Alicewilsonite-(YCe)
A valid IMA mineral species
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About Alicewilsonite-(YCe)
Alice E. Wilson
Formula:
Na2Sr2YCe(CO3)6 · 3H2O
Colour:
pale yellow to yellow, lemon yellow, green yellow, orange-yellow, pale green to green, pale grey to grey, green grey, beige, and colourless
Lustre:
Vitreous
Hardness:
3
Specific Gravity:
3.37 (Calculated)
Crystal System:
Triclinic
Member of:
Name:
Named in honor of Alice Evelyn Wilson (26 August 1881, Cobourg, Ontario, Canada - 15 April 1964, Ottawa, Ontario, Canada), geologist and paleontologist with the Geological Survey of Canada. She was Canada’s first female geologist and the recognized authority on the fossils and rock of the Ottawa-St. Lawrence Valley. She became the first female Fellow of the Royal Society of Canada in 1938. The suffix indicates the dominant essential rare-earth elements, according to IMA nomenclature.
The Ce analogue of alicewilsonite-(YLa). Unique combination of elements (at the upload time). A rare example of separation of REEs (rare earth elements) into separate structural positions (compare the chemically similar bainbridgeite-(YCe); and bainbridgeite-(NdCe)).
Many specimens of "donnayite-(Y)" from Poudrette Quarry, Quebec are actually alicewilsonite-(YCe).
Many specimens of "donnayite-(Y)" from Poudrette Quarry, Quebec are actually alicewilsonite-(YCe).
Unique Identifiers
Mindat ID:
55237
Long-form identifier:
mindat:1:1:55237:8
Similar Names
| Alicewilsonite-(YLa) | A valid IMA mineral species | Na2Sr2YLa(CO3)6 · 3H2O |
IMA Classification of Alicewilsonite-(YCe)
Approved
IMA Formula:
Na2Sr2YCe3+(CO3)6·3H2O
Approval year:
2020
Approval history:
Recognized as an unnamed mineral by IMA, as UM1990-13-CO:HNaREESrY
Classification of Alicewilsonite-(YCe)
5.CC.
5 : CARBONATES (NITRATES)
C : Carbonates without additional anions, with H2O
C : With rare earth elements (REE)
5 : CARBONATES (NITRATES)
C : Carbonates without additional anions, with H2O
C : With rare earth elements (REE)
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Aws-YCe | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Alicewilsonite-(YCe)
Vitreous
Transparency:
Transparent
Colour:
Pale yellow to yellow, lemon yellow, green yellow, orange-yellow, pale green to green, pale grey to grey, green grey, beige, and colourless
Streak:
White
Hardness:
3 on Mohs scale
Cleavage:
Imperfect/Fair
fair to indistinct, parallel to {001}.
fair to indistinct, parallel to {001}.
Fracture:
Irregular/Uneven
Density:
3.37 g/cm3 (Calculated)
Optical Data of Alicewilsonite-(YCe)
Type:
Biaxial (+)
RI values:
nα = 1.554(3) nβ = 1.558(3) nγ = 1.644(2)
2V:
Measured: 20° (3), Calculated: 26°
Max. Birefringence:
δ = 0.090
Based on recorded range of RI values above.
Based on recorded range of RI values above.
Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
Surface Relief:
Moderate (positive)
Relative to Canada balsam mounting medium (n ≈ 1.537).
Relative to Canada balsam mounting medium (n ≈ 1.537).
This shows the grain boundary and Becke line effect under plane-polarised
light, based on the contrast between this mineral's average refractive
index and the mounting medium. It does not take into account mineral
colouration.
In focus
Interference Figure:
This shows the idealized biaxial acute bisectrix (Bxa) interference figure
- the conoscopic view for a grain cut perpendicular to the acute bisectrix, using
this mineral's 2V. The two small white dots mark the melatopes - the points
where the two optic axes emerge - and are shown only when they fall within the
field of view. The coloured bands are isochromatics, and the dark bands are
isogyres.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
Chemistry of Alicewilsonite-(YCe)
Mindat Formula:
Na2Sr2YCe(CO3)6 · 3H2O
Element Weights:
Crystallography of Alicewilsonite-(YCe)
Crystal System:
Triclinic
Class (H-M):
1 - Pedial
Space Group:
P1
Cell Parameters:
a = 8.9950(4) Å, b = 9.0096(3) Å, c = 6.7676(4) Å
α = 102.745(4)°, β = 116.324(5)°, γ = 60.011(5)°
α = 102.745(4)°, β = 116.324(5)°, γ = 60.011(5)°
Ratio:
a:b:c = 0.998 : 1 : 0.751
Unit Cell V:
425.77 ų (Calculated from Unit Cell)
Z:
1
Morphology:
The crystals usually reach up to 2–3 mm in size, but some larger crystals up to 2–3 cm have been also found. The crystals often form stacked or parallel growth aggregates and rosettes.
