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Epidiorite (of Gümbel)

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A metamorphosed gabbro or dolerite in which generally fibrous amphibole (uralite) has replaced the original clinopyroxene (commonly augite). It is usually massive but may have some schistosity. Commonly found as dykes and usually composed of amphibole, plagioclase, chlorite, ilmenite and magnetite.


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Classification of Epidiorite (of Gümbel)Hide

Mineralogy of Epidiorite (of Gümbel)Hide

Essential minerals - these are minerals that are required within the classification of this rock:
AmphiboleAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
ChloriteA name commonly used for undifferentiated members of the chlorite group.
Feldspar > PlagioclaseA petrological term for Albite-Anorthite Series.
IlmeniteFe2+TiO3
MagnetiteFe2+Fe3+2O4

References for Epidiorite (of Gümbel)Hide

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Fettes (et al.), Metamorphic Rocks - A Classification and Glossary of Terms (2007) Cambridge University Press

Internet Links for Epidiorite (of Gümbel)Hide

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