Tikhonenkovite Mineral Data

General Tikhonenkovite Information

Chemical Formula:

SrAl(OH)F4•(H2O)

Composition:

Molecular Weight = 225.62 gm

Strontium 38.84 % Sr 45.93 % SrO

Aluminum 11.96 % Al 22.60 % Al₂O₃

Hydrogen 1.34 % H 11.98 % H₂O

Oxygen 14.18 % O

Fluorine 33.68 % F 33.68 % F

- % F -14.18 % -O=F₂

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

SrAl(OH)F₄•(H₂O)

Environment:

In iron ores.

IMA Status:

Approved IMA 1964

Locality:

Karasug, Tannu-Ola range, Tuva, Russia. Link to MinDat.org Location Data.

Name Origin:

Named for Igor Tikhonenkov (1927-1961), Russian student of alkaline rocks and minerals.

Name Pronunciation:

Tikhonenkovite + Pronunciation

Synonym:

ICSD 23025

PDF 17-501

Tikhonenkovite Image

Images:

Tikhonenkovite

Comments: Colorless tikhonenkovite grain.
Location: Karasug Fe-REE-barite-fluorite Deposit, Tannu-Ola Range, Tuva Republic, Eastern-Siberian Region, Russia. Scale: Grain length 1.8 mm.
© Thomas Witzke / Abraxas-Verlag

Tikhonenkovite Crystallography

Axial Ratios:

a:b:c =0.822:1:0.4726

Cell Dimensions:

a = 8.73, b = 10.62, c = 5.02, Z = 4; beta = 102.43° V = 454.51 Den(Calc)= 3.30

Crystal System:

Monoclinic Space Group: Unk

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 4.89(1), 3.64(0.9), 3.27(0.8),

Physical Properties of Tikhonenkovite

Cleavage:

{001} Perfect

Color:

Colorless, Light pink.

Density:

3.26

Diaphaneity:

Transparent

Fracture:

Conchoidal - Uneven - Uneven fracture producing small, conchoidal fragments.

Habit:

Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).

Hardness:

3.5 - Copper Penny

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Tikhonenkovite

Optical Data:

Biaxial (-), a=1.452, b=1.456, g=1.458, bire=0.0060, 2V(Calc)=70, 2V(Meas)=70.

Calculated Properties of Tikhonenkovite

Electron Density:

Bulk Density (Electron Density)=3.10 gm/cc
note: Specific Gravity of Tikhonenkovite =3.30 gm/cc.

Fermion Index:

Fermion Index = 0.02
Boson Index = 0.98

Photoelectric:

PE_{Tikhonenkovite}= 44.23 barns/electron
U=PE_{Tikhonenkovite} x rElectron Density= 137.14 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Tikhonenkovite is Not Radioactive

Tikhonenkovite Classification

Dana Class:

11.06.16.01 (11)Halide Complexes; Alumino-fluorides

(11.06)with miscellaneous formulae

(11.06.16)Dana Group

11.06.16.01 Tikhonenkovite SrAl(OH)F4•(H2O) Unk Mono

Strunz Class:

03.CC.10 03 - HALIDES

03.C - Complex Halides

03.CC -Soro-aluminofluorides

03.CC.10 Acuminite SrAlF4(OH)•(H2O) C 2/c 2/m

03.CC.10 Tikhonenkovite SrAl(OH)F4•(H2O) Unk Mono

Other Tikhonenkovite Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Tikhonenkovite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - MinDAT
10 - Mineralienatlas (Deutsch)
11 - Online Mineral Museum
12 - QUT Mineral Atlas
13 - Ruff.Info

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Tikhonenkovite

SrAl(OH)F4•(H2O)
Dana No: 11.06.16.01 Strunz No: 03.CC.10
Locality:

Notes:

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