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Monzonite

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A coarse-grained igneous rock containing almost equal amounts of alkali feldspar and plagioclase, and thus intermediate between syenite and diorite. Quartz is minor or absent. Either hornblende or diopside, or both, are present and biotite is a common constituent. Accessories are apatite, zircon, sphene, and opaque oxides.
The intrusive equivalent of latite.

Synonym of: syenodiorite.


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Classification of MonzoniteHide

Monzonite is in section 8 of the QAPF diagram.

Sub-divisions of MonzoniteHide

Mineralogy of MonzoniteHide

Essential minerals - these are minerals that are required within the classification of this rock:
Feldspar > Alkali FeldsparFeldspar Group minerals rich in Potassium or Sodium.
Feldspar > PlagioclaseA petrological term for Albite-Anorthite Series.
Non-essential minerals - these minerals are common, sometimes major components, but are not always present:
AmphiboleAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
PyroxeneA petrological term for Pyroxene Group.

Synonyms of MonzoniteHide

Internet Links for MonzoniteHide

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