| 单词 | plagioclase |
| 释义 | plagioclase (once / 203782 pages) n WORD FAMILY plagioclase USAGE EXAMPLESBacklit under a microscope, minerals in the slices—including plagioclase, olivine, and pyroxene—burst into focus: polygonal islands swimming in a dark sea of rock. Science Magazine(Nov 17, 2016) Of the felspars the plagioclase separates first and forms well-shaped crystals of which the central parts may be more basic than the outer zones. Various, Encyclopaedia Britannica, 11th Edit...(2011) They consist essentially of plagioclase felspar, with hornblende or augite, and may contain also biotite, quartz and a limited amount of orthoclase. Various, Encyclopaedia Britannica, 11th Edit...(2010) n any of a series of triclinic feldspars that form rocks Syn|Hypo|Hyper oligoclase albite, white feldspar a widely distributed feldspar that forms rocks anorthiterare plagioclastic feldspar occurring in many igneous rocks feldspar, felspar any of a group of hard crystalline minerals that consist of aluminum silicates of potassium or sodium or calcium or barium |
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