General Donnayite-(Y) Information![]() Sr3NaCaY(CO3)6•3(H2O) |
![]() Molecular Weight = 828.93 gm |
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Sodium 2.77 % Na 3.74 % Na2O |
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Strontium 31.71 % Sr 37.50 % SrO |
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Calcium 4.83 % Ca 6.76 % CaO |
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Yttrium 10.73 % Y 13.62 % Y2O3 |
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Hydrogen 0.73 % H 6.52 % H2O |
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Carbon 8.69 % C 31.86 % CO2 |
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Oxygen 40.53 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
![]() Sr3NaCaY(CO3)6•3(H2O) |
![]() Nepheline syenites. |
![]() Approved IMA 1978 |
![]() Mt. St. Hilare, Quebec, Canada. Link to MinDat.org Location Data. |
![]() Named for Joseph Desire Hubert Donnay (1902-1994), Belgian-American-Canadian crystallographer and minereralogist and Gabrielle (Hamburger) Donnay (1920-1987), American Canadian mine ralogist, McGill Univeristy. |
![]() Donnayite-(Y) + Pronunciation |
![]() ![]() IMA1978-007 |
| | Donnayite-(Y) Image
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Donnayite-(Y) Crystallography![]() a:b:c =1.0001:1:0.7548 |
![]() a = 9, b = 8.999, c = 6.793, Z = 1; alpha = 102.77°, beta = 116.28°, gamma = 59.99° V = 416.61 Den(Calc)= 3.30 |
![]() Triclinic - PedialH-M Symbol (1) Space Group: P1 |
![]() By Intensity(I/Io): 2.839(1), 4.368(0.7), 6.103(0.4), |
| Physical Properties of Donnayite-(Y)![]() {???} Indistinct, {001} Distinct |
![]() Brown, Brownish yellow, Colorless, Gray, Gray white. |
![]() 3.3 |
![]() Transparent to Translucent |
![]() 3 - Calcite |
![]() Vitreous (Glassy) |
![]() white |
| Optical Properties of Donnayite-(Y)![]() CI meas= 0.005 (Superior) - where the CI = (1-KPDmeas/KC) |
CI calc= -0.02 (Excellent) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1919,KPDmeas= 0.1873,KC= 0.1882 Ncalc = 1.61 - 1.62 ![]() Biaxial (-), a=1.551-1.561, b=1.646, g=1.652, bire=0.0910-0.1010, 2V(Calc)=26-28, 2V(Meas)=0-20. |
| Calculated Properties of Donnayite-(Y)![]() Bulk Density (Electron Density)=3.14 gm/cc |
note: Specific Gravity of Donnayite-(Y) =3.30 gm/cc. ![]() Fermion Index = 0.02 |
Boson Index = 0.98 ![]() PEDonnayite-(Y) = 49.28 barns/electron |
U=PEDonnayite-(Y) x rElectron Density= 154.60 barns/cc. ![]() GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Donnayite-(Y) is Not Radioactive | Donnayite-(Y) Classification![]() 15.03.04.01 (15)Hydrated Carbonates |
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(15.03)where A+m B++n (XO3)p · x(H2O), (m+n):p = 1:1 and containing U, Th, Zr, Y |
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(15.03.04)Mckelveyite Group |
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![]() 05.CC.05 05 - CARBONATES (NITRATES) |
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05.C - Carbonates without Additional Anions, with H2O |
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05.CC -With rare-earth elements (REE) |
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| Other Donnayite-(Y) Information![]() NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) |
![]() Links to other databases for Donnayite-(Y) : |
1 - Alkali-Nuts(English) 2 - Alkali-Nuts(Francais) 3 - Am. Min. Crystal Structure Database 4 - Athena 5 - EUROmin Project 6 - GeoScienceWorld 7 - Google Images 8 - Google Scholar 9 - MinDAT 10 - Mineralienatlas (Deutsch) 11 - Online Mineral Museum 12 - QUT Mineral Atlas 13 - Ruff.Info Search for Donnayite-(Y) using: Visit our Advertisers for Donnayite-(Y) : A Bijoux Google Search for Donnayite-(Y)Adam's Minerals Google Search for Donnayite-(Y) Cape Minerals Google Search for Donnayite-(Y) Dakota Matrix Minerals Google Search for Donnayite-(Y) Excalibur Mineral Corp. Google Search for Donnayite-(Y) Exceptional Minerals Google Search for Donnayite-(Y) John Betts Fine Minerals Search for Donnayite-(Y) McDougall Minerals Google Search for Donnayite-(Y) Mineral News Website Link Rock and Mineral Shows Google Search for Donnayite-(Y) Weinrich Minerals, Inc. Google Search for Donnayite-(Y) Ask about Donnayite-(Y) here : Print or Cut-and-Paste your Donnayite-(Y) Specimen Label here :
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