Alkali olivine basalt
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About Alkali olivine basaltHide
A subtype of alkali basalt characterised by abundant olivine, often as small phenocrysts.
Classification of Alkali olivine basaltHide
Mineralogy of Alkali olivine basaltHide
Essential minerals - these are minerals that are required within the classification of this rock:
|Feldspar > Plagioclase||A petrological term for Albite-Anorthite Series.|
|Olivine||Equivalent to Fayalite-Forsterite Series; usually a more or less Fe-bearing forsterite.|
|Pyroxene > Clinopyroxene > Augite||(CaxMgyFez)(Mgy1Fez1)Si2O6|
Non-essential minerals - these minerals are common, sometimes major components, but are not always present: