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Gabbronorite

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A gabbroid with <5% olivine and subequal amounts of clino- and ortho- pyroxenes.


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Classification of GabbronoriteHide

QAPF_P_10.png

Gabbro is in section 10 of the QAPF diagram.

Mineralogy of GabbronoriteHide

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:
Amphibole > HornblendeAn informal name for dark green to black amphiboles, mostly ferro-hornblende or ...
Mica > BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2

Internet Links for GabbronoriteHide

 
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