One of the mysteries of the English language finally explained.
(of an igneous rock) containing a higher proportion of aluminium than of sodium and potassium (taken together).
- ‘Although biotite is capable of this, other minerals such as muscovite, garnet and cordierite are more efficient and preferentially occur in strongly peraluminous rocks.’
- ‘In keeping with their amphibole content, almost all the samples are metaluminous to slightly peraluminous.’
- ‘A poorly exposed but geochemically distinct suite of peraluminous granites occurs in the Buchan terrain.’
- ‘Future work on the beryl occurrences that are not associated with peraluminous granites might help shed light on beryl genesis.’
- ‘The migmatites are spatially and temporally related to poorly exposed peraluminous intrusions such as the Strichen granite.’
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