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NaSr3CaY(CO3)6 · 3H2O
Member of:
Named in 1978 by G.Y. Chao, P.R. Mainwaring and J. Baker for Joseph Donnay (Oreye, Liège province, Belgium, June 6 1902 - Mont Saint Hilaire, Quebec, August 8 1994) and his wife Gabrielle (Gai) Donnay-Hamburger. Was professor at the Johns Hopkins university.
Two polytypes are known, donnayite-(Y)-1A and donnayite-(Y)-3R.

Classification of Donnayite-(Y)


C : Carbonates without additional anions, with H2O
C : With rare earth elements (REE)

3 : AmBn(XO3)p·xH2O, with (m+n):p = 1:1

11 : Carbonates
8 : Carbonates of the rare earths

Physical Properties of Donnayite-(Y)

Hardness (Mohs):

Optical Data of Donnayite-(Y)

Biaxial (-)
RI values:
nα = 1.551 - 1.561 nβ = 1.646 nγ = 1.652
Calculated: 26° to 28°
Max Birefringence:
δ = 0.101
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
r > v strong

Chemical Properties of Donnayite-(Y)

IMA Formula:
NaSr3CaY(CO3)6 · 3H2O
Elements listed in formula:

Crystallography of Donnayite-(Y)

Crystal System:
Class (H-M):
1 - Pedial
Space Group:
Cell Parameters:
a = 9.000 Å, b = 8.999 Å, c = 6.793 Å
α = 102.77°, β = 116.28°, γ = 59.99°
a:b:c = 1 : 1 : 0.755
Unit Cell Volume:
V 427.17 ų (Calculated from Unit Cell)

Type Occurrence of Donnayite-(Y)

Place of Conservation of Type Material:
Canadian Museum of Nature, Ottawa
Royal Ontario Museum, Toronto
National Museum of Natural History, Washington

Relationship of Donnayite-(Y) to other Species

Member of:
Other Members of Group:
EwalditeBa(Na,Ca,Y,Ce,K)(CO3)2 · 2.6H2O
Mckelveyite-(Y)NaCaBa3Y(CO3)6 · 3H2O
WeloganiteNa2Sr3Zr(CO3)6 · 3H2O
5.CC.05EwalditeBa(Na,Ca,Y,Ce,K)(CO3)2 · 2.6H2O
5.CC.05Mckelveyite-(Nd)(Ba,Sr)(Nd,Ce,La)(CO3)2 · 4-10H2O
5.CC.05Mckelveyite-(Y)NaBa3(Ca,U)Y(CO3)6 · 3H2O
5.CC.05WeloganiteNa2Sr3Zr(CO3)6 · 3H2O
5.CC.10Tengerite-(Y)Y2(CO3)3 · 2-3H2O
5.CC.15Kimuraite-(Y)CaY2(CO3)4 · 6H2O
5.CC.15Lokkaite-(Y)CaY4(CO3)7 · 9H2O
5.CC.20Shomiokite-(Y)Na3Y(CO3)3 · 3H2O
5.CC.25Calkinsite-(Ce)Ce2(CO3)3 · 4H2O
5.CC.25Lanthanite-(Ce)Ce2(CO3)3 · 8H2O
5.CC.25Lanthanite-(La)La2(CO3)3 · 8H2O
5.CC.25Lanthanite-(Nd)Nd2(CO3)3 · 8H2O
5.CC.30Adamsite-(Y)NaY(CO3)2 · 6H2O
5.CC.35Decrespignyite-(Y)Y4Cu(CO3)4Cl(OH)5 · 2H2O
5.CC.40Galgenbergite-(Ce)CaCe2(CO3)4 · H2O
11.8.1Calkinsite-(Ce)Ce2(CO3)3 · 4H2O
11.8.2Lanthanite-(La)La2(CO3)3 · 8H2O
11.8.3Lanthanite-(Ce)Ce2(CO3)3 · 8H2O
11.8.4Lanthanite-(Nd)Nd2(CO3)3 · 8H2O
11.8.9Tengerite-(Y)Y2(CO3)3 · 2-3H2O
11.8.10Kimuraite-(Y)CaY2(CO3)4 · 6H2O
11.8.11Lokkaite-(Y)CaY4(CO3)7 · 9H2O
11.8.12Calcioancylite-(Nd)Nd2.8Ca1.2(CO3)4(OH)3 · H2O
11.8.18Ancylite-(Ce)CeSr(CO3)2(OH) · H2O
11.8.19EwalditeBa(Na,Ca,Y,Ce,K)(CO3)2 · 2.6H2O
11.8.20Mckelveyite-(Y)NaBa3(Ca,U)Y(CO3)6 · 3H2O

