Donate now to keep mindat.org alive!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
The most common minerals on earthMineral PhotographyThe Elements and their Minerals
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 MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Tikhonenkovite

This page is currently not sponsored. Click here to sponsor this page.
Formula:
Sr[AlF4(OH)(H2O)]
Colour:
pale pink, colourless
Lustre:
Vitreous
Hardness:
Crystal System:
Monoclinic
Name:
Named after Igor Petrovich Tikhonenkov (1927-1961), Russian geologist specializing in alkaline rocks.
Dimorph of:
An aluminium complex salt. Chemically identical to acuminite.

Crystal structure is similar to that of acuminite. Difference: type of mutual connection of four Sr polyhedra. In tikhonenkovite it is one edge and two apex sharing connections; in acuminite - two edges and one apex are shared (Krogh Andersen et al., 1991).


Hide all sections | Show all sections

Classification of TikhonenkoviteHide

Approved
3.CC.10

3 : HALIDES
C : Complex halides
C : Soro-aluminofluorides
11.6.16.1

11 : HALIDE COMPLEXES
6 : Aluminofluorides - Isolated Octahedra
8.4.14

8 : Halides - Fluorides, Chlorides, Bromides and Iodides; also Fluoborates and Fluosilicates
4 : Halides of the alkaline earths and Mg

Physical Properties of TikhonenkoviteHide

Vitreous
Colour:
pale pink, colourless
Streak:
white
Hardness:
3½ on Mohs scale
Cleavage:
Perfect

Optical Data of TikhonenkoviteHide

Type:
Biaxial (-)
RI values:
nα = 1.452 nβ = 1.456 nγ = 1.458
2V:
Measured: 70° , Calculated: 70°
Max Birefringence:
δ = 0.006
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r > v distinct

Chemical Properties of TikhonenkoviteHide

Formula:
Sr[AlF4(OH)(H2O)]
IMA Formula:
SrAlF4(OH) · H2O

Crystallography of TikhonenkoviteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Setting:
P21/c
Cell Parameters:
a = 8.73 Å, b = 10.62 Å, c = 5.02 Å
β = 102.72°
Ratio:
a:b:c = 0.822 : 1 : 0.473
Unit Cell V:
453.99 ų (Calculated from Unit Cell)

Type Occurrence of TikhonenkoviteHide

Other Language Names for TikhonenkoviteHide

Related Minerals - Nickel-Strunz GroupingHide

3.CC.05GearksutiteCa[Al(F,OH)5(H2O)]Tric. 1 : P1
3.CC.10AcuminiteSr[AlF4(OH)(H2O)]Mon. 2/m : B2/b
3.CC.15ArtroeitePb[AlF3(OH)2]Tric. 1 : P1
3.CC.20CalcjarliteNa(Ca,Sr)3Al3(OH)2F14Mon.
3.CC.20JarliteNa(Sr,Na)7MgAl6F32(OH,H2O)2Mon. 2/m
3.CC.20JørgenseniteNa2(Sr,Ba)14Na2Al12F64(OH,F)4Mon. 2/m

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

8.4.1SellaiteMgF2Tet. 4/mmm (4/m 2/m 2/m) : P42/mnm
8.4.2NeighboriteNaMgF3Orth. mmm (2/m 2/m 2/m)
8.4.3BischofiteMgCl2 · 6H2OMon. 2/m : B2/m
8.4.4KorshunovskiteMg2Cl(OH)3 · 4H2OTric.
8.4.5CarnalliteKMgCl3 · 6H2OOrth. mmm (2/m 2/m 2/m) : Pnna
8.4.6TachyhydriteCaMg2Cl6 · 12H2OTrig.
8.4.7FluoriteCaF2Iso. m3m (4/m 3 2/m) : Fm3m
8.4.8SinjariteCaCl2 · 2H2OTet.
8.4.9AntarcticiteCaCl2 · 6H2OTrig. 3 2 : P3 2 1
8.4.10ChlorocalciteKCaCl3Orth. mmm (2/m 2/m 2/m) : Pnma
8.4.11RorisiteCaFClTet.
8.4.12JarliteNa(Sr,Na)7MgAl6F32(OH,H2O)2Mon. 2/m
8.4.13CalcjarliteNa(Ca,Sr)3Al3(OH)2F14Mon.
8.4.15AcuminiteSr[AlF4(OH)(H2O)]Mon. 2/m : B2/b
8.4.16FrankdicksoniteBaF2Iso. m3m (4/m 3 2/m) : Fm3m
8.4.17UsoviteBa2CaMgAl2F14Mon.
8.4.18BøgvaditeNa2SrBa2Al4F20Mon. 2/m

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 TikhonenkoviteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Khomyakov, A.P., Stepanov, V.I., Moleva, V.A. and Pudovkina, Z.V. (1964) The new mineral tikhonenkovite, SrAlF4(OH)•H2O. Doklady Akademii Nauk USSR: 156: 345-347. (in Russian)
American Mineralogist (1964): 49: 1774 (abstract).
Anthony, J.W., Bideaux, R.A., Bladh, K.W. and Nichols, M.C., Eds. Handbook of Mineralogy, Mineralogical Society of America, Chantilly, VA 20151-1110, USA. http://www.handbookofmineralogy.org/ (2016)
Krogh Andersen, E., Ploug-Sorensen, G., Leonardsen, E. (1991) The structure of acuminite, a strontium aluminium fluoride mineral. Zeitschrift für Kristallographie: 194: 221-227.

Internet Links for TikhonenkoviteHide

Localities for TikhonenkoviteHide

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.
Russia (TL)
 
  • Eastern-Siberian Region
    • Tuva Republic
      • Tannu-Ola Range
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
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: November 24, 2017 01:37:33 Page generated: October 1, 2017 04:56:44
Go to top of page