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Pyatenkoite-(Y)

Formula:
Na
 
5
YTi[SiO
 
3
]
 
6
 · 6H
 
2
O
System:TrigonalColour:Colourless
Lustre:VitreousHardness:4 - 5
Name:For Yu. A. Pyatenko (1928-), prominent Russian crystal chemist.


Hilairite Group

Classification of Pyatenkoite-(Y)

IMA status:Approved
Strunz 8th edition ID:8/F.29-24
Nickel-Strunz 10th (pending) edition ID:9.DM.10

9 : SILICATES (Germanates)
D : Inosilicates
M : Inosilicates with 6-periodic single chains
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Type Occurrence of Pyatenkoite-(Y)

Type Locality:Alluaiv Mt, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia

Physical Properties of Pyatenkoite-(Y)

Lustre:Vitreous
Diaphaneity (Transparency):Transparent
Colour:Colourless
Hardness (Mohs):4 - 5

Crystallography of Pyatenkoite-(Y)

Crystal System:Trigonal

Optical Data of Pyatenkoite-(Y)

Type:Uniaxial (-)
RI values: nω = 1.612 nε = 1.607
Maximum Birefringence:δ = 0.005

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate

Chemical Properties of Pyatenkoite-(Y)

Formula:
Na
 
5
YTi[SiO
 
3
]
 
6
 · 6H
 
2
O
Essential elements:H, Na, O, Si, Ti, Y
All elements listed in formula:H, Na, O, Si, Ti, Y

Relationship of Pyatenkoite-(Y) to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
9.DM.05Stokesite
CaSn[Si
 
3
O
 
9
] · 2H
 
2
O
9.DM.10Calciohilairite
CaZr[SiO
 
3
]
 
3
·3H
 
2
O
9.DM.10Hilairite
Na
 
2
Zr[SiO
 
3
]
 
3
·3H
 
2
O
9.DM.10Komkovite
BaZr[Si
 
3
O
 
9
]·3H
 
2
O
9.DM.10Sazykinaite-(Y)
Na
 
5
YZr[SiO
 
3
]
 
6
 · 6H
 
2
O
9.DM.15Gaidonnayite
Na
 
2
Zr[Si
 
3
O
 
9
]·2H
 
2
O
9.DM.15Georgechaoite
NaKZr[Si
 
3
O
 
9
]·2H
 
2
O
9.DM.20Chkalovite
Na
 
2
BeSi
 
2
O
 
6
9.DM.25Vlasovite
Na
 
2
ZrSi
 
4
O
 
11
9.DM.30Revdite
Na
 
16
Si
 
16
O
 
27
(OH)
 
26
·28H
 
2
O
9.DM.35Scheuchzerite
Na(Mn,Mg,Zn)
 
9
[VSi
 
9
O
 
28
(OH)](OH)
 
3
9.DM.40Terskite
Na
 
4
ZrSi
 
6
O
 
16
·2H
 
2
O

Other Names for Pyatenkoite-(Y)

Synonyms:
IMA1995-034
Other Languages:
German:Pyatenkoit-(Y)
Russian:Пятенкоит-(Y)

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 Pyatenkoite-(Y)

Reference List:Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva (1996): 125(4): 72-79.

Mineralogical Record: 28: 222-223.

Internet Links for Pyatenkoite-(Y)

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    Localities for Pyatenkoite-(Y)

    (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
     
    • Northern Region
      • Murmanskaja Oblast'
        • Kola Peninsula
          • Khibiny Massif
    		Pekov, I.V. & Podlesnyi, A.S. (2004): Kukisvumchorr Deposit: Mineralogy of Alkaline Pegmatites and Hydrotermalites. Mineralogical Almanac, vol. 7, 140 pages + xxiv photo's pages
          • Lovozero Massif
    		Khomyakov A.P., Nechelyustov G.N., Rastsvetaeva R.K. (1996); Pekov I.V., Chukanov N.V., Kononkova N.N., Pushcharovsky D.Yu. (2003); Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
    Mineral and/or Locality
    Google
     
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