Log In
Rémondite-(Ce)
A valid IMA mineral species
This page is currently not sponsored. Click here to sponsor this page.
About Rémondite-(Ce)
Formula:
Na3(Ce,Ca,Na)3(CO3)5
Colour:
Orange-red to brown
Lustre:
Vitreous
Hardness:
3 - 3½
Specific Gravity:
3.43
Crystal System:
Monoclinic
Member of:
Name:
To honour Dr. Guy Rémond (1935 – 2 December 2014), physicist, Bureau de Recherches Géologiques et Minières, Orléans, France, for his work on the physics of minerals. The suffix/modifier indicates the predominance of cerium over other rare-earth elements in the composition.
Type Locality:
This page provides mineralogical data about Rémondite-(Ce).
Name Encoding
ASCII-7:
Remondite-(Ce)
Unique Identifiers
Mindat ID:
3388
Long-form identifier:
mindat:1:1:3388:2
Similar Names
| Raimondite | ||
| Redmondite | A valid IMA mineral species | [Pb8O2Zn(OH)6](S2O3)4 |
| Redondite | A valid IMA mineral species - grandfathered - questionable | AlPO4 · 2H2O |
| Rémondite | ||
| Rémondite-(La) | A valid IMA mineral species | Na3(La,Ca,Na)3(CO3)5 |
IMA Classification of Rémondite-(Ce)
Classification of Rémondite-(Ce)
5.AD.15
5 : CARBONATES (NITRATES)
A : Carbonates without additional anions, without H2O
D : With rare-earth elements (REE)
5 : CARBONATES (NITRATES)
A : Carbonates without additional anions, without H2O
D : With rare-earth elements (REE)
14.4.5.1
14 : ANHYDROUS NORMAL CARBONATES
4 : Miscellaneous
14 : ANHYDROUS NORMAL CARBONATES
4 : Miscellaneous
11.8.8
11 : Carbonates
8 : Carbonates of the rare earths
11 : Carbonates
8 : Carbonates of the rare earths
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 |
|---|---|---|
| Rém-Ce | 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 Rémondite-(Ce)
Vitreous
Transparency:
Transparent, Translucent
Colour:
Orange-red to brown
Hardness:
3 - 3½ on Mohs scale
Cleavage:
Imperfect/Fair
Fracture:
Conchoidal
Density:
3.43(1) g/cm3 (Measured) 3.46 g/cm3 (Calculated)
Optical Data of Rémondite-(Ce)
Type:
Biaxial (+)
RI values:
nα = 1.632(2) nβ = 1.633(2) nγ = 1.638(2)
2V:
Measured: 40° to 48°, Calculated: 50°
Max. Birefringence:
δ = 0.006
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:
High (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.
Dispersion:
weak to distinct
Chemistry of Rémondite-(Ce)
Mindat Formula:
Na3(Ce,Ca,Na)3(CO3)5
Element Weights:
Crystallography of Rémondite-(Ce)
Crystal System:
Monoclinic
Class (H-M):
2 - Sphenoidal
Space Group:
P21
Setting:
P21
Cell Parameters:
a = 10.412 Å, b = 6.291 Å, c = 10.414 Å
β = 119.80°
β = 119.80°
Ratio:
a:b:c = 1.655 : 1 : 1.655
Unit Cell V:
591.93 ų (Calculated from Unit Cell)
Z:
2
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 5.17 Å | (40) |
| 3.010 Å | (40) |
| 3.006 Å | (70) |
| 2.617 Å | (50) |
| 2.609 Å | (70) |
| 2.589 Å | (100) |
| 2.132 Å | (70) |
| 2.127 Å | (50) |
| 1.908 Å | (40) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 35 : Ultra-alkali and agpaitic igneous rocks |
Type Occurrence of Rémondite-(Ce)
General Appearance of Type Material:
Massive.
Place of Conservation of Type Material:
Muséum Nationale d’Histoire Naturelle, Paris, France, number 51314 (holotype).
Geological Setting of Type Material:
Massive fillings in veinlets that cut nepheline syenite orthogneiss.
Associated Minerals at Type Locality:
Synonyms of Rémondite-(Ce)
Other Language Names for Rémondite-(Ce)
Relationship of Rémondite-(Ce) to other Species
Member of:
Other Members of Burbankite Group:
| Burbankite | (Na,Ca)3(Sr,Ba,Ce)3(CO3)5 | Hex. 6mm : P63mc |
| Calcioburbankite | Na3(Ca,REE,Sr)3(CO3)5 | Hex. 6mm : P63mc |
| Khanneshite | (Na,Ca)3(Ba,Sr,Ce,Ca)3(CO3)5 | Hex. 6mm : P63mc |
| Lishiite | (Ca2◻)Sr3(CO3)5 | Hex. 6mm : P63mc |
| Petersenite-(Ce) | Na4(Ce,La,Nd)2(CO3)5 | Mon. 2 : P21 |
| Rémondite-(La) | Na3(La,Ca,Na)3(CO3)5 | Mon. 2 : P21 |
| Sanrománite | Na2CaPb3[CO3]5 | Hex. 6mm : P63mc |
Common Associates
Associations Based on Photo Data:
| 11 photos of Rémondite-(Ce) associated with Siderite | FeCO3 |
| 4 photos of Rémondite-(Ce) associated with Gaidonnayite | Na2Zr(Si3O9) · 2H2O |
| 4 photos of Rémondite-(Ce) associated with Aegirine | NaFe3+Si2O6 |
| 4 photos of Rémondite-(Ce) associated with Bastnäsite-(Ce) | Ce(CO3)F |
| 4 photos of Rémondite-(Ce) associated with Eudidymite | Na2Be2Si6O15 · H2O |
| 4 photos of Rémondite-(Ce) associated with 'Smoky Quartz' | SiO2 |
| 3 photos of Rémondite-(Ce) associated with Beryllonite | NaBePO4 |
| 3 photos of Rémondite-(Ce) associated with Adamsite-(Y) | NaY[CO3]2 · 6H2O |
| 3 photos of Rémondite-(Ce) associated with Zircon | Zr(SiO4) |
| 3 photos of Rémondite-(Ce) associated with Calcite | CaCO3 |
Related Minerals - Strunz-mindat Grouping
| 5.AD.05 | Sahamalite-(Ce) | (Mg,Fe)(Ce,La,Nd)2(CO3)4 |
| 5.AD.15 | Rémondite-(La) | Na3(La,Ca,Na)3(CO3)5 |
| 5.AD.15 | Petersenite-(Ce) | Na4(Ce,La,Nd)2(CO3)5 |
| 5.AD.20 | Paratooite-(La) | (La,Sr,Ca)4CuCa(Na,Ca)2(CO3)8 |
Other Information
Notes:
Soluble in HCl and HNO3 with effervescence.
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 Rémondite-(Ce)
mindat.org URL:
https://www.mindat.org/min-3388.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
External Links:
Mineral Dealers:
References for Rémondite-(Ce)
Localities for Rémondite-(Ce)
Showing 8 localities.
symbol to view information about a locality.
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.
Cameroon (TL) | |
| Cesbron et al. (1988) |
Canada | |
| HORVÁTH et al. (2000) |
Russia | |
| Pavel M. Kartashov analytical data (2013) |
| PEKOV et al. (2013) |
| Pekov et al. (2004) | |
| ... | |
| Chukanov et al. (2005) |
| Belovitskaya et al. (2004) |
Quick NavTopAbout Rémondite-(Ce)Name EncodingUnique IdentifiersSimilar NamesIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography X-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesRelationshipsCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List
Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada