Bainbridgeite-(YCe)
A valid IMA mineral species
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About Bainbridgeite-(YCe)
Formula:
Na2Ba2YCe(CO3)6 · 3H2O
Colour:
pale yellow to yellow, orange-yellow, orange, grey to almost black, bluish grey, green-grey, green, or even white
Lustre:
Vitreous
Hardness:
3
Specific Gravity:
3.49 (Calculated)
Crystal System:
Triclinic
Member of:
Name:
Named in honour of Michael Bainbridge (born 1974), mineral photographer and collector, Canadian Museum of Nature collections staff from Ontario, Canada.
The Y analogue of bainbridgeite-(NdCe). The two, alongside with alicewilsonite-(YCe) and alicewilsonite-(YLa) are unique (status: 2023) in terms of site-structural separation of the rare earth element (REE) atoms.
Chemically similar to alicewilsonite-(YCe).
Chemically similar to alicewilsonite-(YCe).
Unique Identifiers
Mindat ID:
55253
Long-form identifier:
mindat:1:1:55253:6
Similar Names
| Bainbridgeite-(NdCe) | A valid IMA mineral species | Na2Ba2NdCe(CO3)6 · 3H2O |
IMA Classification of Bainbridgeite-(YCe)
Approved
IMA Formula:
Na2Ba2YCe3+(CO3)6·3H2O
Approval year:
2020
Type description reference:
Classification of Bainbridgeite-(YCe)
5.CC.05
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 |
|---|---|---|
| Bbg | 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 Bainbridgeite-(YCe)
Vitreous
Colour:
Pale yellow to yellow, orange-yellow, orange, grey to almost black, bluish grey, green-grey, green, or even white
Comment:
Grey and black colours are most common
Streak:
White
Hardness:
3 on Mohs scale
Cleavage:
None Observed
Fracture:
Irregular/Uneven
Density:
3.49 g/cm3 (Calculated)
Optical Data of Bainbridgeite-(YCe)
Type:
Biaxial (+)
RI values:
nα = 1.572(2) nβ = 1.586(2) nγ = 1.628(2)
2V:
Measured: 48° (4), Calculated: 62°
Max. Birefringence:
δ = 0.056
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 Bainbridgeite-(YCe)
Mindat Formula:
Na2Ba2YCe(CO3)6 · 3H2O
Element Weights:
Crystallography of Bainbridgeite-(YCe)
Crystal System:
Triclinic
Class (H-M):
1 - Pedial
Space Group:
P1
Cell Parameters:
a = 9.0874(4) Å, b = 9.0877(4) Å, c = 6.8826(3) Å
α = 102.912(4)°, β = 116.208(4)°, γ = 60.322(4)°
α = 102.912(4)°, β = 116.208(4)°, γ = 60.322(4)°
Ratio:
a:b:c = 1 : 1 : 0.757
Unit Cell V:
443.05 ų (Calculated from Unit Cell)
Z:
1
Epitaxial Relationships of Bainbridgeite-(YCe)
Epitaxial Minerals:
| 'Alicewilsonite-(YCe)' | Na2Sr2YCe(CO3)6 · 3H2O |
| 'Mckelveyite-(Y)' | NaCaBa3Y(CO3)6 · 3H2O |
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 6.22 Å | (4) |
| 4.43 Å | (100) |
| 4.09 Å | (37) |
| 3.263 Å | (26) |
| 2.888 Å | (67) |
| 2.633 Å | (38) |
| 2.263 Å | (23) |
| 2.010 Å | (20) |
Reference:
Comments:
From Type Description.
Type Occurrence of Bainbridgeite-(YCe)
General Appearance of Type Material:
crystals are hemimorphic pseudotrigonal and pseudohexagonal and show a wide range of habits, including platy, columnar, tabular, cone-shaped, barrel-shaped, saucer-shaped, and spindle-shaped (Fig. 1). The crystal faces are often curved, split, and/or stepped. They commonly form stacked or parallel growth aggregates, rosettes, and groups of radiating crystals. The crystals are usually less than 1 mm in size with some reaching 1.5–2 mm. Aggregates can reach 3 mm in size.
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 46324
Geological Setting of Type Material:
late-stage mineral found in hydrothermally altered alkaline pegmatites, miarolitic cavities in nepheline and sodalite syenite, and marble xenoliths at the Poudrette (Demix) quarry
Associated Minerals at Type Locality:
Synonyms of Bainbridgeite-(YCe)
Other Language Names for Bainbridgeite-(YCe)
Dutch:Bainbridgeiet-(YCe)
German:Bainbridgeit-(YCe)
Relationship of Bainbridgeite-(YCe) to other Species
Member of:
Other Members of Mckelveyite Group:
| Alicewilsonite-(YCe) | Na2Sr2YCe(CO3)6 · 3H2O | Tric. 1 : P1 |
| Alicewilsonite-(YLa) | Na2Sr2YLa(CO3)6 · 3H2O | Tric. 1 : P1 |
| Bainbridgeite-(NdCe) | Na2Ba2NdCe(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:
| 3 photos of Bainbridgeite-(YCe) associated with Alicewilsonite-(YCe) | Na2Sr2YCe(CO3)6 · 3H2O |
| 1 photo of Bainbridgeite-(YCe) associated with Thorbastnäsite | ThCa(CO3)2F2 · 3H2O |
| 1 photo of Bainbridgeite-(YCe) associated with Analcime | Na(AlSi2O6) · H2O |
| 1 photo of Bainbridgeite-(YCe) associated with Sabinaite | Na4Zr2TiO4(CO3)4 |
| 1 photo of Bainbridgeite-(YCe) associated with Stilpnomelane | K4Fe2+48[Si64Al8]O164(OH)52 · nH2O |
Related Minerals - Strunz-mindat Grouping
| 5.CC. | Bainbridgeite-(NdCe) | Na2Ba2NdCe(CO3)6 · 3H2O |
| 5.CC. | Yuchuanite-(Y) | Y2(CO3)3 · H2O |
| 5.CC. | Alicewilsonite-(YCe) | Na2Sr2YCe(CO3)6 · 3H2O |
| 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 | '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 Bainbridgeite-(YCe)
The mineral is non-fluorescent under ultraviolet light.
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 Bainbridgeite-(YCe)
mindat.org URL:
https://www.mindat.org/min-55253.html
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Please feel free to link to this page.
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References for Bainbridgeite-(YCe)
Localities for Bainbridgeite-(YCe)
Showing 1 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) | |
| Miyawaki et al. (2020) +2 other references |
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Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada