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A coarse grained felsic igneous rock having an alkali-feldspar/plagioclase ratio from 0.9-0.35 and 0-20% quartz.
Classification of SyenitoidHide
Sub-divisions of SyenitoidHide
Mineralogy of SyenitoidHide
Essential minerals - these are minerals that are required within the classification of this rock:
Non-essential minerals - these minerals are common, sometimes major components, but are not always present:
Pronounciation of SyenitoidHide
|Jolyon & Katya Ralph||United Kingdom|