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A local collective name for a series of andesites and dacites containing cordierite possibly formed by assimilation of sillimanite-cordierite gneiss.
Classification of AmboniteHide
Mineralogy of AmboniteHide
Essential minerals - these are minerals that are required within the classification of this rock:
|Feldspar > Plagioclase||A petrological term for Albite-Anorthite Series.|
Non-essential minerals - these minerals are common, sometimes major components, but are not always present: