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Quartz-plagioclase-hornblende augen gneiss

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An augen gneiss containing a fine-grained hornblende groundmass with numerous large crystals of quartz and plagioclase.


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Classification of Quartz-plagioclase-hornblende augen gneissHide

Mineralogy of Quartz-plagioclase-hornblende augen gneissHide

Essential minerals - these are minerals that are required within the classification of this rock:
Amphibole > HornblendeAn informal name for dark green to black amphiboles, mostly ferro-hornblende or ...
Feldspar > PlagioclaseA petrological term for Albite-Anorthite Series.
Silica > QuartzSiO2
Non-essential minerals - these minerals are common, sometimes major components, but are not always present:
Mica > BiotiteA series or subgroup of the Mica Group.

Synonyms of Quartz-plagioclase-hornblende augen gneissHide

References for Quartz-plagioclase-hornblende augen gneissHide

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

Internet Links for Quartz-plagioclase-hornblende augen gneissHide

Mineral and/or Locality  
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