Epitaxial Relationships of Alicewilsonite-(YCe)
Epitaxial Minerals:
| 'Bainbridgeite-(YCe)' | Na2Ba2YCe(CO3)6 · 3H2O |
| 'Donnayite-(Y)' | NaCaSr3Y(CO3)6 · 3H2O |
| 'Weloganite' | Na2Sr3Zr(CO3)6 · 3H2O |
Epitaxy Comments:
alicewilsonite-(YCe) on donnayite-(Y) and vice versa. Similar relationships were observed between alicewilsonite-(YCe) and the recently approved new species bainbridgeite-(YCe), Na2Ba2YCe(CO3)6 ⋅ 3H2O. On one specimen, alicewilsonite-(YCe) was found forming an epitactic overgrowth on weloganite, Na2Sr3Zr(CO3)6 ⋅ 3H2O. Homoepitactic growth is also common.
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 6.07 Å | (31) |
| 4.372 Å | (100) |
| 4.037 Å | (25) |
| 3.201 Å | (25) |
| 2.831 Å | (67) |
| 2.601 Å | (39) |
| 2.236 Å | (24) |
| 1.974 Å | (24) |
Type Occurrence of Alicewilsonite-(YCe)
General Appearance of Type Material:
hemimorphic pseudotrigonal and pseudohexagonal and show a wide range of habits, including barrel-shaped, saucer-shaped, spindle-shaped, cone-shaped, columnar, tabular, and platy. In most cases the crystal faces are curved, split, and/or stepped.
Place of Conservation of Type Material:
Type material is deposited in the mineralogical collections of the Canadian Museum of Nature, 240 McLeod Street, Ottawa, Ontario, Canada, catalogue number CMNMC 53660
Geological Setting of Type Material:
miarolitic cavities in nepheline and sodalite syenite, alkaline pegmatites, carbonate pegmatites, and marble xenoliths
Associated Minerals at Type Locality:
Synonyms of Alicewilsonite-(YCe)
Other Language Names for Alicewilsonite-(YCe)
Dutch:Alicewilsoniet-(YCe)
French:Alicewilsonite-(YCe)
German:Alicewilsonit-(YCe)
Norwegian:Alicewilsonitt-(YCe)
Relationship of Alicewilsonite-(YCe) to other Species
Member of:
Other Members of Mckelveyite Group:
| Alicewilsonite-(YLa) | Na2Sr2YLa(CO3)6 · 3H2O | Tric. 1 : P1 |
| Bainbridgeite-(NdCe) | Na2Ba2NdCe(CO3)6 · 3H2O | Tric. 1 : P1 |
| Bainbridgeite-(YCe) | Na2Ba2YCe(CO3)6 · 3H2O | Tric. 1 : P1 |
| Donnayite-(Y) | NaCaSr3Y(CO3)6 · 3H2O | Tric. 1 : P1 |
| Ewaldite | Ba(Na,Ca,Y,Ce,K)(CO3)2 · 2.6H2O | Hex. 6mm : P63mc |
| Mckelveyite-(Nd) | NaCaBa3Nd(CO3)6 · 3H2O | Mon. m : Bb |
| Mckelveyite-(Y) | NaCaBa3Y(CO3)6 · 3H2O | Tric. 1 : P1 |
| Weloganite | Na2Sr3Zr(CO3)6 · 3H2O | Tric. 1 : P1 |
Common Associates
Associations Based on Photo Data:
| 11 photos of Alicewilsonite-(YCe) associated with Donnayite-(Y) | NaCaSr3Y(CO3)6 · 3H2O |
| 10 photos of Alicewilsonite-(YCe) associated with Albite | Na(AlSi3O8) |
| 9 photos of Alicewilsonite-(YCe) associated with Parisite-(Ce) | CaCe2(CO3)3F2 |
| 9 photos of Alicewilsonite-(YCe) associated with Calcite | CaCO3 |
| 8 photos of Alicewilsonite-(YCe) associated with Pyrite | FeS2 |
