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Gabbrodiorite

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Rocks on the mineralogical boundary between gabbro and diorite, i.e. their plagioclase is An50.


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Classification of GabbrodioriteHide

QAPF_P_10.png

Gabbro is in section 10 of the QAPF diagram.

Mineralogy of GabbrodioriteHide

Essential minerals - these are minerals that are required within the classification of this rock:
Feldspar > PlagioclaseA petrological term for Albite-Anorthite Series.
Mafic mineralsA petrological term for dark, rock-forming minerals rich in magnesium and/or iron.
Non-essential minerals - these minerals are common, sometimes major components, but are not always present:
Amphibole > HornblendeAn informal name for dark green to black amphiboles, mostly ferro-hornblende or ...
Mica > BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2

Internet Links for GabbrodioriteHide

 
Mineral and/or Locality  
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