| 单词 | pyroxene |
| 释义 | BETA Examples ofpyroxeneDictionary> Examples ofpyroxene pyroxeneisn’t in the Cambridge Dictionary yet. You can help! Add a definition Note the presence of a cummingtonite with apyroxene-like shape. From theCambridge English Corpus The lower two-thirds of the unit is a medium-grained, lithic, crystal tuff, now largely altered to zeolites but with relictpyroxeneand feldspar crystals recognizable. From theCambridge English Corpus The two pyroxenes form discrete crystals as well as lamellar, drop-like or more irregular intergrowths with each other. From theCambridge English Corpus The volcaniclastic siltstone is composed of crystals (olivine,pyroxene, quartz), glass (globules and irregularly shaped shards) and rock fragments. From theCambridge English Corpus Other samples have glomerocrystic aggregates of plagioclase andpyroxene. From theCambridge English Corpus The magnetic fraction of the surface sand containspyroxeneand feldspar grains as in the bulk material, but little quartz. From theCambridge English Corpus It is generally well banded on a millimetre to centimetre scale as defined by the variation from plagioclase topyroxene-garnet-rich layers. From theCambridge English Corpus Unweathered basalt minerals such as olivine andpyroxenecontain high amounts of reduced iron that microbes can scavenge. From theCambridge English Corpus Layering is characterized by dark layers containing high proportions of olivine andpyroxenealternating with light layers containing high proportions of plagioclase. From theCambridge English Corpus However,pyroxeneis commonly entirely altered and some tabular pseudomorphs indicate that orthopyroxene was also present. From theCambridge English Corpus The gabbros and microgabbros includepyroxene(20-30 %), olivine (4-10 %), and biotite (1-4 %). From theCambridge English Corpus Crystallization was moderately advanced (c. 20 %) with the precipitation of plagioclase,pyroxeneand oxide placing the magma below its liquidus temperature. From theCambridge English Corpus The groundmass consists of plagioclase,pyroxeneand glass with an interstitial texture. From theCambridge English Corpus A succession of mineral reactions is shown by inclusions in and overgrowths on garnet, pyroxenes and amphiboles. From theCambridge English Corpus This is a particular problem for clay minerals in ground mixtures because they are more fragile than some other minerals such as quartz andpyroxene. From theCambridge English Corpus These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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