Cordylite-(La)
A valid IMA mineral species
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About Cordylite-(La)
Formula:
(Na,Ca)Ba(La,Ce,Sr)2(CO3)4F
Formula with Z=1 more clear show composition peculiarities of the mineral with developed heterovalent isomorphism Na + REE = Ca + Sr.
(NaCa)Ba2((La,Ce)3Sr)(CO3)8F2
(NaCa)Ba2((La,Ce)3Sr)(CO3)8F2
Colour:
Colorless, honey-yellow, or pinkish yellow
Lustre:
Vitreous, Greasy
Hardness:
4
Specific Gravity:
4.34
Crystal System:
Hexagonal
Member of:
Name:
Named as the La-analogue of cordylite-(Ce).
Type Locality:
Isostructural with:
Unique Identifiers
Mindat ID:
41169
Long-form identifier:
mindat:1:1:41169:1
GUID
(UUID V4):
(UUID V4):
da91da26-bc5a-474a-9df3-e4b2c4ba9ae2
IMA Classification of Cordylite-(La)
Classification of Cordylite-(La)
5.BD.
5 : CARBONATES (NITRATES)
B : Carbonates with additional anions, without H2O
D : With rare earth elements (REE)
5 : CARBONATES (NITRATES)
B : Carbonates with 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 |
|---|---|---|
| Cod-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 Cordylite-(La)
Vitreous, Greasy
Transparency:
Translucent
Colour:
Colorless, honey-yellow, or pinkish yellow
Streak:
White
Hardness:
4 on Mohs scale
Tenacity:
Brittle
Cleavage:
Perfect
on {0001}
on {0001}
Fracture:
Irregular/Uneven, Conchoidal
Density:
4.34 g/cm3 (Measured) 4.329 g/cm3 (Calculated)
Optical Data of Cordylite-(La)
Type:
Uniaxial (-)
RI values:
nω = 1.749 - 1.751 nε = 1.573 - 1.574
Max Birefringence:
δ = 0.176 - 0.177
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
Chemistry of Cordylite-(La)
Mindat Formula:
(Na,Ca)Ba(La,Ce,Sr)2(CO3)4F
Formula with Z=1 more clear show composition peculiarities of the mineral with developed heterovalent isomorphism Na + REE = Ca + Sr.
(NaCa)Ba2((La,Ce)3Sr)(CO3)8F2
Formula with Z=1 more clear show composition peculiarities of the mineral with developed heterovalent isomorphism Na + REE = Ca + Sr.
(NaCa)Ba2((La,Ce)3Sr)(CO3)8F2
Crystallography of Cordylite-(La)
Crystal System:
Hexagonal
Class (H-M):
6/mmm (6/m 2/m 2/m) - Dihexagonal Dipyramidal
Space Group:
P63/mmc
Cell Parameters:
a = 5.1182(5) Å, c = 23.1785(16) Å
Ratio:
a:c = 1 : 4.529
Unit Cell V:
525.84 ų (Calculated from Unit Cell)
Z:
1
Morphology:
Irregularly-shaped, tabular, or short-prismatic hexagonal crystals. Froms observed are {1010} and {0001}.
Crystal Structure
Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
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CIF File Best | x | y | z | a | b | c
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0019703 | Cordylite-(La) | Mills S J, Kartashov P M, Kampf A R, Konev A A, Konev A A, Raudsepp M (2012) Cordylite-(La), a new mineral species in fenite from the Biraya Fe-REE deposit, Irkutsk, Russia The Canadian Mineralogist 50 1281-1290 | 2012 | Biraya Fe-REE deposit, Irkutsk, Russia | 0 | 293 | |
| 0019704 | Cordylite-(La) | Mills S J, Kartashov P M, Kampf A R, Konev A A, Konev A A, Raudsepp M (2012) Cordylite-(La), a new mineral species in fenite from the Biraya Fe-REE deposit, Irkutsk, Russia The Canadian Mineralogist 50 1281-1290 | 2012 | Biraya Fe-REE deposit, Irkutsk, Russia | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 4.371 Å | (65) |
| 4.148 Å | (54) |
| 3.532 Å | (100) |
| 3.209 Å | (95) |
| 2.562 Å | (89) |
| 2.213 Å | (52) |
| 2.051 Å | (44) |
| 1.921 Å | (52) |
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 Cordylite-(La)
General Appearance of Type Material:
Colorless to yellow, irregularly-shaped, tabular, or short-prismatic hexagonal crystals up to about 3 mm across.
Place of Conservation of Type Material:
Mineral Science Department, Natural History Museum of Los Angeles County, Los Angeles, USA (63360).
A.E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia (4028/1, 4029/1).
A.E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia (4028/1, 4029/1).
