A coarse-grained, plutonic or intrusive igneous rock of felsic composition having large crystals of quartz, feldspar and mica.
一种粗粒的，深成的或侵入的长英质成分的火成岩，含石英、长石和云母的粗大晶体。
The zircon samples were fresh and unweathered. The rock is coarse-grained biotite monzogranite.
所测锆石样品新鲜、未风化，岩性为粗粒黑云母二长花岗岩。
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