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monchiquite
monchiquite (mɒnˈʃiːkaɪt) n (Geological Science) a type of rock made up of large crystals of, among other constituents, olivine and amphibole and which is found in an analcite groundmassmonchiquite
monchiquite[′man·chə‚kwīt] (petrology) A lamprophyre composed of olivine, pyroxene, and usually mica or amphibole phenocrysts embedded in a glass or analcime groundmass. |