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Tikhonenkovite

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Big Photo

Karasug REE-Sr-Ba-Fe-fluorite deposit, Tannu-Ola Range, Tuva Republic, Eastern-Siberian Region, Russia
© Pavel M. Kartashov

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Formula:
Sr[AlF
 
4
(OH)(H
 
2
O)]
System:MonoclinicColour:pale pink, colourless
Hardness:3½
Name:Named after Igor Petrovich Tikhonenkov (1927-1961), Russian geologist specializing in alkaline rocks.


An aluminium complex salt

Classification of Tikhonenkovite

IMA status:Approved
Strunz 8th edition ID:3/C.01-30
Nickel-Strunz 10th (pending) edition ID:3.CC.10

3 : HALIDES
C : Complex halides
C : Soro-aluminofluorides
Dana 8th edition ID:11.6.16.1

11 : HALIDE COMPLEXES
6 : Aluminofluorides - Isolated Octahedra
Hey's CIM Ref.:8.4.14

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

Type Locality:Karasug REE-Sr-Ba-Fe-fluorite deposit, Tannu-Ola Range, Tuva Republic, Eastern-Siberian Region, Russia
Year of Discovery:1964

Physical Properties of Tikhonenkovite

Lustre:Vitreous
Colour:pale pink, colourless
Streak:white
Hardness (Mohs):3½
Cleavage:Perfect

Crystallography of Tikhonenkovite

Crystal System:Monoclinic
Cell Parameters:a = 8.73Å, b = 10.62Å, c = 5.02Å
β = 102.72°
Ratio:a:b:c = 0.822 : 1 : 0.473
Unit Cell Volume:V 453.99 ų (Calculated from Unit Cell)

Optical Data of Tikhonenkovite

Type:Biaxial (-)
RI values: nα = 1.452 nβ = 1.456 nγ = 1.458
2V:Measured: 70° , Calculated: 70°
Maximum Birefringence:δ = 0.006

Chart 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 Tikhonenkovite

Formula:
Sr[AlF
 
4
(OH)(H
 
2
O)]
Essential elements:Al, F, H, O, Sr
All elements listed in formula:Al, F, H, O, Sr

Relationship of Tikhonenkovite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
3.CC.05Gearksutite
Ca[Al(F,OH)
 
5
(H
 
2
O)]
3.CC.10Acuminite
Sr[AlF
 
4
(OH)(H
 
2
O)]
3.CC.15Artroeite
Pb[AlF
 
3
(OH)
 
2
]
3.CC.20Calcjarlite
Na(Ca,Sr)
 
3
Al
 
3
(OH)
 
2
F
 
14
3.CC.20Jarlite
Na(Sr,Na)
 
7
MgAl
 
6
F
 
32
(OH,H
 
2
O)
 
2
3.CC.20Jørgensenite
Na
 
2
(Sr,Ba)
 
14
Na
 
2
Al
 
12
F
 
64
(OH,F)
 
4
Related Minerals - Hey's Index Grouping:

- +
8.4.1Sellaite
MgF
 
2
8.4.2Neighborite
NaMgF
 
3
8.4.3Bischofite
MgCl
 
2
 · 6H
 
2
O
8.4.4Korshunovskite
Mg
 
2
Cl(OH)
 
3
 · 4H
 
2
O
8.4.5Carnallite
KMgCl
 
3
 · 6H
 
2
O
8.4.6Tachyhydrite
CaMg
 
2
Cl
 
6
 · 12H
 
2
O
8.4.7Fluorite
CaF
 
2
8.4.8Sinjarite
CaCl
 
2
 · 2H
 
2
O
8.4.9Antarcticite
CaCl
 
2
 · 6H
 
2
O
8.4.10Chlorocalcite
KCaCl
 
3
8.4.11Rorisite
CaFCl
8.4.12Jarlite
Na(Sr,Na)
 
7
MgAl
 
6
F
 
32
(OH,H
 
2
O)
 
2
8.4.13Calcjarlite
Na(Ca,Sr)
 
3
Al
 
3
(OH)
 
2
F
 
14
8.4.15Acuminite
Sr[AlF
 
4
(OH)(H
 
2
O)]
8.4.16Frankdicksonite
BaF
 
2
8.4.17Usovite
Ba
 
2
CaMgAl
 
2
F
 
14
8.4.18Bøgvadite
Na
 
2
SrBa
 
2
Al
 
4
F
 
20

Other Names for Tikhonenkovite

Other Languages:
German:Tikhonenkovit
Russian:Тихоненковит
Spanish:Tikhonenkovita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Tikhonenkovite

Reference List:

- +
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).

Internet Links for Tikhonenkovite

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    • Localities for Tikhonenkovite

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    (TL) indicates type locality. ? 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.
    Russia
     
    • 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
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