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A term used in the Alps for a metagranitic rock with a gneissose structure containing greenschist facies minerals such as sericite, chlorite, epidote, and garnet, and shows evidence of a composite origin or of crystallization (or partial recrystallization) under stress after consolidation. Also spelled protogene. The term, dating from 1806, is obsolete.
Classification of ProtogineHide
Mineralogy of ProtogineHide
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: