monzonite
/ˈmɒnzənʌɪt
/noun [mass noun] Geology
A granular igneous rock with a composition intermediate between syenite and diorite, containing approximately equal amounts of orthoclase and plagioclase.The northwestern parts of La Hague comprise a suite of igneous units ranging in composition from diorite to granite monzonite collectively termed the Northern Granites....
- The St Martin monzonite is the earliest member of the Northern Granites.
- That is why at 8 A.M. on a Saturday I find myself standing in a parking lot in Southern California's Joshua Tree National Park, which is famous for the quartz monzonite rock that draws climbers from all over the world.
Derivatives
monzonitic
- A wide variety of rocks of monzonitic composition make up about 40% of the magmatic rocks in the region.
Origin
Late 19th century: named after Mount Monzoni in the Tyrol, Italy, + -ite1.
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