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Gabrielle Donnay
Na2Zr(Si3O9) · 2H2O
Colourless, may be pale yellow, pale brown to brown, pale grey, gray green.
Specific Gravity:
Crystal System:
Named in honor of Gabrielle/Gaibrielle "Gai" Donnay (née Hamburger) (1920, Landeshut, Silesi, Germany (now Poland) - 4 April 1987, Mont St. Hilaire, Quebec, Canada), chemist, mineralogist and crystallographer. She worked for twenty years at the Geophysical Laboratory, Carnegie Institution of Washington and later at McGill University, Montreal, Canada. For her Ph.D. thesis she solved the complex structure of tourmaline, and later solved numerous other structures. The mineral donnayite-(Y) is also named for her, as well as her husband.
Dimorph of:
The orthorhombic dimorph of Catapleiite.

Compare UM1991-24-SiO:CaKNaZr.

Hide all sections | Show all sections

Classification of GaidonnayiteHide

Approval Year:

9 : SILICATES (Germanates)
D : Inosilicates
M : Inosilicates with 6-periodic single chains

59 : CYCLOSILICATES Three-Membered Rings
2 : Three-Membered Rings, hydrated

14 : Silicates not Containing Aluminum
10 : Silicates of Zr or Hf

Physical Properties of GaidonnayiteHide

Colourless, may be pale yellow, pale brown to brown, pale grey, gray green.
None Observed
2.67 g/cm3 (Measured)    2.70 g/cm3 (Calculated)

Optical Data of GaidonnayiteHide

Biaxial (+)
RI values:
nα = 1.570 - 1.575 nβ = 1.590 - 1.593 nγ = 1.596 - 1.605
Measured: 53° to 59°
Max Birefringence:
δ = 0.026 - 0.030
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
r < v strong
Optical Extinction:

Chemical Properties of GaidonnayiteHide

Na2Zr(Si3O9) · 2H2O
IMA Formula:
Na2ZrSi3O9 · 2H2O
Common Impurities:

Crystallography of GaidonnayiteHide

Crystal System:
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Cell Parameters:
a = 11.740 Å, b = 12.820 Å, c = 6.691 Å
a:b:c = 0.916 : 1 : 0.522
Unit Cell V:
1,007.04 ų (Calculated from Unit Cell)
Equant to slightly elongated crystals with wedge-like forms. {010}, {120}, {011}, {100}, {001}. Striated || [001].
[012] common
Non-standard setting P21nb.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
6.45 (40)
5.90 (80)
5.64 (60)
3.12 (100)
2.95 (70)
2.83 (40)
2.50 (40)

Type Occurrence of GaidonnayiteHide

Synonyms of GaidonnayiteHide

Other Language Names for GaidonnayiteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Siderite26 photos of Gaidonnayite associated with Siderite on
Albite21 photos of Gaidonnayite associated with Albite on
Analcime21 photos of Gaidonnayite associated with Analcime on
Microcline18 photos of Gaidonnayite associated with Microcline on
Aegirine16 photos of Gaidonnayite associated with Aegirine on
Natrolite12 photos of Gaidonnayite associated with Natrolite on
Hilairite10 photos of Gaidonnayite associated with Hilairite on
Calcite10 photos of Gaidonnayite associated with Calcite on
Neighborite10 photos of Gaidonnayite associated with Neighborite on
Burbankite8 photos of Gaidonnayite associated with Burbankite on

Related Minerals - Nickel-Strunz GroupingHide

9.DM.05StokesiteCaSn[Si3O9] · 2H2OOrth. mmm (2/m 2/m 2/m) : Pnna
9.DM.10CalciohilairiteCaZr[SiO3]3 · 3H2OTrig.
9.DM.10HilairiteNa2Zr[SiO3]3 · 3H2OTrig.
9.DM.10KomkoviteBaZr[Si3O9] · 3H2OTrig.
9.DM.10Sazykinaite-(Y)Na5YZr[SiO3]6 · 6H2O
9.DM.10Pyatenkoite-(Y)Na5YTi[SiO3]6 · 6H2OTrig.
9.DM.15GeorgechaoiteNaKZr[Si3O9] · 2H2OOrth. mm2
9.DM.20ChkaloviteNa2BeSi2O6Orth. mm2 : Fdd2
9.DM.25VlasoviteNa2ZrSi4O11Mon. 2/m : B2/b
9.DM.30RevditeNa16Si16O27(OH)26 · 28H2OMon. 2 : B2
9.DM.35ScheuchzeriteNa(Mn,Mg,Zn)9[VSi9O28(OH)](OH)3Tric. 1 : P1
9.DM.40TerskiteNa4ZrSi6O16 · 2H2OOrth.

Related Minerals - Dana Grouping (8th Ed.)Hide · 2H2OMon. · 2H2O[Si3O9] · 2H2OOrth. mm2 · 8H2O

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

14.10.1ZirconZr(SiO4)Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
14.10.2HafnonHfSiO4Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
14.10.5VlasoviteNa2ZrSi4O11Mon. 2/m : B2/b
14.10.6Keldyshite(Na,H)2ZrSi2O7Tric. 1 : P1
14.10.8TerskiteNa4ZrSi6O16 · 2H2OOrth.
14.10.9ElpiditeNa2ZrSi6O15 · 3H2OOrth.
14.10.10HilairiteNa2Zr[SiO3]3 · 3H2OTrig.
14.10.11PetarasiteNa5Zr2(Si6O18)(Cl,OH) · 2H2OMon. 2/m : P21/m
14.10.15KostyleviteK2Zr(Si3O9) · H2OMon.
14.10.16UmbiteK2(Zr,Ti)Si3O9 · H2OOrth.
14.10.17ParaumbiteK3Zr2H(Si3O9)2 · nH2OOrth.
14.10.18GeorgechaoiteNaKZr[Si3O9] · 2H2OOrth. mm2
14.10.20CalciocatapleiiteCaZr(Si3O9) · 2H2O
14.10.21CalciohilairiteCaZr[SiO3]3 · 3H2OTrig.
14.10.22ArmstrongiteCaZr[Si6O15] · 3H2OMon.
14.10.23Lemoynite(Na,K)2CaZr2Si10O26 · 5H2OMon. 2/m : B2/b
14.10.24CatapleiiteNa2Zr(Si3O9) · 2H2OMon.
14.10.26LovozeriteNa2Ca(Zr,Ti)(Si6O12)[(OH)4O2] · H2OMon.
14.10.27Låvenite(Na,Ca)2(Mn2+,Fe2+)(Zr,Ti)(Si2O7)(O,OH,F)2Mon. 2/m : P21/b
14.10.28PenkvilksiteNa4Ti2Si8O22 · 4H2OOrth. mmm (2/m 2/m 2/m) : Pbcn
14.10.29DarapiositeK(Na,◻,K)2(Li,Zn,Fe)3(Mn,Zr,Y)2[Si12O30]Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
14.10.31KomkoviteBaZr[Si3O9] · 3H2OTrig.

Fluorescence of GaidonnayiteHide

Bright green SW and LW (Mt. St-Hilaire and Norway)

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 GaidonnayiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Chao, G.Y., Watkinson, D.H. (1974) Gaidonnayite, Na2ZrSi3O9•2H2O a new mineral from Mont St. Hilaire, Quebec. Canadian Mineralogist: 12: 316-319.
Chao, G.Y. (1973) The crystal structure of gaidonnayite, orthorhombic Na2ZrSi3O9•2H2O. Canadian Mineralogist: 12: 143-144. (Abstract)
Chao, G.Y. (1985) The crystal structure of gaidonnayite Na2ZrSi3O9•2H2O. Canadian Mineralogist: 23: 11-15.
Gordon, S.G. (1924) Minerals obtained in Greenland on the second Academy-Vaux expedition, 1923. Proceedings of the Academy of Natural sciences of Philadelphia: 76: 249-268 [α-catapleiite, kalithompsonite] (abstracted in Min. Rec. 5, 115-127.)
Mandarino, J.A., Sturman, B.D. (1978) The identity of α-catapleiite and gaidonnayite. Canadian Mineralogist: 16: 195-198.

Internet Links for GaidonnayiteHide

Localities for GaidonnayiteHide

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.
  • New South Wales
    • Gordon Co.
Spandler, C. & Morris, C. (2016): Geology and genesis of the Toongi rare metal (Zr, Hf, Nb, Ta, Y and REE) deposit, NSW, Australia, and implications for rare metal mineralization in peralkaline igneous rocks. Contributions to Mineralogy and Petrology 171, 104 (24 pages).
  • Minas Gerais
ATENCIO, D., COUTINHO, J.M.C., ULBRICH, M.N.C., VLACH, S.R.F., RASTVETAEVA, R.K. & PUSHCHAROVSKY, D.Yu. (1999) Hainite from Poços de Caldas, Minas Gerais, Brazil. Canadian Mineralogist, 37, 91-98.
      • Poços de Caldas
Horváth, Menezes, Toft ollections - confirmed by XRD & microprobe
  • Québec
    • Abitibi-Témiscamingue
      • Témiscamingue RCM
        • Les Lacs-du-Témiscamingue
Roberts, A.C. & Bonardi, M. (1983): Potassian gaidonnayite from the Kipawa agpaitic syenite complex, Quebec. Geol. Surv. Can., Pap. 83-1A, 480-482.
    • Montérégie
      • La Vallée-du-Richelieu RCM
        • Mont Saint-Hilaire
Chao G.Y. (1973), The crystal structure of gaidonnayite, orthorhombic Na2ZrSi3O9 7 2H2O. Canadian Mineralogist: 12: 143-44; Chao, G.Y., Watkinson, D.H. (1974), Gaidonnayite, Na2ZrSi3O9 7 2H2O, a new mineral from Mont St.-Hilaire, Quebec. Canadian Mineralogist: 12: 316-319; Chao, G.Y. (1985), The crystal structure of gaidonnayite 2ZrSi3O9 7 2H2O. Canadian Mineralogist: 23: 11-15.
      • 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.
    • Montréal
      • Montréal-Est
Canadian Museum of Nature collection
  • Kujalleq
    • Narsaq
      • Igaliku (Igaliko)
        • Narsaarsuk Plateau
Gordon, S.G. (1924): Minerals obtained in Greenland on the second Academy-Vaux expedition, 1923. Proceedings of the Academy of Natural Sciences of Philadelphia. 76, 249-268.;Mandarion, J.A. & Sturman, B.D. (1978): The identity of α-catapleiite and gaidonnayite. Canadian Mineralogist. 16, 195-198.
  • Telemark
    • Porsgrunn
      • Langesundsfjorden
        • Siktesøya
Larsen, A.O. & Raade, G. (1991): Gaidonnayite from the nepheline syenite pegmatite on Siktesøya in the southern part of the Oslo Region, norway. Norsk Geologisk Tidsskrift. 71: 303-306
  • Vestfold
    • Larvik
      • Malerød
Larsen, A. O. (ed.) (2010): The Langesundsfjord. History, geology, pegmatites, minerals. Bode Verlag Gmbh, Salzhemmendorf, Germany, 240 p; Andresen, P. (2011): Mineralene fra Midtfjellet larvikittbrudd, Malerød, Larvik. Norsk Bergverksmuseum Skrift. 46: 41-47
Larsen, A. O. (ed.) (2010): The Langesundsfjord. History, geology, pegmatites, minerals. Bode Verlag Gmbh, Salzhemmendorf, Germany, 240 p
      • Tvedalen
Collection of Peter Andresen.;Larsen, A. O. (ed.) (2010): The Langesundsfjord. History, geology, pegmatites, minerals. Bode Verlag Gmbh, Salzhemmendorf, Germany, 240 p
MAC depository of Unpublished Data, document Larvik Plutonic complex, CM51_735 (Piilonen et al 2013)
        • Tuften (Tuften 1 Quarry; Tuften 2 Quarry)
Collected by Roy Kristiansen August 2009.; Andresen, P. (2013): Gedigent bly og andre spennende mineraler fra en unik pegmatitt i Tvedalen. Norsk Bergverksmuseum Skrifter. 50, 83-87
  • Faro District
    • Monchique
      • Monchique
- P. ALVES, C. LEAL GOMES (2010). Mineralização Sr-Ba tardia em cavidades de rochas filonianas subsaturadas do Maciço Alcalino de Monchique. CNG 2010 (Braga, Portugal)
  • Northern Region
    • Murmanskaya Oblast'
      • Khibiny Massif
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
Arzamastsev, A., Yakovenchuk, V., Pakhomovsky, Y., & Ivanyuk, G. (2008). The Khibina and Lovozero alkaline massifs: Geology and unique mineralization. In Guidbook for 33rd International Geological Congress Excursion (No. 47, p. 58).
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
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow; Cámara, F., Sokolova, E., Abdu, Y. A., & Hawthorne, F. C. (2014). Saamite, Ba□ Tinbna3ti (Si2o7) 2o2 (Oh) 2 (H2o) 2, a Group-iii Ti-disilicate Mineral from the Khibiny Alkaline Massif, Kola Peninsula, Russia: Description and Crystal Structure. The Canadian Mineralogist, 52(4), 745-762.
Pekov, I. et al (2003): New Data on Minerals: 38: 20-33.
Pekov, I. et al (2003): New Data on Minerals: 38: 20-33.
  • Arkansas
    • Hot Spring Co.
      • Magnet Cove
Henry Barwood - unpublished (2010)
    • Pulaski Co.
      • Little Rock
Rocks and Minerals, (1988) 63:104-125; Rocks and Minerals, (1989) 64:314-322
Min News (2000) 16:6 pp 1-5,9
  • New Mexico
    • Otero Co.
      • Cornudas Mts
W. Stoll - L. Horváth pers. comm. 2004; Horváth specimen coll. 2012 Feb. XRD & EDS
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