Rémondite-(La)
A valid IMA mineral species
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About Rémondite-(La)
Formula:
Na3(La,Ca,Na)3(CO3)5
Colour:
Bright yellow orange
Lustre:
Vitreous
Hardness:
3
Specific Gravity:
3.5
Crystal System:
Monoclinic
Member of:
Name:
For its relation to rémondite-(Ce), and the predominance of La over other rare-earth elements in the composition.
This page provides mineralogical data about Rémondite-(La).
Unique Identifiers
Mindat ID:
11012
Long-form identifier:
mindat:1:1:11012:7
GUID
(UUID V4):
(UUID V4):
60557061-c817-4f4c-9d9d-5578516741be
IMA Classification of Rémondite-(La)
Classification of Rémondite-(La)
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)
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 |
|---|---|---|
| Rém-La | 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-(La)
Vitreous
Transparency:
Transparent
Colour:
Bright yellow orange
Streak:
White
Hardness:
3 on Mohs scale
Hardness Data:
Measured
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Conchoidal
Density:
3.5 g/cm3 (Measured) 3.57 g/cm3 (Calculated)
Optical Data of Rémondite-(La)
Type:
Biaxial (-)
RI values:
nα = 1.615 nβ = 1.619 nγ = 1.622
2V:
Measured: 80°
Max Birefringence:
δ = 0.007
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r < v
Pleochroism:
Non-pleochroic
Chemistry of Rémondite-(La)
Mindat Formula:
Na3(La,Ca,Na)3(CO3)5
Crystallography of Rémondite-(La)
Crystal System:
Monoclinic
Class (H-M):
2 - Sphenoidal
Space Group:
P21
Setting:
P21
Cell Parameters:
a = 10.49 Å, b = 6.417 Å, c = 10.5 Å
β = 119.8°
β = 119.8°
Ratio:
a:b:c = 1.635 : 1 : 1.636
Unit Cell V:
613 ų
Z:
2
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 9.14 Å | (40) |
| 5.28 Å | (50) |
| 4.56 Å | (30) |
| 3.70 Å | (70) |
| 3.20 Å | (40) |
| 3.036 Å | (90) |
| 2.740 Å | (50) |
| 2.623 Å | (100) |
| 2.143 Å | (80) |
| 2.083 Å | (40) |
| 2.041 Å | (60) |
| 1.985 Å | (50) |
| 1.939 Å | (60) |
| 1.753 Å | (40) |
| 1.515 Å | (40) |
| 1.372 Å | (30) |
| 1.343 Å | (30) |
Comments:
Koashva Open Pit, Khibiny Massif, Russia. The data are from the type description.
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-(La)
General Appearance of Type Material:
Microporous aggregates up to 2 mm in size consisting of irregular grains to 5 µm.
Place of Conservation of Type Material:
A. E. Fersman Mienralogical Museum, Moscow, Russia, number 89694 (holotype).
Geological Setting of Type Material:
In a hyperagpaitic pegmatite.
Associated Minerals at Type Locality:
Synonyms of Rémondite-(La)
Other Language Names for Rémondite-(La)
Russian:Ремондит-(La)
Relationship of Rémondite-(La) to other Species
Member of:
Other Members of this 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-(Ce) | Na3(Ce,Ca,Na)3(CO3)5 | Mon. 2 : P21 |
| Sanrománite | Na2CaPb3[CO3]5 | Hex. 6mm : P63mc |
Common Associates
Associated Minerals Based on Photo Data:
| 1 photo of Rémondite-(La) associated with Synchysite-(Ce) | CaCe(CO3)2F |
Related Minerals - Strunz-mindat Grouping
| 5.AD.05 | Sahamalite-(Ce) | (Mg,Fe)(Ce,La,Nd)2(CO3)4 |
| 5.AD.15 | Petersenite-(Ce) | Na4(Ce,La,Nd)2(CO3)5 |
| 5.AD.15 | Rémondite-(Ce) | Na3(Ce,Ca,Na)3(CO3)5 |
| 5.AD.20 | Paratooite-(La) | (La,Sr,Ca)4CuCa(Na,Ca)2(CO3)8 |
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 Rémondite-(La)
mindat.org URL:
https://www.mindat.org/min-11012.html
Please feel free to link to this page.
Please feel free to link to this page.
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External Links:
References for Rémondite-(La)
Reference List:
Localities for Rémondite-(La)
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.
Canada | |
| ZVMO 129 (1) |
Russia (TL) | |
| Pekov et al. (2000) |
| Pekov et al. (2004) |
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Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada