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Quartz-monzonite

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A syenitoid with 5-20% quartz and subequal Kspar and plagioclase (35-65% of the feldspars being plagioclase) on the QAPF diagram, and no foids.

This is a coarse-grained equivalent of quartz-latite.


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Classification of Quartz-monzoniteHide

Quartz-monzonite is in section 8* of the QAPF diagram.

Sub-divisions of Quartz-monzoniteHide

Mineralogy of Quartz-monzoniteHide

Essential minerals - these are minerals that are required within the classification of this rock:
FeldsparA petrological term for Feldspar Group.
Silica > QuartzSiO2
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 > BiotiteA series or subgroup of the Mica Group.

Internet Links for Quartz-monzoniteHide

Mineral and/or Locality  
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