IMPORTANT MESSAGE. We need your support now to keep mindat.org running. Click here to find out why.
Log InRegister
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for Educators
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
StatisticsThe ElementsUsersBooks & MagazinesMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Telyushenkoite

This page is currently not sponsored. Click here to sponsor this page.
Hide all sections | Show all sections

About TelyushenkoiteHide

Formula:
(Cs,Na,K)Na6[F2|Be2Al3Si15O39]
Colour:
colourless to white
Lustre:
Vitreous
Hardness:
6
Specific Gravity:
2.73
Crystal System:
Trigonal
Member of:
Name:
Honouring Tamara Matveyevna Telyushenko (1930-1997), Professor of Petrography in the Ashkhabad School of Geology.
Leifite Group.
The cesium analogue of leifite and eirikite.


Classification of TelyushenkoiteHide

Approved
Approval Year:
2001
9.EH.25

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

Physical Properties of TelyushenkoiteHide

Vitreous
Transparency:
Transparent
Colour:
colourless to white
Streak:
white
Hardness:
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:
nω = 1.526() nε = 1.531(2)
Max Birefringence:
δ = 0.005
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Low

Chemical Properties of TelyushenkoiteHide

Formula:
(Cs,Na,K)Na6[F2|Be2Al3Si15O39]
IMA Formula:
CsNa6Be2Al3Si15O39F2
Common Impurities:
Zn

Crystallography of TelyushenkoiteHide

Crystal System:
Trigonal
Class (H-M):
3m (3 2/m) - Hexagonal Scalenohedral
Space Group:
P3 1m
Setting:
P3 1m
Cell Parameters:
a = 14.377 Å, c = 4.878 Å
Ratio:
a:c = 1 : 0.339
Unit Cell V:
873.19 ų (Calculated from Unit Cell)
Z:
1
Morphology:
Equant grains to 2 cm.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
4.15 (50)
3.38 (75)
3.16 (100)

Type Occurrence of TelyushenkoiteHide

General Appearance of Type Material:
angular grains to 2 cm
Geological Setting of Type Material:
inclusions in coarse-grained blocks consisting mainly of reedmergnerite
Associated Minerals at Type Locality:

Synonyms of TelyushenkoiteHide

Other Language Names for TelyushenkoiteHide

Simplified Chinese:氟铍硅铯钠石
Traditional Chinese:氟鈹矽銫鈉石

Relationship of Telyushenkoite to other SpeciesHide

Member of:
Other Members of this group:
EirikiteKNa6Be2(Si15Al3)O39F2Trig. 3m (3 2/m) : P3m1
Leifite(Na,H2O)Na6[Be2Al2(Al,Si)Si15O39]F2Trig. 3m : P3m1

Common AssociatesHide

Associated Minerals Based on Photo Data:
Reedmergnerite4 photos of Telyushenkoite associated with Reedmergnerite on mindat.org.
Shibkovite2 photos of Telyushenkoite associated with Shibkovite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

9.EH.05ManganoneptuniteNa2KLiMn2+2Ti2Si8O24Mon.
9.EH.05NeptuniteNa2KLiFe2+2Ti2Si8O24Mon. m : Bb
9.EH.05WatatsumiiteNa2KLi(Mn2+,Fe2+)2V4+2[Si8O24]Mon.
9.EH.05MagnesioneptuniteKNa2Li(Mg,Fe)2Ti2Si8O24Mon. 2/m : B2/b
9.EH.10GrumantiteNa(HSi2O5) · H2OOrth. mm2 : Fdd2
9.EH.15SarcoliteNa4Ca12Al8Si12O46(SiO4,PO4)(OH,H2O)4(CO3,Cl)Tet.
9.EH.20UssingiteNa2AlSi3O8OHTric. 1 : P1
9.EH.25Leifite(Na,H2O)Na6[Be2Al2(Al,Si)Si15O39]F2Trig. 3m : P3m1
9.EH.25EirikiteKNa6Be2(Si15Al3)O39F2Trig. 3m (3 2/m) : P3m1
9.EH.30NafertisiteNa3Fe2+10Ti2(Si6O17)2O2(OH)6F(H2O)2Mon. 2/m

Fluorescence of TelyushenkoiteHide

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.

References for TelyushenkoiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Sokolova E. et al. (2002), Canadian Mineralogist: 40: 183-192.
Agakhanov A.A. et al. (2003), New Data on Minerals, 38, 5-8.

Internet Links for TelyushenkoiteHide

Localities for TelyushenkoiteHide

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)
 
  • Region of Republican Subordination
    • Tien Shan Mtn
      • Alai Range (Alayskiy)
Lapis 29(1), 47 (2004); Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva: 132(6): 15-21 (in Russian).; Agakhanov, A.A., Pautov, L.A., Sokolova, E., Hawthorne, F.C., Karpenko, V.Yu., Siidra, O.I., Muftakhov, V.A. (2016): Odigitriaite, CsNa5Ca5[Si14B2O38]F2, a new cesium borosilicate mineral from the Darai-Pioz alkaline massif, Tajikistan: Description and crystal structure. Mineralogical Magazine, 80, (in press).
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2018, except where stated. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: October 20, 2018 23:12:53 Page generated: October 7, 2018 11:17:49
Go to top of page