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Saryarkite-(Y)

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Formula:
Ca(Y,Th)Al5(SiO4)2(PO4,SO4)2(OH)7 · 6H2O
Colour:
White
Lustre:
Greasy, Dull
Hardness:
3½ - 4
Crystal System:
Tetragonal
Name:
Named after its discovery locality Saryarka, the Kazakh name for the steppes area of central Kazakhstan, and for its
high yttrium content.
This page provides mineralogical data about Saryarkite-(Y).


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Classification of Saryarkite-(Y)Hide

Approved
8.DO.25

8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
O : With CO3, SO4, SiO4
53.2.1.1

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·
17.6.12

17 : Silicates Containing other Anions
6 : Silicates with phosphate

Physical Properties of Saryarkite-(Y)Hide

Greasy, Dull
Colour:
White
Hardness:
3½ - 4 on Mohs scale

Optical Data of Saryarkite-(Y)Hide

Type:
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:
Moderate

Chemical Properties of Saryarkite-(Y)Hide

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

X-Ray Powder DiffractionHide

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

Type Occurrence of Saryarkite-(Y)Hide

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
17.6.3Viséite
17.6.4PhosinaiteNa13Ca2(Ce,La,Th,Nd,Pr)(Si4O12)(PO4)4
17.6.5ClinophosinaiteNa12(Ca,Sr)4(Si4O12)(PO4)4Mon.
17.6.6Karnasurtite-(Ce)(Ce,La,Th)(Ti,Nb)(Al,Fe)(Si2O7)(OH)4 · 3H2O
17.6.7LomonosoviteNa5Ti2(Si2O7)(PO4)O2Tric.
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
17.6.17EylettersiteTh0.75Al3(PO4)2(OH)6Trig.

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)
American Mineralogist (1964): 49: 1775.

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 District
      • Mointy (Moyynty)
        • Mointy Railway Station
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
Mineral and/or Locality  
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