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Nepheline-monzogabbro

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A foid-monzogabbro where nepheline is the most abundant foid.


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Classification of Nepheline-monzogabbroHide

Foid-monzogabbro is in section 13 of the QAPF diagram.

Sub-divisions of Nepheline-monzogabbroHide

Mineralogy of Nepheline-monzogabbroHide

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.
Feldspar > Alkali FeldsparFeldspar Group minerals rich in Potassium or Sodium.
Feldspathoid > NephelineNa3K(Al4Si4O16)
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 > BiotiteA series or subgroup of the Mica Group.

Internet Links for Nepheline-monzogabbroHide

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