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Monzodiorite

A rock classification type
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A dioritic rock with <5% quartz and 10-35% alkali feldspar on the QAPF diagram.

A term suggested to replace syenodiorite for a plutonic rock intermediate between monzonite and diorite.


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Unique IdentifiersHide

Mindat ID:
48244
Long-form identifier:
mindat:1:1:48244:0

Classification of MonzodioriteHide

QAPF_P_9.png

Monzodiorite is in section 9 of the QAPF diagram.

Sub-divisions of MonzodioriteHide

Mineralogy of MonzodioriteHide

Essential minerals - these are minerals that are required within the classification of this rock:
Feldspar > Alkali FeldsparA subgroup of the Feldspar Group, poor in calcium, and mostly rich in potassium.
Feldspar > Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Non-essential minerals - these minerals are common, sometimes major components, but are not always present:
Amphibole > HornblendeAnCa2(Z2+5-mZ3+m)(Si8-(n+m)Al(n+m))(OH,F,Cl)2
Mica > BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Silica > QuartzSiO2

Synonyms of MonzodioriteHide

Syenodiorite (in part)

Other Language Names for MonzodioriteHide

Internet Links for MonzodioriteHide

References for MonzodioriteHide

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