Other Names for Donnayite-(Y)

Name in Other Languages:
Simplified Chinese:碳钇锶石
Traditional Chinese:碳釔鍶石

Other Information

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 Donnayite-(Y)

Reference List:
CHAO, G.Y., MAINWARING, P.R., and BAKER, J. (1978) Donnayite, NaCaSr3Y(CO3)6•3H2O, a new mineral from Mont St Hilaire, Québec. Canadian Mineralogist, 16, 335 340.

TRINH, T.L.T., POBEDIMSKAYA, E.A., NADEZHINA, T.N., and KHOMYAKOV, A.P. (1984) The crystal structures of alkaline carbonates; barentsite, bonshtedtite and donnayite. Acta Crystallographica, A40 (Supplement), C257 (abstract).

Internet Links for Donnayite-(Y) URL:
Please feel free to link to this page.
The following Donnayite-(Y) specimens are currently listed for sale on

Localities for Donnayite-(Y)

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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.
  • South Australia
    • Olary Province
      • Yunta
[C. Kovac, pers com]
  • Lower Austria
    • Industrieviertel
      • Gloggnitz
Kolitsch, U. & Slama, M. (2016): Zur Mineralogie des niederösterreichischen Anteils des Semmering-Basistunnels: ein erster Bericht. Der Steirische Mineralog 31, 20-27 (in German).
  • Cochabamba Department
    • Ayopaya Province
A.R. Kampf
Canada (TL)
  • Québec
    • Montérégie
      • La Vallée-du-Richelieu RCM
        • Mont Saint-Hilaire
Chao, G.Y., Mainwaring, P.R., Baker, J. (1978), Donnayite, NaCaSr3Y(CO3)6 73H2O, a new mineral from Mont St-Hilaire, Quebec. Canadian Mineralogist: 16: 335-340.
      • Lajemmerais RCM
        • Varennes & St-Amable
HORVÁTH, L., PFENNINGER HORVÁTH, E., GAULT, R.A., and TARASSOFF, P. (1998) Mineralogy of the Saint Amable sill, Varennes and Saint Amable, Québec, Canada. Mineralogical Record, 29, 83 118.
Horváth, L., Pfenninger-Horváth, E., Gault, R. A., & Tarassoff, P. (1998): Mineralogy of the Saint-Amable Sill, Varennes and Saint-Amable, Québec. Mineralogical Record, 29: 83-118.
  • Kujalleq
    • Narsaq
      • Igaliku (Igaliko)
        • Narsaarsuk Plateau
Petersen et al. (2003): N. Jb. Miner. Mh. 12: 543-555
  • Northern Region
    • Murmanskaja Oblast'
      • Kola Peninsula
        • Khibiny Massif
          • Kukisvumchorr Mt
[World of Stones 95:5-6, p64]; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
Pekov, I. et al (2003): New Data on Minerals: 38: 20-33.
American Mineralogist, Volume 92, pages 1525-1530, 2007
- Khomyakov, A. P. (1995): Mineralogy of hyperagpaitic alkaline rocks. Clarendon Press, Oxford, 223 pp.
      • Northern Karelia; New Data on Minerals (2004): 39: 50-64
  • Urals Region
    • Southern Urals
      • Chelyabinsk Oblast'
New Data on Minerals (2004): 39: 50-64
South Africa
  • North West Province
    • Ngaka Modiri Molema District
VERWOERD, W.J. (1993) Update on carbonatites of South Africa and Namibia. South African Journal of Geology, 96(3), 75-95.
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