Help mindat.org|Log In|Register|
Home PageMindat NewsThe Mindat ManualHistory of MindatCopyright StatusManagement TeamContact UsAdvertise on Mindat
Donate to MindatSponsor a PageSponsored PagesTop Available PagesMindat AdvertisersAdvertise on Mindat
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralSearch 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 ElementsMember ListBooks & MagazinesMineral Shows & EventsThe Mindat DirectoryHow to Link to MindatDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Senkevichite

This page is currently not sponsored. Click here to sponsor this page.
Senkevichite, etc.

Darai-Pioz Glacier, Alai Range, Tien Shan Mtn, Region of Republican Subordination, Tajikistan
Senkevichite, etc.

Darai-Pioz Glacier, Alai Range, Tien Shan Mtn, Region of Republican Subordination, Tajikistan
Senkevichite, etc.

Darai-Pioz Glacier, Alai Range, Tien Shan Mtn, Region of Republican Subordination, Tajikistan
Formula:
CsKNaCa2TiOSi7O18(OH)
System:
Triclinic
Colour:
Colorless
Lustre:
Vitreous
Hardness:
5½ - 6
Name:
Named by Atali A. Agakhanov, Leonid A. Pautov, Yulia A. Uvarova, Elena, V. Sokolova, Franck C. Hawthorne, Vladimir Yu. Karpenko in 2005 in honor of Yurii Alekseevich Senkevich (4 March 1937, Choibalsan, Mongolia – 25 September 2003, Moscow, Russia) (alternate spellings, Yuri Aleksandrovich Senkevich, Юрий Александрович Сенкевич), "outstanding Russian traveller, medical officer, researcher of the behavior of the human organism in extreme conditions, famous TV reporter and journalist."
Isostructural with:
Tinaksite, Tokkoite
Cs analogue of Tinaksite


Classification of Senkevichite

IMA status:
Approved
Approval Year:
2004
Strunz 8th ed.:
8/F.22-40
Nickel-Strunz 10th (pending) ed.:
9.DG.75

9 : SILICATES (Germanates)
D : Inosilicates
G : Inosilicates with 3-periodic single and multiple chains

Physical Properties of Senkevichite

Lustre:
Vitreous
Diaphaneity (Transparency):
Transparent
Colour:
Colorless
Hardness (Mohs):
5½ - 6
Hardness (Vickers):
VHN100=611 - 708 kg/mm2
Tenacity:
Brittle
Density:
3.12(2) g/cm3 (Measured)    3.13 g/cm3 (Calculated)

Optical Data of Senkevichite

Type:
Biaxial (+)
RI values:
nα = 1.616(2) nβ = 1.645(2) nγ = 1.638(2)
2V:
Measured: 85° (2), Calculated: 84°
Max Birefringence:
δ = 0.022
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
Strong r < v

Chemical Properties of Senkevichite

IMA Formula:
CsKNaCa2TiOSi7O18(OH)
Elements listed in formula:
Ca, Cs, H, K, Na, O, Si, Ti - search for minerals with similar chemistry
Analytical Data:
Results from electron-microprobe analysis; water content calculated from crystal structure analysis
SiO2  (51.08)
TiO2   (8.94)
FeO    (0.50)
MnO    (2.59)
CaO   (10.98)
K2O    (6.13)
Na2O   (3.76)
Nb2O5  (0.64)
Cs2O  (15.28)
H2O    (1.09)

sum   100.99 wt.-%

Crystallography of Senkevichite

Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 10.4191 Å, b = 12.2408 Å, c = 7.0569 Å
α = 90.857°, β = 99.193°, γ = 91.895°
Ratio:
a:b:c = 0.851 : 1 : 0.577
Unit Cell Volume:
V 887.8 ų
Z:
2
X-Ray Powder Diffraction Data:
d-spacingIntensity
4.08(13)
3.33(11)
3.25(16)
3.14(21)
3.06(100)
2.959(20)
2.038(17)
Comments:
From type description.

Type Occurrence of Senkevichite

Type Locality:
Darai-Pioz Glacier (Dara-i-Pioz; Dara-Pioz), Alai Range (Alayskiy), Tien Shan Mtn, Region of Republican Subordination, Tajikistan

