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Saryarka, Kazakshtan
Ca(Y,Th)Al5(SiO4)2(PO4,SO4)2(OH)7 · 6H2O
Greasy, Dull
3½ - 4
Specific Gravity:
3.07 - 3.15
Crystal System:
Originally named simply saryarkite after its discovery locality Saryarka, the Kazakh name for the steppes area of central Kazakhstan. The suffix was added by the IMA in 1987 to denote the mineral's yttrium content. Saryarka is a UNESCO world heritage site, containing two nature reserves that are important stops for millions of migratory birds.
This page provides mineralogical data about Saryarkite-(Y).

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Classification of Saryarkite-(Y)Hide

First Published:

D : Phosphates, etc. with additional anions, with H2O
O : With CO3, SO4, SiO4

53 : NESOSILICATES Insular SiO4 Groups and Other Anions or Complex Cations
2 : Insular SiO4 Groups and Other Anions of Complex Cations with (SO4), (CrO4), (PO4), etc·

17 : Silicates Containing other Anions
6 : Silicates with phosphate

Physical Properties of Saryarkite-(Y)Hide

Greasy, Dull
3½ - 4 on Mohs scale
3.07 - 3.15 g/cm3 (Measured)    3.35 g/cm3 (Calculated)

Optical Data of Saryarkite-(Y)Hide

Uniaxial (+)
RI values:
nω = 1.606 nε = 1.620
Max Birefringence:
δ = 0.014
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:

Chemical Properties of Saryarkite-(Y)Hide

Ca(Y,Th)Al5(SiO4)2(PO4,SO4)2(OH)7 · 6H2O
IMA Formula:
Ca(Y,Th)Al5(SiO4)2(PO4)2(OH)7 · 6H2O

Crystallography of Saryarkite-(Y)Hide

Crystal System:
Class (H-M):
4 2 2 - Trapezohedral
Cell Parameters:
a = 8.213(2) Å, c = 6.55(1) Å
a:c = 1 : 0.798
Unit Cell V:
441.82 ų (Calculated from Unit Cell)
Space group P4212 or P42212.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
3.45 Å(90)
3.01 Å(100)
2.827 Å(100)
2.564 Å(50)
2.143 Å(90)
1.854 Å(100)
1.312 Å(80)

Type Occurrence of Saryarkite-(Y)Hide

General Appearance of Type Material:
Needle-like, minute crystals; also massive.
Place of Conservation of Type Material:
Mining Institute, St. Petersburg, 978/1.
A. E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia, 72018, 72019.
Krol, O.F., Chernov, V.I., Shipovalov, Y.V., Khan, G.A. (1964) Saryarkite, a new mineral. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva: 93(2): 147-155.

Other Language Names for Saryarkite-(Y)Hide

Related Minerals - Nickel-Strunz GroupingHide

8.DO.05GirvasiteNaCa2Mg3(PO4)3(CO3)(H2O)6Mon. 2/m : P21/b
8.DO.10VoggiteNa2Zr(PO4)(CO3)(OH) · 2H2OMon.
8.DO.15PeisleyiteNa2Al9[(P,S)O4]8(OH)6•28H2OTric. 1 : P1
8.DO.20PerhamiteCa3Al7.7Si3P4O23.5(OH)14.1 · 8H2OTrig. 3m (3 2/m) : P3m1
8.DO.20KrásnoiteCa3Al7.7Si3P4O23.5(OH)12.1F2 · 8H2OTrig. 3m (3 2/m) : P3m1
8.DO.30Micheelsenite(Ca,Y)3Al(HPO4,CO3)(CO3)(OH)6 · 12H2OHex.
8.DO.40Parwanite(Na,K)(Mg,Ca)4Al8(PO4)8(CO3)(OH)7 · 30H2OMon. 2 : P2
8.DO.45SkorpioniteCa3Zn2(PO4)2(CO3)(OH)2 · H2OMon. 2/m : B2/b

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

17.6.1NagelschmidtiteCa7(SiO4)2(PO4)2Hex. 6 : P61
17.6.2PerhamiteCa3Al7.7Si3P4O23.5(OH)14.1 · 8H2OTrig. 3m (3 2/m) : P3m1
17.6.6Karnasurtite-(Ce)(Ce,La,Th)(Ti,Nb)(Al,Fe)(Si2O7)(OH)4 · 3H2O
17.6.8BornemaniteNa6BaTi2Nb(Si2O7)2(PO4)O2(OH)F Tric. 1 : P1
17.6.9SoboleviteNa13Ca2Mn2Ti3(Si2O7)2(PO4)4O3F3Mon. m : Pb
17.6.10Laplandite-(Ce)Na4CeTiPO4Si7O18 · 5H2O
17.6.11 VunonnemiteNa5TiNb3Si6O25F2 · 2Na3PO4
17.6.13Steenstrupine-(Ce)Na14Mn2+2(Fe3+,Mn3+)2Ce6(Zr,Th)(Si6O18)2(PO4)6(HPO4)(OH)2 · 2H2OTrig.
17.6.14WaylanditeBiAl3(PO4)2(OH)6Trig. 3m (3 2/m) : R3m
17.6.15Britholite-(Ce)(Ce,Ca)5(SiO4)3OHHex. 6/m : P63/m
17.6.16Britholite-(Y)(Y,Ca)5(SiO4)3OHHex. 6/m : P63/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 Saryarkite-(Y)Hide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Krol, O.F., Chernov, V.I., Shipovalov, Y.V., Khan, G.A. (1964) Saryarkite, a new mineral. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva: 93(2): 147-155.
Fleischer, M. (1964) New mineral names. American Mineralogist: 49: 1774-1778.
Nickel, E.H., Mandarino, J.A. (1987) Procedures involving the IMA Commission on New Minerals and Mineral Names and guidelines on mineral nomenclature. American Mineralogist: 72: 1031-1042.

Internet Links for Saryarkite-(Y)Hide

Localities for Saryarkite-(Y)Hide

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.
Kazakhstan (TL)
  • Karaganda Region
    • Shet
      • Mointy (Moyynty)
        • Mointy Railway Station
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
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