mon·zo·nite (m n-z  n t , mnz -nt)n. An igneous rock composed chiefly of plagioclase and orthoclase, with small amounts of other minerals. [French, after Mount Monzoni in northeast Italy.] mon zo·nitic (mnz-n tk) adj. |
monzonite [ˈmɒnzəˌnaɪt]
n
(Earth Sciences / Geological Science) a coarse-grained plutonic igneous rock consisting of equal amounts of plagioclase and orthoclase feldspar, with ferromagnesian minerals
[from German, named after Monzoni, Tyrolean mountain where it was found]
monzonitic [ˌmɒnzəˈnɪtɪk] adj
| monzonite (mn-znt, mnz-nt) An igneous rock composed chiefly of plagioclase and orthoclase, with small amounts of amphibole, pyroxene, and biotite. Monzonite contains little or no quartz. |
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