Relationship of Senkevichite to other Species

Related Minerals - Nickel-Strunz Grouping):
9.DG.05BustamiteCaMn2+Si2O6
9.DG.05FerrobustamiteCaFe2+Si2O6
9.DG.05PectoliteNaCa2Si3O8(OH)
9.DG.05SeranditeNaMn22+Si3O8(OH)
9.DG.05WollastoniteCaSiO3
9.DG.05Wollastonite-1ACaSiO3
9.DG.07CascanditeCaScSi3O8(OH)
9.DG.08PlombièriteCa5Si6O16(OH)2 · 7H2O
9.DG.10ClinotobermoriteCa5Si6O17 · 5H2O
9.DG.10RiversideiteCa5Si6O16(OH)2 · 2H2O
9.DG.10TobermoriteCa5Si6O16(OH)2 · nH2O
9.DG.15FoshagiteCa4(SiO3)3(OH)2
9.DG.20JenniteCa9Si6O16(OH)10 · 6H2O
9.DG.25ParaumbiteK3Zr2H(Si3O9)2 · 3H2O
9.DG.25UmbiteK2ZrSi3O9 · H2O
9.DG.30SørenseniteNa4Be2Sn(Si3O9)2 · 2H2O
9.DG.35XonotliteCa6Si6O17(OH)2
9.DG.40HillebranditeCa2SiO3(OH)2
9.DG.45ZoriteNa6Ti5Si12O34(O,OH)5 · 11H2O
9.DG.45ChivruaiiteCa4(Ti,Nb)5(Si6O17)2(OH,O)5 · 13-14H2O
9.DG.50Haineaultite(Na,Ca)5Ca(Ti,Nb)5Si12O34(OH,F)8 · 5H2O
9.DG.55EpididymiteNa2Be2Si6O15 · H2O
9.DG.60EudidymiteNa2Be2Si6O15 · H2O
9.DG.65ElpiditeNa2ZrSi6O15 · 3H2O
9.DG.70FenaksiteKNaFe2+Si4O10
9.DG.70LitidioniteKNaCuSi4O10
9.DG.70ManaksiteKNaMn2+Si4O10
9.DG.75TinaksiteK2Na(Ca,Mn)2TiOSi7O18(OH)
9.DG.75TokkoiteK2Ca4Si7O18(OH)F
9.DG.80CanasiteK3Na3Ca5Si12O30(OH)4
9.DG.80FluorcanasiteK3Na3Ca5Si12O30F4 · H2O
9.DG.85MiseriteKCa6Si8O22(OH)
9.DG.90FrankameniteK3Na3Ca5Si12O30(F,OH)4 · H2O
9.DG.92Charoite(K,Sr,Ba,Mn)15-16(Ca,Na)32Si70(O,OH)180(OH,F)4 · nH2O
9.DG.95YuksporiteK4(Ca,Na)14(Sr,Ba)2(◻,Mn,Fe)(Ti,Nb)4(O,OH)4(Si6O17)2(Si2O7)3(H2O,OH)3
9.DG.97Eveslogite(Ca,K,Na,Sr,Ba)48(Ti,Nb,Fe,Mn)12(OH)12Si48O144(OH,F,Cl)14

Other Names for Senkevichite

Synonyms:

IMA2004-017

Name in Other Languages:

Other Information

Other Information:
Insoluble in water or HCl
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 Senkevichite

Reference List:
Agakhanov, A.A., Pautov, L.A., Uvarova, Y.A., Sokolova, E.V., Hawthorne, F.C., Karpenko, V.Yu. (2005) Senkevichite, CsKNaCa2TiO[Si7O18(OH)], a new mineral. New Data on Minerals: 40: 17-22.

Uvarova, Yu.A., Sokolova, E., Hawthorne, F.C., Agakhanov, A.A., Pautov, L.A., Karpenko, V.Yu. (2006) The crystal chemistry of senkevichite, CsKNaCa2TiO[Si7O18(OH)], from the Dara-i-Poiz alkaline massif, northern Tajikistan. Canadian Mineralogist: 44: 1341-1348.

Pekov, I.V. (2007) New minerals from former Soviet Union countries, 1998-2006: new minerals approved by the IMA commission on new minerals and mineral names. Mineralogical Almanac: 11: 9-51.

Internet Links for Senkevichite

mindat.org URL:
https://www.mindat.org/min-27468.html
Please feel free to link to this page.
Search Engines:
  • Look for Senkevichite on Google
  • Look for Senkevichite images on Google
    • External Links:
  • Look for Senkevichite on Webmineral
  • Look for Senkevichite on Wikipedia
  • Look for Senkevichite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Handbook of Mineralogy page PDF
    • Mineral Dealers:
  • Buy from David K Joyce minerals
  • Buy rare minerals from Excalibur Minerals
  • Wilensky Fine Minerals
  • Senkevichite specimens for sale - minfind.com
  • Minerals from Australia and beyond - RocknCrystals
  • Find Senkevichite on www.crystalclassics.co.uk
  • Fine Minerals from Weinrich Minerals, Inc.
  • The Arkenstone - Fine Minerals
  • MINSERVICE - buy on www.minservice.com - Worldwide Classical and Rarity
  • Quality Minerals at Fair Prices
  • Rare and Unusual minerals at Mineralogical Research Company
  • Buy RARE Minerals from Rocks of Africa
  • Buy from McDougall Minerals

    • Localities for Senkevichite

    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.
    (TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Tajikistan (TL)
     
    • Region of Republican Subordination
      • Tien Shan Mtn
        • Alai Range (Alayskiy)
    		Agakhanov, A.A., Pautov, L.A., Uvarova, Y.A., Sokolova, E.V., Hawthorne, F.C., Karpenko, V.Yu. (2005): Senkevichite, CsKNaCa2TiO[Si7O18(OH)], a new mineral. New Data on Minerals, 40, 11-16; 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 1993-2017, 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: September 20, 2017 06:49:40 Page generated: June 11, 2017 20:49:39
    Go to top of page