Ferronordite-(La)
A valid IMA mineral species
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About Ferronordite-(La)
Formula:
Na3Sr(La,Ce)FeSi6O17
Colour:
Colorless to pale brown
Lustre:
Vitreous
Hardness:
5
Specific Gravity:
3.54
Crystal System:
Orthorhombic
Member of:
Name:
For the association with Ferronordite-(Ce).
Unique Identifiers
Mindat ID:
11208
Long-form identifier:
mindat:1:1:11208:2
Similar Names
| Ferronordite-(Ce) | A valid IMA mineral species | Na3SrCeFe2+Si6O17 |
IMA Classification of Ferronordite-(La)
Classification of Ferronordite-(La)
9.DO.15
9 : SILICATES (Germanates)
D : Inosilicates
O : Inosilicates with 7-, 8-, 10-, 12- and 14-periodic chains
9 : SILICATES (Germanates)
D : Inosilicates
O : Inosilicates with 7-, 8-, 10-, 12- and 14-periodic chains
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 |
|---|---|---|
| Fnor-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 Ferronordite-(La)
Vitreous
Transparency:
Transparent
Colour:
Colorless to pale brown
Streak:
White
Hardness:
5 on Mohs scale
Tenacity:
Brittle
Cleavage:
Perfect
(010)
(010)
Density:
3.54 g/cm3 (Measured) 3.62 g/cm3 (Calculated)
Optical Data of Ferronordite-(La)
Type:
Biaxial (-)
RI values:
nα = 1.624(1) nβ = 1.637(1) nγ = 1.644(1)
2V:
Measured: 60° , Calculated: 72°
Max. Birefringence:
δ = 0.020
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
Dispersion:
г>v, weak
Chemistry of Ferronordite-(La)
Mindat Formula:
Na3Sr(La,Ce)FeSi6O17
Element Weights:
Crystallography of Ferronordite-(La)
Crystal System:
Orthorhombic
Cell Parameters:
a = 14.440(5) Å, b = 5.191(5) Å, c = 19.86(2) Å
Ratio:
a:b:c = 2.782 : 1 : 3.826
Unit Cell V:
1,488.67 ų (Calculated from Unit Cell)
Z:
4
Comment:
Pcaa space group by analogy with other members nordite group
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 Ferronordite-(La)
General Appearance of Type Material:
tabular crystals uр to 8 x 5 x 1 mm, spherulites with diameter 1.5 cm in ussingite.
Place of Conservation of Type Material:
Fersman Minera1ogica1 Museum of Russian Academy of Sciences, Moscow
Geological Setting of Type Material:
ussingite cores of two hyperagpaitic pegmatites
Associated Minerals at Type Locality:
Synonyms of Ferronordite-(La)
Other Language Names for Ferronordite-(La)
Dutch:Ferronordiet-(La)
German:Ferronordit-(La)
Russian:Ферронордит-(La)
Simplified Chinese:硅铁锶镧钠石
Traditional Chinese:矽鐵鍶鑭鈉石
Relationship of Ferronordite-(La) to other Species
Member of:
Other Members of Nordite Group:
| Ferronordite-(Ce) | Na3SrCeFe2+Si6O17 | Orth. mmm(2/m2/m2/m) : Pcca |
| Illoqite-(Ce) | Na2NaBaCeZnSi6O17 | Orth. mmm(2/m2/m2/m) : Pcca |
| Manganonordite-(Ce) | Na3SrCeMn2+Si6O17 | Orth. mmm(2/m2/m2/m) : Pcca |
| Nordite-(Ce) | (Ce,La)(Sr,Ca)Na2(Na,Mn)(Zn,Mg)Si6O17 | Orth. mmm(2/m2/m2/m) : Pcca |
| Nordite-(La) | (La,Ce)(Sr,Ca)Na2(Na,Mn)(Zn,Mg)Si6O17 | Orth. mmm(2/m2/m2/m) : Pcca |
Common Associates
Associations Based on Photo Data:
| 4 photos of Ferronordite-(La) associated with Rhabdophane-(La) | La(PO4) · H2O |
| 4 photos of Ferronordite-(La) associated with Ussingite | Na2AlSi3O8OH |
| 3 photos of Ferronordite-(La) associated with Ferronordite-(Ce) | Na3SrCeFe2+Si6O17 |
| 2 photos of Ferronordite-(La) associated with Magnesio-arfvedsonite | NaNa2(Mg4Fe3+)(Si8O22)(OH)2 |
| 2 photos of Ferronordite-(La) associated with Epistolite | (Na◻)Nb2Na3Ti(Si2O7)2O2(OH)2(H2O)4 |
Related Minerals - Strunz-mindat Grouping
| 9.DO. | Braccoite | NaMn2+5[Si5As5+O17(OH)](OH) |
| 9.DO. | Illoqite-(Ce) | Na2NaBaCeZnSi6O17 |
| 9.DO.05 | Pyroxferroite | (Fe,Mn,Ca)SiO3 |
| 9.DO.05 | Pyroxmangite | Mn2+SiO3 |
| 9.DO.10 | Pellyite | Ba2CaFe2+2Si6O17 |
| 9.DO.15 | Manganonordite-(Ce) | Na3SrCeMn2+Si6O17 |
| 9.DO.15 | Ferronordite-(Ce) | Na3SrCeFe2+Si6O17 |
| 9.DO.15 | Nordite-(Ce) | (Ce,La)(Sr,Ca)Na2(Na,Mn)(Zn,Mg)Si6O17 |
| 9.DO.15 | Nordite-(La) | (La,Ce)(Sr,Ca)Na2(Na,Mn)(Zn,Mg)Si6O17 |
| 9.DO.15 | Meieranite | Na2Sr3MgSi6O17 |
| 9.DO.20 | Alamosite | PbSiO3 |
| 9.DO.25 | Liebauite | Ca3Cu5Si9O26 |
| 9.DO.30 | Vladykinite | Na3Sr4(Fe2+Fe3+)Si8O24 |
| 9.DO.30 | Rundqvistite-(Ce) | Na3(Sr3Ce)[Zn2Si8O24] |
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 Ferronordite-(La)
mindat.org URL:
https://www.mindat.org/min-11208.html
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References for Ferronordite-(La)
Localities for Ferronordite-(La)
Showing 1 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.
Russia (TL) | |
| Pekov et al. (2001) |
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Bolshoi Punkaruaiv Mountain, Lovozersky District, Murmansk Oblast, Russia