Oneillite Mineral Data
General Oneillite Information
Chemical Formula:
Na15Ca3Mn3Fe++3Zr3Nb(Si25O73)(O,OH,H2O)3(OH,Cl)2
Composition:
Molecular Weight = 3,128.56 gm
Sodium 11.02 % Na 14.86 % Na2 O
Calcium 3.84 % Ca 5.38 % CaO
Zirconium 8.75 % Zr 11.82 % ZrO2
Manganese 5.27 % Mn 6.80 % MnO
Niobium 2.97 % Nb 4.25 % Nb2 O5
Iron 5.36 % Fe 6.89 % FeO
Silicon 22.44 % Si 48.01 % SiO2
Hydrogen 0.10 % H 0.89 % H2 O
Chlorine 0.57 % Cl 0.57 % Cl
- %
Cl -0.13 % -O=Cl2
Oxygen 39.68 % O
______ ______
100.00 % 99.34 % = TOTAL OXIDE
Empirical Formula:
Na15 Ca3 Mn2+ 3 Fe2+ 3 Zr3 NbSi25 O74.8 (OH)2.5 (H2 O)0.3 Cl0.5
Environment:
Found in nepheline syenite at the contact between a vein of fine-grained albite and the host rock. A member of the Eudialyte group.
IMA Status:
Approved IMA 1998 (Dana # Added)
Locality:
Poudrette quarry, Mont Saint-Hilaire, Rouville County, Quebec, Canada. Link to MinDat.org Location Data.
Name Origin:
Named after John Johnston O�Neill (1886-1966), geologist with the Geological Survey of Canada, Ottawa, and later, Professor of geology, Dean of Science and Dean of Engineering at Mc Gill University, Montreal, Canada.
Synonym:
IMA1998-064
Oneillite Image
Images:
Oneillite
Comments: Brownish-yellow grains of oneillite in white K-feldspar from the type locality.
Location: Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry), Mont Saint-Hilaire, Rouville, Montérégie, Québec, Canada.
Scale: FOV is 6x5 mm.
© Pavel M. Kartashov
Oneillite Crystallography
Axial Ratios:
a:c = 1:2.11266
Cell Dimensions:
a = 14.192, c = 29.983, Z = 3; V = 5,229.90 Den(Calc)= 2.98
Crystal System:
Trigonal - Pyramidal H-M Symbol (3) Space Group: R 3
X Ray Diffraction:
By Intensity(I/Io ): 2.964(1), 2.844(0.891), 11.348(0.442), 4.291(0.365), 6.021(0.361), 3.15(0.349), 7.1(0.33), 3.199(0.308), 5.683(0.308),
Physical Properties of Oneillite
Cleavage:
None
Color:
Yellowish brown.
Density:
3.2
Diaphaneity:
Transparent
Fracture:
Brittle - Uneven - Very brittle fracture producing uneven fragments.
Habit:
Anhedral Grains - Granular minerals without the expression of crystal shapes
Hardness:
5-6 - Between Apatite and Orthoclase
Luster:
Vitreous (Glassy)
Streak:
white
Optical Properties of Oneillite
Gladstone-Dale:
CI meas = 0.029 (Excellent) - where the CI = (1-KPDmeas /KC ) CI calc = -0.043 (Good) - where the CI = (1-KPDcalc /KC )
KPDcalc = 0.2157,KPDmeas = 0.2009,KC = 0.2069 Ncalc = 1.62 - 1.66
Optical Data:
Uniaxial (-), e=1.6406, w=1.645, bire=0.0044.
Calculated Properties of Oneillite
Electron Density:
Bulk Density (Electron Density)=3.11 gm/cc note: Specific Gravity of Oneillite =3.20 gm/cc.
Fermion Index:
Fermion Index = 0.02 Boson Index = 0.98
Photoelectric:
PEOneillite = 20.39 barns/electronU=PEOneillite x r Electron Density= 63.45 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Oneillite is Not Radioactive
Oneillite Classification
Dana Class:
64.01.01.06 (64) Cyclosilicates
(64.01) Cyclosilicate Rings with Other Anions and Insular Silicate Groups with mixed ring types
(64.01.01) Eudialyte Group
64.01.01.01 Eudialyte Na4(Ca,Ce)2(Fe,Mn,Y)ZrSi8O22(OH,Cl)2(?) R 3 m 3 2/m
64.01.01.02 Alluaivite Na19(Ca,Mn)6(Ti,Nb)3(Si3O9)2(Si10O28)2Cl•2(H2O) R 3 m 3 2/m
64.01.01.03 Kentbrooksite ! (Na,REE)15(Ca,REE)6MnZr3NbSi25O74F2•2(H2O) R 3m 3m
64.01.01.04 Khomyakovite ! Na12Sr3Ca6Fe3Zr3W(Si25O73)(O,OH,H2O)3(OH,Cl)2 R 3m 3m
64.01.01.05 Manganokhomyakovite ! Na12Sr3Ca6Mn3Zr3W(Si25O73)(O,OH,H2O)3(OH,Cl)2 R 3m 3m
64.01.01.06 Oneillite ! Na15Ca3Mn3Fe3Zr3Nb(Si25O73)(O,OH,H2O)3(OH,Cl)2 R 3 3
64.01.01.07 Ferrokentbrooksite ! Na15Ca6(Fe,Mn)3Zr3NbSi25O73(O,OH,H2O)3(Cl,F,OH)2 R 3m 3m
64.01.01.08 Ikranite ! (Na,H3O)15(Ca,Mn,REE)6Fe2Zr3([],Zr)([],Si)Si24O66(O,OH)6Cl•2-3H2O R 3m 3m
64.01.01.09 Feklichevite ! Na11Ca9(Fe,Fe)2Zr3Nb[Si25O73](OH,H2O,Cl,O)5 R 3m 3m
64.01.01.10 Rastsvetaevite ! Na27K8Ca12Fe3Zr6Si52O144(O,OH,H2O)6Cl2 R 3m 3m
64.01.01.11 Taseqite ! Na12Sr3Ca6Fe3Zr3NbSi25O73(O,OH,H2O)3Cl2 R 3m 3m
64.01.01.12 Carbokentbrooksite ! (Na,[])12(Na,Ce)3Ca6Mn3Zr3Nb(Si25O73)(OH)3(CO3)•H2O R 3m 3m
64.01.01.13 Zirsilite-(Ce) ! (Na,[])12(Ce,Na)3Ca6Mn3Zr3Nb(Si25O73)(OH)3(CO3)•H2O R 3m 3m
64.01.01.14 Labyrinthite ! (Na,K,Sr)35Ca12Fe3Zr6TiSi51O144(O,OH,H2O)9Cl3 R 3m 3m
64.01.01.15 Aqualite ! (H3O)8(Na,K,Sr)5Ca6Zr3Si26O66(OH)9Cl R 3m 3m
64.01.01.16 Raslakite ! Na15Ca3Fe3(Na,Zr)3Zr3(Si,Nb)(Si25O73)(OH,H2O)3(Cl,OH) R 3m 3m
64.01.01.17 Georgbarsanovite ! Na12(Mn,Sr,REE)3Ca6Fe3Zr3NbSi25O76Cl2•H2O R 3m 3m
64.01.01.18 Johnsenite-(Ce) ! Na12(Ce,REE,Sr)3Ca6Mn3Zr3W(Si25O73)(CO3)(OH,Cl)2 R 3m 3m
64.01.01.19 Golyshevite ! (Na,Ca)10Ca9(Fe,Fe)2Zr3NbSi25O72(CO3)(OH)3•H2O R 3m 3m
64.01.01.20 Mogovidite ! Na9(Ca,Na)6Ca6Fe2Zr3[]Si25O72(CO3)(OH)4 R 3m 3m
64.01.01.21 Dualite ! Na30(Ca,Na,Ce,Sr)12(Na,Mn,Fe,Ti)6Zr3Ti3MnSi51O144(OH,H2O,Cl)9 R 3m 3m
64.01.01.22 Voronkovite ! Na15(Na,Ca,Ce)3(Mn,Ca)3Fe3Zr3Si26O72(OH,O)4Cl•H2O R 3 3
Strunz Class:
09.CO.10 09 - SILICATES (Germanates)
09.C - Cyclosilicates
09.CO -[Si9O27]18- 9-membered rings
09.CO.10 Alluaivite Na19(Ca,Mn)6(Ti,Nb)3(Si3O9)2(Si10O28)2Cl•2(H2O) R 3 m 3 2/m
09.CO.10 Eudialyte Na4(Ca,Ce)2(Fe,Mn,Y)ZrSi8O22(OH,Cl)2(?) R 3 m 3 2/m
09.CO.10 Kentbrooksite ! (Na,REE)15(Ca,REE)6MnZr3NbSi25O74F2•2(H2O) R 3m 3m
09.CO.10 Labyrinthite ! (Na,K,Sr)35Ca12Fe3Zr6TiSi51O144(O,OH,H2O)9Cl3 R 3m 3m
09.CO.10 Carbokentbrooksite ! (Na,[])12(Na,Ce)3Ca6Mn3Zr3Nb(Si25O73)(OH)3(CO3)•H2O R 3m 3m
09.CO.10 Zirsilite-(Ce) ! (Na,[])12(Ce,Na)3Ca6Mn3Zr3Nb(Si25O73)(OH)3(CO3)•H2O R 3m 3m
09.CO.10 Mogovidite ! Na9(Ca,Na)6Ca6Fe2Zr3[]Si25O72(CO3)(OH)4 R 3m 3m
09.CO.10 Voronkovite ! Na15(Na,Ca,Ce)3(Mn,Ca)3Fe3Zr3Si26O72(OH,O)4Cl•H2O R 3 3
09.CO.10 Taseqite ! Na12Sr3Ca6Fe3Zr3NbSi25O73(O,OH,H2O)3Cl2 R 3m 3m
09.CO.10 Aqualite ! (H3O)8(Na,K,Sr)5Ca6Zr3Si26O66(OH)9Cl R 3m 3m
09.CO.10 Raslakite ! Na15Ca3Fe3(Na,Zr)3Zr3(Si,Nb)(Si25O73)(OH,H2O)3(Cl,OH) R 3m 3m
09.CO.10 Feklichevite ! Na11Ca9(Fe,Fe)2Zr3Nb[Si25O73](OH,H2O,Cl,O)5 R 3m 3m
09.CO.10 Ikranite ! (Na,H3O)15(Ca,Mn,REE)6Fe2Zr3([],Zr)([],Si)Si24O66(O,OH)6Cl•2-3H2O R 3m 3m
09.CO.10 Khomyakovite ! Na12Sr3Ca6Fe3Zr3W(Si25O73)(O,OH,H2O)3(OH,Cl)2 R 3m 3m
09.CO.10 Manganokhomyakovite ! Na12Sr3Ca6Mn3Zr3W(Si25O73)(O,OH,H2O)3(OH,Cl)2 R 3m 3m
09.CO.10 Oneillite ! Na15Ca3Mn3Fe3Zr3Nb(Si25O73)(O,OH,H2O)3(OH,Cl)2 R 3 3
09.CO.10 Ferrokentbrooksite ! Na15Ca6(Fe,Mn)3Zr3NbSi25O73(O,OH,H2O)3(Cl,F,OH)2 R 3m 3m
09.CO.10 Rastsvetaevite ! Na27K8Ca12Fe3Zr6Si52O144(O,OH,H2O)6Cl2 R 3m 3m
09.CO.10 Johnsenite-(Ce) ! Na12(Ce,REE,Sr)3Ca6Mn3Zr3W(Si25O73)(CO3)(OH,Cl)2 R 3m 3m
09.CO.10 Georgbarsanovite ! Na12(Mn,Sr,REE)3Ca6Fe3Zr3NbSi25O76Cl2•H2O R 3m 3m
09.CO.10 Golyshevite ! (Na,Ca)10Ca9(Fe,Fe)2Zr3NbSi25O72(CO3)(OH)3•H2O R 3m 3m
09.CO.10 Dualite ! Na30(Ca,Na,Ce,Sr)12(Na,Mn,Fe,Ti)6Zr3Ti3MnSi51O144(OH,H2O,Cl)9 R 3m 3m
Other Oneillite Information
References:
NAME( CanMin, 8/99) PHYS. PROP.(CanMin, 10/99) OPTIC PROP.(CanMin, 10/99)
See Also:
Links to other databases for Oneillite :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Athena
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info
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Oneillite
Na15Ca3Mn3Fe++3Zr3Nb(Si25O73)(O,OH,H2O)3(OH,Cl)2
Dana No: 64.01.01.06 Strunz No: 09.CO.10
Locality:
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