Lujavrite
A rock subtype
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About Lujavrite
A term, originally spelt luijaurite, for a melanocratic agpaitic variety of nepheline-syenite rich in eudialyte, arfvedsonite and aegirine with perthitic alkali feldspar or separate microcline and albite. A pronounced igneous lamination is characteristic, as is the abundance in minerals rich in incompatible elements such as the REE, U, Th, Li etc.
Unique Identifiers
Mindat ID:
50571
Long-form identifier:
mindat:1:1:50571:4
GUID
(UUID V4):
(UUID V4):
0da8563d-19ba-4fc8-9509-a07ce76a4129
Classification of Lujavrite
Foid-syenite is in section 11 of the QAPF diagram.
Mineralogy of Lujavrite
Essential minerals - these are minerals that are required within the classification of this rock:
| Amphibole > Arfvedsonite | [Na][Na2][Fe2+4Fe3+]Si8O22(OH)2 |
| Eudialyte | Na15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2 |
| Feldspar > Alkali Feldspar > Albite | Na(AlSi3O8) |
| Feldspar > Alkali Feldspar > Microcline | K(AlSi3O8) |
| Feldspathoid > Nepheline | Na3K(Al4Si4O16) |
| Pyroxene > Clinopyroxene > Aegirine | NaFe3+Si2O6 |
Non-essential minerals - these minerals are common, sometimes major components, but are not always present:
| Feldspar > Perthite | An intergrowth of albite or oligoclase with a microcline host, occasionally also with a ... |
Synonyms of Lujavrite
Common Associates
Associated Minerals Based on Photo Data:
| 5 photos of Lujavrite associated with Arfvedsonite | [Na][Na2][Fe2+4Fe3+]Si8O22(OH)2 |
| 5 photos of Lujavrite associated with Albite | Na(AlSi3O8) |
| 5 photos of Lujavrite associated with Nepheline | Na3K(Al4Si4O16) |
| 5 photos of Lujavrite associated with Alkali Feldspar | |
| 1 photo of Lujavrite associated with Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| 1 photo of Lujavrite associated with Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| 1 photo of Lujavrite associated with Aegirine | NaFe3+Si2O6 |
Internet Links for Lujavrite
mindat.org URL:
https://www.mindat.org/min-50571.html
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References for Lujavrite
Localities for Lujavrite
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.
Brazil | |
| |
| Guarino et al. (2021) | |
China | |
| Wu et al. (2019) |
DR Congo | |
| Denaeyer (1958) +5 other references |
Greenland | |
| Jones et al. (1985) |
| Finch (1990) | |
| Coulson (2003) | |
| |
| Makovicky et al. (1980) | |
| Petersen et al. (2005) | |
| Bøggild (1953) +1 other reference |
| Otter (2016) | |
| He et al. (2022) | |
Russia | |
| Lennikov et al. (2004) |
| Zaitsev et al. (2017) +1 other reference |
| Zaitsev et al. (2022) | |
| Mikhailova et al. (2023) |
| Ivanyuk et al. (2012) |
| Pekov (2000) |
| Menshikov et al. (2015) | |
| Ivanyuk et al. (2012) | |
South Africa | |
| Liferovich et al. (2006) |
USA | |
| Stobbe et al. (1956) |
Ilímaussaq complex, Kujalleq, Greenland