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Quartz-norite

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A gabbro composed essentially of calcic plagioclase, quartz and orthopyroxene.


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Classification of Quartz-noriteHide

Gabbro is in section 10 of the QAPF diagram.

Sub-divisions of Quartz-noriteHide

Mineralogy of Quartz-noriteHide

Essential minerals - these are minerals that are required within the classification of this rock:
Calcic plagioclaseA petrological term for plagioclase series feldspars dominant in calcium.
Pyroxene > OrthopyroxeneA petrological term for Orthopyroxene Subgroup.
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-noriteHide

Mineral and/or Locality  
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