₆[Be₂Al₂(Al,Si)Si₁₅O₃₉]F₂	Trig. 3m : P3m1

Common AssociatesHide

Associations Based on Photo Data:

6 photos of Telyushenkoite associated with Reedmergnerite	NaBSi₃O₈
5 photos of Telyushenkoite associated with Shibkovite	K(◻K)Ca₂Zn₃[Si₁₂O₃₀]
1 photo of Telyushenkoite associated with Moskvinite-(Y)	Na₂KYSi₆O₁₅
1 photo of Telyushenkoite associated with Miserite	K_1.5-x(Ca,Y,REE)₅(Si₆O₁₅)(Si₂O₇)(OH,F)₂ · yH₂O
1 photo of Telyushenkoite associated with Pectolite	NaCa₂Si₃O₈(OH)
1 photo of Telyushenkoite associated with Aegirine	NaFe³⁺Si₂O₆

Related Minerals - Strunz-mindat Grouping Hide

9.EH.05	Manganoneptunite	KNa₂Li(Mn²⁺)₂Ti₂[Si₄O₁₂]₂	Mon. m : Bb
9.EH.05	Magnesioneptunite	KNa₂Li(Mg)₂Ti₂[Si₄O₁₂]₂	Mon. 2/m : B2/b
9.EH.05	Neptunite	KNa₂Li(Fe²⁺)₂Ti₂[Si₄O₁₂]₂	Mon. m : Bb
9.EH.05	Watatsumiite	KNa₂Li(Mn²⁺)₂V⁴⁺₂[Si₄O₁₂]₂	Mon. m : Bb
9.EH.05	Rotherkopfite	KNa₂Fe²⁺(Fe²⁺)₂(Ti_1.5Fe²⁺_0.5)[Si₄O₁₂]₂	Mon. 2/m : B2/b
9.EH.10	Grumantite	Na(HSi₂O₅) · H₂O	Orth. mm2 : Fdd2
9.EH.15	Sarcolite	Na₄Ca₁₂Al₈Si₁₂O₄₆(SiO₄,PO₄)(OH,H₂O)₄(CO₃,Cl)	Tet. 4/m : I4/m
9.EH.20	Ussingite	Na₂AlSi₃O₈OH	Tric. 1 : P1
9.EH.25	Leifite	(Na,H₂O)Na₆[Be₂Al₂(Al,Si)Si₁₅O₃₉]F₂	Trig. 3m : P3m1
9.EH.25	Eirikite	KNa₆Be₂(Si₁₅Al₃)O₃₉F₂	Trig. 3m(32/m) : P3m1
9.EH.30	Nafertisite	Na₃Fe²⁺₁₀Ti₂(Si₆O₁₇)₂O₂(OH)₆F(H₂O)₂	Mon. 2/m
9.EH.35	Veblenite	KNa(Fe²⁺₅Fe³⁺₄Mn₇)Nb₄(Si₂O₇)₂(Si₈O₂₂)₂O₆(OH)₁₀(H₂O)₃	Tric. 1 : P1

Fluorescence of TelyushenkoiteHide

In UV light:

Weak lilac fluorescence in short-wave UV light.

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.

Internet Links for TelyushenkoiteHide

mindat.org URL:

https://www.mindat.org/min-25600.html
Please feel free to link to this page.

Search Engines:

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External Links:

Look for Telyushenkoite on Webmineral

Look for Telyushenkoite on Wikipedia

Look for Telyushenkoite on Mineralien Atlas

Raman and XRD data at RRUFF project

References and PDF downloads at RRUFF project

American Mineralogist Crystal Structure Database

Handbook of Mineralogy page PDF

Mineral Dealers:

Buy from D. Joyce minerals

References for TelyushenkoiteHide

Reference List:

Sokolova, E., Huminicki, D. M.C., Hawthorne, F. C., Agakhanov, A. A., Pautov, L. A., Grew, E. S. (2002) The crystal chemistry of telyushenkoite and leifite, ANa6[Be2Al3Si15O39F2], A = Cs, Na. The Canadian Mineralogist, 40 (1) 183-192 doi:10.2113/gscanmin.40.1.183

Jambor, John L.; Grew, Edward J.; Roberts, Andrew C. (2004) New Mineral Names. American Mineralogist, 89 (10). 1574-1578

Mandarino, Joseph A. (2004) New minerals. The Canadian Mineralogist, 42 (4) 1241-1260 doi:10.2113/gscanmin.42.4.1241

(2007) New Minerals From Former Soviet Union Countries 1998-2006. Mineralogical Almanac Vol. 11

(2021) Telyushenkoite. Handbook of Mineralogy. Mineralogical Society of America

Localities for TelyushenkoiteHide

Showing 1 localities.

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.

Hide all sections | Show all sections

Locality ListHide

- This locality has map coordinates listed.

- This locality has estimated coordinates. ⓘ - Click for references and 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 (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.

Tajikistan (TL)

Districts of Republican Subordination

ⓘ Dara-i-Pioz Massif (TL)

Agakhanov et al. (2003) +1 other reference

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Telyushenkoite

About TelyushenkoiteHide

Unique IdentifiersHide

IMA Classification of TelyushenkoiteHide

Classification of TelyushenkoiteHide

Mineral SymbolsHide

Physical Properties of TelyushenkoiteHide

Optical Data of TelyushenkoiteHide

Chemistry of TelyushenkoiteHide

Crystallography of TelyushenkoiteHide

Crystal StructureHide

X-Ray Powder DiffractionHide

Geological EnvironmentHide

Type Occurrence of TelyushenkoiteHide

Synonyms of TelyushenkoiteHide

Other Language Names for TelyushenkoiteHide

Relationship of Telyushenkoite to other SpeciesHide

Common AssociatesHide

Related Minerals - Strunz-mindat GroupingHide

Fluorescence of TelyushenkoiteHide

Other InformationHide

Internet Links for TelyushenkoiteHide

References for TelyushenkoiteHide

Localities for TelyushenkoiteHide

Locality ListHide

Related Minerals - Strunz-mindat Grouping Hide