Lusitanite
A rock subtype
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Name:
Named for Lusitania, the Roman name for Portugal.
A variety of peralkaline alkali-feldspar-syenite containing riebeckite and aegirine. Also used as family name for rocks consisting essentially of alkali feldspar.
Unique Identifiers
Mindat ID:
50419
Long-form identifier:
mindat:1:1:50419:5
GUID
(UUID V4):
(UUID V4):
c74a7d2e-1279-4d61-966f-dae9664cbb40
Classification of Lusitanite
Alkali-felddspar-syenite is in section 6 of the QAPF diagram.
Mineralogy of Lusitanite
Essential minerals - these are minerals that are required within the classification of this rock:
Feldspar > Alkali Feldspar | A subgroup of the Feldspar Group, poor in calcium, and mostly rich in potassium. |
Pyroxene > Clinopyroxene > Aegirine | NaFe3+Si2O6 |
Riebeckite | ◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2 |
References for Lusitanite
Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Le Maitre (ed.) (2002) Igneous Rocks - A Classification and Glossary of Terms. Cambridge Press
Internet Links for Lusitanite
mindat.org URL:
https://www.mindat.org/min-50419.html
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