Geological Setting of Type Material:
Carbonatite veins in fenites.
Associated Minerals at Type Locality:
Synonyms of Cordylite-(La)
Cordylite (in part)
Other Language Names for Cordylite-(La)
German:Cordylit-(La)
Relationship of Cordylite-(La) to other Species
Member of:
Other Members of this group:
| Cordylite-(Ce) | NaBaCe2(CO3)4F | Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc |
| Unnamed (Cordylite-like (Ca0.5[]0.5)BaCe2[CO3]4F) | Ca◻Ba2Ce4[CO3]8F2 |
Common Associates
Associated Minerals Based on Photo Data:
| 1 photo of Cordylite-(La) associated with Strontianite | SrCO3 |
| 1 photo of Cordylite-(La) associated with Strontium-rich Calcite | (Ca,Sr)CO3 |
| 1 photo of Cordylite-(La) associated with Talc | Mg3Si4O10(OH)2 |
Related Minerals - Strunz-mindat Grouping
| 5.BD.05 | Cordylite-(Ce) | NaBaCe2(CO3)4F |
| 5.BD.05 | Lukechangite-(Ce) | Na3Ce2(CO3)4F |
| 5.BD.05 | Unnamed (Cordylite-like (Ca0.5[]0.5)BaCe2[CO3]4F) | Ca◻Ba2Ce4[CO3]8F2 |
| 5.BD.10 | Zhonghuacerite-(Ce) | Ba2Ce(CO3)3F |
| 5.BD.10 | Kukharenkoite-(Ce) | Ba2Ce(CO3)3F |
| 5.BD.10 | Kukharenkoite-(La) | Ba2(La,Ce,Th)(CO3)3F |
| 5.BD.15 | Cebaite-(Ce) | Ba3Ce2(CO3)5F2 |
| 5.BD.15 | Cebaite-(Nd) | Ba3(Nd,Ce)2(CO3)5F2 |
| 5.BD.18 | Arisite-(Ce) | NaCe2(CO3)2[F2x(CO3)1-x]F |
| 5.BD.18 | Arisite-(La) | NaLa2(CO3)2[F2x(CO3)1-x]F |
| 5.BD.20a | Bastnäsite-(Ce) | Ce(CO3)F |
| 5.BD.20a | Bastnäsite-(La) | La(CO3)F |
| 5.BD.20a | Bastnäsite-(Y) | Y(CO3)F |
| 5.BD.20a | Hydroxylbastnäsite-(Ce) | Ce(CO3)(OH) |
| 5.BD.20a | Hydroxylbastnäsite-(Nd) | Nd(CO3)(OH) |
| 5.BD.20a | Hydroxylbastnäsite-(La) | (La,Nd,Ce)(CO3)(OH,F) |
| 5.BD.20b | Parisite-(Ce) | CaCe2(CO3)3F2 |
| 5.BD.20b | Parisite-(Nd) | Ca(Nd,Ce,La)2(CO3)3F2 |
| 5.BD.20d | Röntgenite-(Ce) | Ca2(Ce,La)3(CO3)5F3 |
| 5.BD.20c | Synchysite-(Ce) | CaCe(CO3)2F |
| 5.BD.20c | Synchysite-(Nd) | CaNd(CO3)2F |
| 5.BD.20c | Synchysite-(Y) | CaY(CO3)2F |
| 5.BD.20a | Thorbastnäsite | ThCa(CO3)2F2 · 3H2O |
| 5.BD.20a | Bastnäsite-(Nd) | Nd(CO3)F |
| 5.BD.20c | Hydroxylsynchysite-(Ce) | Ca(Ce,La)(CO3)2(OH) |
| 5.BD.20c | Synchysite-(La) | Ca(La,Nd)(CO3)2F |
| 5.BD.20b | Parisite-(La) | CaLa2(CO3)3F2 |
| 5.BD.25 | Horváthite-(Y) | NaY(CO3)F2 |
| 5.BD.25 | Qaqarssukite-(Ce) | Ba(Ce,REE)(CO3)2F |
| 5.BD.35 | Huanghoite-(Ce) | BaCe(CO3)2F |
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 Cordylite-(La)
mindat.org URL:
https://www.mindat.org/min-41169.html
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References for Cordylite-(La)
Reference List:
Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2011) New minerals and nomenclature modifications approved in 2010, CNMNC Newsletter No 7. Mineralogical Magazine, 75 (1) 27-31 doi:10.1180/minmag.2011.075.1.27
Localities for Cordylite-(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.
Paraguay | |
| |
Russia (TL) | |
|
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Ust'-Biraya, Biraya Fe-REE ore occurrence, Biraya and Bya Rivers confluence area, Vitim Plateau, Irkutsk Oblast, Russia