| 7 photos of Alicewilsonite-(YCe) associated with Gaidonnayite | Na2Zr(Si3O9) · 2H2O |
| 5 photos of Alicewilsonite-(YCe) associated with Ferroceladonite | K(Fe2+Fe3+◻)(Si4O10)(OH)2 |
| 3 photos of Alicewilsonite-(YCe) associated with Bainbridgeite-(YCe) | Na2Ba2YCe(CO3)6 · 3H2O |
| 1 photo of Alicewilsonite-(YCe) associated with Analcime | Na(AlSi2O6) · H2O |
| 1 photo of Alicewilsonite-(YCe) associated with Sabinaite | Na4Zr2TiO4(CO3)4 |
Related Minerals - Strunz-mindat Grouping
| 5.CC. | Bainbridgeite-(NdCe) | Na2Ba2NdCe(CO3)6 · 3H2O |
| 5.CC. | Yuchuanite-(Y) | Y2(CO3)3 · H2O |
| 5.CC.05 | Donnayite-(Y) | NaCaSr3Y(CO3)6 · 3H2O |
| 5.CC.05 | Alicewilsonite-(YLa) | Na2Sr2YLa(CO3)6 · 3H2O |
| 5.CC.05 | Mckelveyite-(Nd) | NaCaBa3Nd(CO3)6 · 3H2O |
| 5.CC.05 | Mckelveyite-(Y) | NaCaBa3Y(CO3)6 · 3H2O |
| 5.CC.05 | Ewaldite | Ba(Na,Ca,Y,Ce,K)(CO3)2 · 2.6H2O |
| 5.CC.05 | 'UM1992-05-CO:CaCeLaNaSr' | (Sr,Na,Y,REE,Ca,Ba)2(CO3)2 · H2O |
| 5.CC.05 | Weloganite | Na2Sr3Zr(CO3)6 · 3H2O |
| 5.CC.05 | Mckelveyite Group | A3B3(CO3)6 · 3H2O |
| 5.CC.05 | Bainbridgeite-(YCe) | Na2Ba2YCe(CO3)6 · 3H2O |
| 5.CC.05 | 'Unnamed (MSH UK-37A)' | Sr3NaCaY(CO3)6 · 3H2O |
| 5.CC.10 | Tengerite-(Y) | Y2(CO3)3 · 2-3H2O |
| 5.CC.15 | Lokkaite-(Y) | Ca(Y,Gd,Nd,Dy)4(CO3)7 · 9H2O |
| 5.CC.15 | Kimuraite-(Y) | Ca(Y,Nd)2(CO3)4 · 6H2O |
| 5.CC.15 | Hizenite-(Y) | Ca2Y6(CO3)11 · 14H2O |
| 5.CC.20 | Shomiokite-(Y) | Na3Y[CO3]3 · 3H2O |
| 5.CC.25 | Lanthanite-(Ce) | Ce2(CO3)3 · 8H2O |
| 5.CC.25 | Lanthanite-(La) | La2(CO3)3 · 8H2O |
| 5.CC.25 | Lanthanite-(Nd) | Nd2(CO3)3 · 8H2O |
| 5.CC.25 | Calkinsite-(Ce) | (Ce,La)2(CO3)3 · 4H2O |
| 5.CC.30 | Adamsite-(Y) | NaY[CO3]2 · 6H2O |
| 5.CC.35 | Decrespignyite-(Y) | Cu(Y,REE)4(CO3)4(OH)5Cl · 2H2O |
| 5.CC.40 | Galgenbergite-(Ce) | Ca(Ce,La,Nd)2(CO3)4 · H2O |
| 5.CC.45 | Lecoqite-(Y) | Na3Y(CO3)3 · 6H2O |
Fluorescence of Alicewilsonite-(YCe)
none
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.
Internet Links for Alicewilsonite-(YCe)
mindat.org URL:
https://www.mindat.org/min-55237.html
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Please feel free to link to this page.
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References for Alicewilsonite-(YCe)
Localities for Alicewilsonite-(YCe)
Showing 3 localities.
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The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and 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).
All localities listed without proper references should be considered as questionable.
Canada (TL) | |
| Lykova et al. (2023) +1 other reference |
| Lykova et al. (2023) |
Russia | |
| Lykova et al. (2023) |
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Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada