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A granitoid (a coarse grained igneous rock composed mostly of quartz, Kspar (alkali-feldspar) and plagioclase), with subequal amounts of plagioclase and Kspar. More specifically a granite having an alkali-feldspar/total feldspar ratio from 0.35-0.65 on the QAPF diagram. Often called an adamellite, though this name has been used for other rocktypes also.
Classification of MonzograniteHide
Sub-divisions of MonzograniteHide
Mineralogy of MonzograniteHide
Essential minerals - these are minerals that are required within the classification of this rock:
|Feldspar > Alkali Feldspar||Feldspar Group minerals rich in Potassium or Sodium.|
|Feldspar > Plagioclase||A petrological term for Albite-Anorthite Series.|
|Silica > Quartz||SiO2|
Non-essential minerals - these minerals are common, sometimes major components, but are not always present:
References for MonzograniteHide
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Le Maitre, R.W., (editor), Streckeisen, A., Zanettin, B., Le Bas, M.J., Bonin, B., Bateman, P., Bellieni, G., Dudek, A., Efremova,S., Keller, A.J., Lameyre, J., Sabine, P.A., Schmid, R., Sørensen,H., Woolley, A.R., (2002) IGNEOUS ROCKS A Classification and Glossary of Terms, Recommendations of the International Union of Geological Sciences Subcommission on the Systematics of Igneous Rocks. Cambridge University Press. 2nd edition.