| 单词 | porphyritic |
| 释义 | BETA Examples ofporphyriticDictionary> Examples ofporphyritic porphyriticisn’t in the Cambridge Dictionary yet. You can help! Add a definition It should be noted that some 'porphyritic' gabbros evidently formed by disintegration from enclaves of leucogabbro. From theCambridge English Corpus Theporphyriticgranophyre consists of 35-45 % phenocrysts contained within a fine-grained grey-pink matrix. From theCambridge English Corpus Inporphyriticvarieties, this mineral occurs as crystals several centimetres in size in addition to matrix plagioclase. From theCambridge English Corpus Andesites are commonlyporphyriticand consist of plagioclase, hornblende, and subordinate amounts of clinopyroxene, quartz and biotite phenocrysts. From theCambridge English Corpus Both are massive andporphyritic, with euhedral phenocrysts (up to 0.12 cm) of zoned olivine (about 20 %), leucite (about 5 %), and phlogopite (about 2-5 %). From theCambridge English Corpus The basalts are generallyporphyritic, and phenocryst assemblages show a gradual change from olivine to olivine-clinopyroxene-oxides and olivine-clinopyroxene-plagioclase. From theCambridge English Corpus It is a very distinctive hypidiomorphic, coarse-grainedporphyriticgranite. 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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